CN117613543A - Antenna assembly and electronic equipment - Google Patents

Abstract

The application provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiator, a first matching circuit, a first feed source, a second radiator and a second matching circuit; the first radiator comprises a first radiation part, the first radiation part comprises a first end, a second end and a first feed point, and the first end is grounded; the first feed source is electrically connected with the first matching circuit to the first feed point so as to enable excitation signals of a first frequency band supporting satellite communication or a second frequency band supporting cellular communication to the first radiator feed source; the second radiator comprises a third end, a fourth end and a first connecting point, and the third end and the second end form a coupling gap; the second matching circuit comprises a first matching sub-circuit, one end of the first matching sub-circuit is electrically connected with the first connecting point, and the other end of the first matching sub-circuit is grounded, and the first matching sub-circuit comprises a first switch and a first matching branch circuit which are connected in series; when the antenna component works in the first frequency band, the first switch is conducted so as to connect the third end to the ground through the first matching sub-circuit; the first switch is turned off when the antenna assembly is operating in the second frequency band.

Description

Antenna components and electronic equipment

Technical field

The present application relates to the field of communication technology, and in particular to an antenna assembly and electronic equipment.

Background technique

With the development of technology, electronic devices with communication functions such as mobile phones are becoming more and more popular and their functions are becoming more and more powerful. Electronic devices usually include antenna components to implement communication functions of the electronic device. However, when antenna components in electronic devices in the related art communicate with satellites, the energy fed in is often relatively high, which puts greater pressure on components of the antenna components (such as switches), thereby posing a risk of component damage.

Contents of the invention

In a first aspect, this application provides an antenna assembly, which includes:

The first radiator includes a first radiating part, the first radiating part includes a first end, a first feed point and a second end, and the first end is grounded;

first matching circuit;

A first feed source, electrically connecting the first matching circuit to the first feed point, the first feed source being used to feed an excitation signal supporting the first frequency band of satellite communication to the first radiator or Supports the excitation signal of the second frequency band for cellular communications;

The second radiator includes a third end, a first connection point and a fourth end, the third end is opposite to the second end and is spaced apart to form a coupling gap; and

The second matching circuit includes a first matching sub-circuit. One end of the first matching sub-circuit is electrically connected to the first connection point and the other end is grounded. The first matching sub-circuit includes a first switch and a first switch connected in series. matching branch;

When the antenna assembly operates in the first frequency band, the first switch is turned on to ground the third end of the second radiator through the first matching subcircuit; when the antenna When the component operates in the second frequency band, the first switch is turned off.

In a second aspect, an embodiment of the present application provides an electronic device, which includes the antenna assembly as described in the first aspect;

The electronic device has a top and a bottom arranged oppositely, and the first radiator and the second radiator of the antenna assembly are both arranged on the top of the electronic device.

To sum up, in the antenna assembly provided by the embodiment of the present application, since there is a coupling gap between the third end of the second radiator and the second end of the first radiator, the second radiator The energy of the first radiator can be coupled (also referred to as EE coupling) through the electric field of the coupling gap. When the second radiator performs electric field coupling through the coupling gap to couple the energy of the first radiator, part of the energy will be radiated to free space, and part of the energy will be coupled to the second radiator. Therefore, the energy coupled to the second radiator is weakened compared to the energy of the first radiator, thus reducing the voltage withheld by the first switch in the first matching sub-circuit in the second matching circuit. . On the other hand, when the first switch is turned on, the third end of the second radiator is grounded through the first matching sub-circuit in the second matching circuit. Therefore, the second radiation The portion of the body between the first connection point and the fourth end is short-circuited. Since the size between the first connection point and the coupling gap is smaller than the size of the second radiator, the main current when the antenna assembly operates in the first frequency band is basically concentrated in the third On one radiator instead of the second radiator, therefore, the voltage endured by the first switch in the first matching subcircuit will also be reduced. For the reasons described above, when the antenna assembly operates in the first frequency band for communication with satellites, the voltage to which the first switch is subjected is lower, thereby reducing or even eliminating the risk of the first switch being burned out. .

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of an antenna assembly provided by a first embodiment in the related art;

Figure 2 is a schematic structural diagram of the first matching circuit in Figure 1 provided by an embodiment;

Figure 3 is a schematic diagram of the current mode in Mode 1 when the antenna assembly shown in Figure 1 operates in the first frequency band for communication with satellites;

Figure 4 is a schematic diagram of the current mode in mode two when the antenna assembly shown in Figure 1 operates in the first frequency band for communication with satellites;

Figure 5 is a schematic diagram of the current mode in mode three when the antenna assembly shown in Figure 1 operates in the second frequency band for cellular communication;

Figure 6 is a schematic diagram of the current mode in mode four when the antenna assembly shown in Figure 1 operates in the second frequency band for cellular communication;

Figure 7 is a schematic diagram of S11 and efficiency simulation of the antenna assembly shown in Figure 1;

Figure 8 is a pattern of the antenna assembly shown in Figure 1 when operating in the transmitting frequency band of the first frequency band;

Figure 9 is a directional diagram of the antenna assembly shown in Figure 1 when operating in the receiving frequency band of the first frequency band;

Figure 10 is a schematic diagram of an antenna assembly provided by the first embodiment of the present application;

Figure 11 is a schematic diagram of the second matching circuit in Figure 10;

Figure 12 is a schematic diagram of the current mode of the antenna assembly in Figure 10 when operating in the first frequency band;

Figure 13 is a schematic diagram of the current intensity of the antenna assembly in Figure 10 when operating in the first frequency band;

(a) in Figure 14 is a schematic diagram of an antenna assembly provided by another embodiment of the present application;

(b) in Figure 14 is a schematic structural diagram of the second matching circuit in (a) in Figure 14;

Figure 15 is a schematic diagram of current distribution when the antenna component (a) in Figure 14 is operating in the transmitting sub-band of the first frequency band;

Figure 16 is a schematic diagram of current distribution when the antenna component (a) in Figure 14 is operating in the receiving sub-band of the first frequency band;

Figure 17 is a schematic diagram of a second matching circuit provided by an embodiment of the present application;

Figure 18 is a simulation diagram of the voltage changes with frequency of the first switch and the second switch of the antenna assembly in Figure 14;

Figure 19 is a schematic diagram of S11 and efficiency simulation of the antenna assembly shown in Figure 10;

Figure 20 is a pattern of the antenna assembly in Figure 14 when operating in the transmitting sub-band of the first frequency band;

Figure 21 is a pattern of the antenna assembly in Figure 14 when operating in the receiving sub-band of the first frequency band;

Figure 22 is a schematic diagram of current distribution in the second resonance mode of the antenna assembly provided in Figure 10;

Figure 23 is a schematic diagram of current distribution in the third resonance mode of the antenna assembly provided in Figure 10;

Fig. 24 is a schematic diagram of an antenna component with an IFA antenna structure in the related art;

Figure 25 is a directional diagram of the antenna assembly provided in Figure 24;

Figure 26 is a schematic comparison diagram of the simulation diagrams of the antenna components provided in Figure 1 and Figure 14;

Figure 27 is an efficiency simulation diagram of the antenna assembly shown in Figure 1 and Figure 14 operating in the first frequency band;

Figure 28 is a gain table when the antenna assembly shown in Figure 1 operates in the first frequency band;

Figure 29 is a gain table when the antenna assembly shown in Figure 14 operates in the first frequency band;

Figure 30 is a schematic diagram of the distance from the first connection point of the antenna assembly provided in Figure 14 to the coupling gap;

Figure 31 is a schematic diagram of an antenna assembly provided by another embodiment of the present application;

Figure 32 is an equivalent schematic diagram when the fifth terminal of the antenna assembly in Figure 31 is open;

Figure 33 is a schematic diagram of current distribution in the fourth resonance mode of the antenna assembly in Figure 32;

Figure 34 is a schematic diagram of current distribution in the fifth resonance mode of the antenna assembly in Figure 32;

Figure 35 is a schematic diagram of current distribution in the sixth resonance mode of the antenna assembly in Figure 32;

Figure 36 is a partial structural schematic diagram of the antenna assembly shown in Figure 31;

Figure 37 is a schematic diagram of the current mode when the antenna assembly in Figure 31 supports the third frequency band;

Figure 38 is a schematic diagram of an antenna assembly provided by another embodiment of the present application;

Figure 39 is a schematic diagram of an antenna assembly provided by another embodiment of the present application;

Figure 40 is a schematic diagram of the identification of the antenna assembly provided in Figure 10 from another angle;

Figure 41 is a schematic diagram of an electronic device provided by an embodiment of the present application;

Figure 42 is a partial structural schematic diagram of the electronic device shown in Figure 41;

Figure 43 is a circuit block diagram of an electronic device provided by an embodiment of the present application.

Description of main component numbers:

Electronic device 1, antenna assembly 10, middle frame 30, floor 40, processor 50, display screen 70, casing 90;

The first radiator 110, the first feed source S1, the first radiating part 111, the first end 1111, the first feed point P1, the second end 1112, the second radiating part 112, the fifth end 1121, the second connection point P4, ground point G0;

The second radiator 120, the third end 121, the second feed point P2, the first connection point P3, the fourth end 122, the coupling gap 120a, the third radiation part 120b, the fourth radiation part 120c;

second matching circuit M2, first matching sub-circuit 131, first switch 1311, first connection terminal 131a, second connection terminal 131b, first matching branch 1312;

the second matching subcircuit 132, the second switch 1321, the third connection terminal 132a, the fourth connection terminal 132b, the second matching branch 1322;

The third matching circuit M3, the third switch 151, the fifth connection terminal 1511, the sixth connection terminal 1512, and the third matching branch 152;

second feed source S2, third feed source S3, fourth switch 160;

Top 1a, bottom 1b, top edge 11a, side edge 11b, preset section 11c;

The frame body 310, the frame 320, the outer surface 320a, the first slit 320b, the second slit 320c, and the third slit 320d;

Switch SW0, matching sub-circuit 13a, matching sub-circuit 13b, series unit 13c.

Detailed ways

The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described in this application are only some of the embodiments, not all of the embodiments. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the protection scope of this application.

Reference in this application to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they mutually exclusive, independent, or alternative embodiments to other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

The terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example: an assembly or device containing one or more parts is not limited to one or more listed parts, but optionally also includes one or more parts that are not listed but are inherent to the illustrated product. component, or one or more components it should have based on the described function.

An embodiment of the present application provides an antenna assembly 10. Before introducing the antenna assembly 10 provided by the embodiment of the present application, some antenna structures used in the antenna assembly 10 provided by the embodiment of the present application are introduced and comparatively analyzed. These antenna assemblies 10 can be regarded as the antenna assemblies 10 in the related art (not the prior art) before the antenna assembly 10 provided in the embodiment of the present application is improved.

When the antenna assembly 10 in the related art communicates with a satellite, for example, when the antenna assembly 10 operates in the first frequency band for communicating with the satellite, it often feeds higher energy (also known as energy flow). Normally, the RF terminal board-level power can reach 37dBm, which will put great pressure on other antennas or devices. The withstand voltage of the low-voltage switch commonly used in the antenna assembly 10 is usually only 40V, and the withstand voltage of the high-voltage switch is only 80V at the highest. Therefore, how to make the antenna assembly 10 work in the first frequency band for communication with satellites without causing the voltage of the switch to overvoltage is a big problem.

Please refer to Figures 1, 2, 3 and 4. Figure 1 is a schematic diagram of an antenna assembly provided by a first embodiment in the related art; Figure 2 is a structure of the first matching circuit in Figure 1 provided by an embodiment. Schematic diagram; Figure 3 is a schematic diagram of the current mode of mode 1 when the antenna assembly shown in Figure 1 is operating in the first frequency band of communication with satellites; Figure 4 is a schematic diagram of the current mode of mode 1 when the antenna assembly shown in Figure 1 is operating in the first frequency band of communication with satellites. 2. Current mode schematic. In the related art, the antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first feed S1, a second radiator 120, and a second matching circuit M2. The first radiator 110 includes a first end 1111, a first feeding point P1 and a second end 1112. The first end 1111 is grounded. The first feed source S1 is electrically connected to the first matching circuit M1 to the first feed point P1. The first feed S1 is used to support a first frequency band for satellite communication or a second frequency band for cellular communication. The second radiator 120 includes a third end 121 , a first connection point P3 and a fourth end 122 . The third end 121 is opposite to the second end 1112 and is spaced apart to form a coupling gap 120a. The second matching circuit M2 is electrically connected to the first connection point P3.

The first matching circuit M1 includes a switch SW0, and the switch SW0 of the first matching circuit M1 has an on state (on) and an off state (off). When the switch SW0 of the first matching circuit M1 is in the on state, the antenna assembly 10 supports the first frequency band for satellite communication; when the switch SW0 of the first matching circuit M1 is in the off state, the antenna assembly 10 Antenna assembly 10 supports a second frequency band for cellular communications.

The second radiator 120 and the first radiator 110 perform electric field-electric field (EE) coupling through the coupling gap 120a to receive the energy of the first feed source S1. Therefore, the antenna assembly 10 is also called an EE antenna, or an E-E antenna, or an EE antenna, or an EE antenna.

When the antenna assembly 10 supports the first frequency band for communication with satellites (such as but not limited to Tiantong satellite), please refer to Figure 3 and Figure 3 for the current distribution of the first radiator 110 and the second radiator 120 4. For convenience of description, the current mode shown in FIG. 3 is called mode one (also called mode 1) for short; the current mode shown in FIG. 4 is called mode two (also called mode 2). The first mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112 and is accompanied by current from the third end 121 to the fourth end 122 . Specifically, the current from the first terminal 1111 to the second terminal 1112 is marked as I ₀₁ , and the current from the third terminal 121 to the fourth terminal 122 is marked as I ₀₂ , where the current I The flow direction of ₀₂ is the same as the flow direction of current I ₀₁ . In other words, the current of the first radiator 110 is I ₀₁ and the current of the second radiator 120 is I ₀₂ , where the flow direction of the current I ₀₂ is the same as the flow direction of the current I ₀₁ . Judging from the current distribution of mode 1, mode 1 is also called the radiation mode. Mode two includes a quarter-wavelength mode from the first end 1111 to the second end 1112 and is accompanied by current from the third end 121 to the fourth end 122 . Specifically, in mode two, the current from the first terminal 1111 to the second terminal 1112 is marked as I ₀₃ , and the current from the third terminal 121 to the fourth terminal 122 is marked as I ₀₄ , wherein the flow direction of current I ₀₄ is opposite to the flow direction of current I ₀₃ . From the current distribution of mode 2, mode 2 is also called balanced mode. The mode one and the mode two are also called EE dual modes.

Please refer to Figures 5 and 6 together. Figure 5 is a schematic diagram of the current mode in mode three when the antenna assembly shown in Figure 1 is operating in the second frequency band of cellular communication; Figure 6 is a schematic diagram of the antenna assembly shown in Figure 1 operating in the second frequency band of cellular communication. Schematic diagram of the current mode of Mode 4 in the second frequency band of cellular communications. When the antenna assembly 10 supports the second frequency band for cellular communication, please refer to FIG. 5 and FIG. 6 for the current distribution of the first radiator 110 and the second radiator 120 . For convenience of description, the current mode shown in FIG. 5 is called mode three (also called mode 3) for short; the current mode shown in FIG. 4 is called mode four (also called mode 4). Mode three includes a quarter-wavelength mode from the first end 1111 to the second end 1112 and is accompanied by current from the third end 121 to the fourth end 122 . Specifically, the current from the first terminal 1111 to the second terminal 1112 is marked as I ₀₅ , and the current from the third terminal 121 to the fourth terminal 122 is marked as I ₀₆ , where the current I The flow direction of ₀₆ is the same as the flow direction of current I ₀₅ . In other words, the current of the first radiator 110 is I ₀₅ and the current of the second radiator 120 is I ₀₆ , where the flow direction of the current I ₀₆ is the same as the flow direction of the current I ₀₅ . Judging from the current distribution of mode three, mode three is also called the radiation mode. Mode four includes a quarter-wavelength mode from the first end 1111 to the second end 1112 and is accompanied by current from the third end 121 to the fourth end 122 . Specifically, in mode four, the current from the first terminal 1111 to the second terminal 1112 is marked as I ₀₇ , and the current from the third terminal 121 to the fourth terminal 122 is marked as I ₀₈ , wherein the flow direction of current I ₀₈ is opposite to the flow direction of current I ₀₇ . Judging from the current distribution of mode four, mode four is also called the balanced mode. The mode three and the mode four are also called EE dual modes.

In one implementation, the second frequency band includes a first sub-frequency band and a second sub-frequency band. The mode three supports the first sub-frequency band, and the mode four supports the second sub-frequency band. In one implementation, the first sub-frequency band is the B3 frequency band, and the second sub-frequency band is the B41 frequency band.

Please continue to refer to FIG. 2 . The first matching circuit M1 includes a switch SW0 . The switch SW0 of the first matching circuit M1 has an on state (on) and an off state (off). When the switch SW0 of the first matching circuit M1 is in the on state, the antenna assembly 10 supports the first frequency band for satellite communication; when the switch SW0 of the first matching circuit M1 is in the off state, the antenna assembly 10 Antenna assembly 10 supports a second frequency band for cellular communications.

The first radiator 110 is also called a main radiator or a main branch, and the second radiator 120 is also called a parasitic radiator or a parasitic branch. In a related embodiment, the first matching circuit M1 is electrically connected to the first feed point P1. The first matching circuit M1 includes a switch SW0. Therefore, it can also be called a switch SW0 and a main branch power supply. connect.

Specifically, please continue to refer to FIG. 2. In a related embodiment, the first matching circuit M1 includes a matching sub-circuit 13a, a matching sub-circuit 13b and a switch SW0. The first feed source S1 is electrically connected to the first feed point P1 through the matching sub-circuit 13a. The switch SW0 and the matching sub-circuit 13b are connected in series to form a series unit 13c. One end of the series unit 13c is electrically connected to the first feed point P1, and the other end of the series unit 13c is grounded. In the schematic diagram of this embodiment, one end of the switch SW0 serves as the one end of the series unit 13c and is electrically connected to the first feed point P1; the other end of the switch SW0 is electrically connected to the matching One end of the sub-circuit 13b and the other end of the matching sub-circuit 13b serve as the other end of the series unit 13c to be grounded. In other embodiments, one end of the matching sub-circuit 13b serves as the one end of the series unit 13c and is electrically connected to the first feed point P1, and the other end of the matching sub-circuit 13b is electrically connected to the first feeding point P1. One end of the switch SW0 and the other end of the switch SW0 serve as the other end of the series unit 13c to be grounded.

It can be seen from this that in the antenna assembly 10 in the related art, the switch SW0 of the first matching circuit M1 is electrically connected to the first radiator 110 (ie, the main branch). When the switch SW0 is in the off state, the antenna When the component 10 works in the second frequency band of cellular communication, the EE dual-mode covers the first sub-frequency band and the second sub-frequency band of the second frequency band (for example, it can be the B3 frequency band + the B41 frequency band). When the antenna assembly 10 needs to work in the first frequency band for communication with satellites, the switch SW0 is turned on, and the first sub-frequency band supported by mode three of the antenna assembly 10 is switched to the mode one supported by the antenna assembly 10 The first frequency band of satellite communications (such as 2.1GHz).

It can be seen from this that since the antenna assembly 10 operates in the first frequency band for communicating with satellites, the switch SW0 is in a conductive state, and the switch SW0 can be electrically connected to the earth pole. Therefore, the antenna in the related art The switch SW0 of the assembly 10 has no risk of voltage overvoltage. If the switch SW0 is in an off state when the antenna assembly 10 is operating in the first frequency band for communication with satellites, there is a risk of voltage overvoltage in the switch SW0.

Please refer to Figure 7, which is a schematic diagram of S11 and efficiency simulation of the antenna assembly shown in Figure 1. In this diagram, the abscissa is frequency (Frequency) in GHz; the ordinate is in dB. In this schematic diagram, curve ① is the S11 curve when the antenna assembly 10 supports the first frequency band; curve ② is the system radiation efficiency (System Rad.Efficiency) curve when the antenna assembly 10 supports the first frequency band. ; Curve ③ is the system total efficiency (System Tot.Efficiency) curve when the antenna assembly 10 supports the first frequency band. It can be seen from this schematic diagram that the first frequency band supported by the antenna assembly 10 is 2.0GHz ~ 2.2GHz, and has good system radiation efficiency and overall system efficiency. Curve ④ is the S11 curve when the antenna assembly 10 works in the second frequency band; curve ⑤ is the system radiation efficiency (System Rad.Efficiency) curve when the antenna assembly 10 works in the second frequency band; curve ⑥ is the system total efficiency (System Tot.Efficiency) curve when the antenna assembly 10 operates in the second frequency band. It can be seen from this schematic diagram that the second frequency band supported by the antenna assembly 10 includes the B3 frequency band and the B41 frequency band, and has better system radiation efficiency and overall system efficiency.

Please refer to Figures 8 and 9 together. Figure 8 is a directional diagram when the antenna assembly shown in Figure 1 is working in the transmitting frequency band of the first frequency band; Figure 9 is a receiving pattern when the antenna assembly shown in Figure 1 is working in the first frequency band. Frequency band pattern. In FIG. 8 , the antenna assembly 10 of the related art supports the transmit sub-band (Tx) of the first frequency band of 2.0 GHz as an example for simulation. In FIG. 9 , the antenna assembly 10 of the related art works in the receiving sub-band of the first frequency band. (Rx) is 2.2GHz as an example for simulation. It can be seen from the two simulation diagrams of FIG. 8 and FIG. 9 that when the antenna assembly 10 is working in the transmitting sub-band of the first frequency band and the receiving sub-band of the first frequency band, the direction diagrams are all facing up to the right (viewing angle in the diagram).

Next, the antenna assembly 10 provided by the embodiment of the present application will be introduced in detail.

Please refer to Figure 10, Figure 11 and Figure 12 together. Figure 10 is a schematic diagram of the antenna assembly provided by the first embodiment of the present application; Figure 11 is a schematic diagram of the second matching circuit in Figure 10; Figure 12 is a schematic diagram of the antenna in Figure 10 Schematic diagram of the current mode of the component when operating in the first frequency band. The embodiment of the present application provides an antenna assembly 10. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first feed source S1, a second radiator 120 and a second matching circuit M2. The first radiator 110 includes a first radiation part 111 . The first radiation part 111 includes a first end 1111, a first feed point P1 and a second end 1112. The first end 1111 is grounded. The first feed source S1 is electrically connected to the first matching circuit M1 to the first feed point P1, and the first feed source S1 is used to feed into the first radiator 110 a third signal that supports satellite communication. An excitation signal for one frequency band or a second frequency band supporting cellular communications. The second radiator 120 includes a third end 121 , a first connection point P3 and a fourth end 122 . The third end 121 is opposite to the second end 1112 and is spaced apart to form a coupling gap 120 a. The second matching circuit M2 includes a first matching sub-circuit 131. One end of the first matching sub-circuit 131 is electrically connected to the first connection point P3, and the other end is grounded. The first matching sub-circuit 131 includes a first switch 1311 and a first matching branch 1312 connected in series. When the antenna assembly 10 operates in the first frequency band, the first switch 1311 is turned on to ground the third end 121 of the second radiator 120 through the first matching subcircuit 131 . When the antenna assembly 10 operates in the second frequency band, the first switch 1311 is turned off.

The first radiator 110 may be a Laser Direct Structuring (LDS) radiator, a Flexible Printed Circuit (FPC) radiator, or a Print Direct Structuring (PDS) radiator. Or a metal branch radiator. When the antenna assembly 10 is applied to an electronic device 1 (see FIGS. 41 to 43 ), the first radiator 110 may be a structural antenna (Mechanical Design Antenna, MDA) designed using the electronic device 1 itself to be embedded with metal. ) radiator. For example, the first radiator 110 may be an antenna radiator designed using the middle frame 30 of the electronic device 1 made of plastic and metal. In addition, the first radiator 110 may also be a metal frame antenna radiator designed with the metal middle frame 30 .

It can be understood that this application does not specifically limit the shape, structure and material of the first radiator 110. The shapes of the first radiator 110 include but are not limited to bent shape, straight shape, L shape, sheet shape, Rods, coatings, films, etc. When the first radiator 110 is in the shape of a strip, the present application does not limit the extension trajectory of the first radiator 110. Therefore, the first radiator 110 can extend in a straight line, a curve, or a multi-stage bending trajectory. The above-mentioned first radiator 110 may be a line with uniform width on the extension track, or may be an irregular shape with varying widths such as gradual width or widened areas. In the schematic diagram of this embodiment, the first radiator 110 extends along a straight trajectory. It can be understood that the first radiator 110 shown in the schematic diagram of this embodiment should not be understood as a reference to the third radiator provided by the embodiment of the present application. A radiator 110 is defined.

In one embodiment, the first end 1111 can be connected to the floor 40 (also known as the ground pole, or system ground, or system ground) electrical connection to ground. When the antenna assembly 10 is used in an electronic device 1, the ground electrode may be, but is not limited to, the frame body 310 of the middle frame 30 in the electronic device 1 (see Figures 41 to 43), or a circuit board. The ground, or the shield of the display screen 70, or the conductive battery cover, etc. In another embodiment, when the antenna assembly 10 is applied to an electronic device 1 and the first radiator 110 is an MDA radiator or a metal frame antenna radiator, the situation in which the first end 1111 is grounded is described in detail. as follows. The electronic device 1 includes a middle frame 30 . The middle frame 30 includes a frame body 310 and a frame 320 . The frame body 310 can serve as a ground pole, and the frame 320 is surrounding the periphery of the frame body 310 and connected to the frame body 310 . The first radiator 110 is formed on the frame 320 , and the first end 1111 of the first radiator 110 is connected to the frame body 310 to be grounded.

In this embodiment, the first radiator 110 and the second radiator 120 are both disposed on the top of the floor 40 of the electronic device 1 to which the antenna assembly 10 is applied.

The first feed source S1 and the first matching circuit M1 may be located on a circuit board. The first feed S1 is used to generate a first excitation signal. The first excitation signal is used to excite the first radiator 110 and the second radiator 120 to support a first frequency band for satellite communication. In one embodiment, the frequency range of the first frequency band may be, but is not limited to, 2.0 GHz to 2.2 GHz. The first feed S1 is also used to generate a second excitation signal. The second excitation signal is used to excite the first radiator 110 and the second radiator 120 to support the second frequency band of cellular communication. The first feed source S1 is electrically connected to the first feed point P1 by, but is not limited to, a conductive elastic piece, a conductive connecting rib (such as a metal connecting rib), or a thimble connector (POP-pin). The conductive member is connected to the first feed point P1.

The second radiator 120 may be a Laser Direct Structuring (LDS) radiator, a Flexible Printed Circuit (FPC) radiator, or a Print Direct Structuring (PDS) radiator. Or a metal branch radiator. When the antenna assembly 10 is applied to the electronic device 1 , the second radiator 120 may be a structural component antenna (Mechanical Design Antenna, MDA) radiator designed using the electronic device 1 itself to be embedded with metal. For example, the second radiator 120 can be an antenna radiator designed using the middle frame 30 of the electronic device 1 made of plastic and metal. In addition, the second radiator 120 may also be a metal frame antenna radiator designed with the metal middle frame 30 .

It can be understood that this application does not specifically limit the shape, structure and material of the second radiator 120. The shapes of the second radiator 120 include but are not limited to bent shape, straight shape, L shape, sheet shape, Rods, coatings, films, etc. When the second radiator 120 is in a strip shape, the present application does not limit the extension trajectory of the second radiator 120. Therefore, the second radiator 120 can extend in a straight line, a curve, a multi-stage bend, etc. The above-mentioned second radiator 120 may be a line with uniform width on the extension track, or may be an irregular shape with varying widths such as gradual width or widened areas. In the schematic diagram of this embodiment, the second radiator 120 includes two bent and connected parts as an example. It can be understood that the second radiator 120 shown in the schematic diagram of this embodiment should not be understood as Limitations on the second radiator 120 provided by the embodiment of the present application.

The third end 121 is opposite to the second end 1112 and is spaced apart to form a coupling gap 120a. The second radiator 120 can be coupled to the first radiator 110 through the coupling gap 120a.

In this embodiment, the first radiator 110 is also called a main radiator or a main branch. The second radiator 120 is also called a parasitic radiator or a parasitic node.

The second matching circuit M2 may be located on a circuit board, and one end of the second matching circuit M2 may be connected to the second matching circuit M2 through a conductive elastic piece, a conductive connecting rib (such as a metal connecting rib), or a thimble connector (POP-pin). Describe the third end 121. The second matching circuit M2 can be connected to the ground via a conductive elastic piece, a conductive connecting rib (such as a metal connecting rib), or a thimble connector (POP-pin).

The fourth end 122 can be electrically grounded by, but is not limited to, a conductive elastic piece, a conductive connecting rib (such as a metal connecting rib), or a thimble connector (POP-pin) connected to the ground.

In this embodiment, one end of the first matching branch 1312 serves as the one end of the first matching sub-circuit 131 and is electrically connected to the first connection point P3, and the other end of the first matching branch 1312 One end is electrically connected to one end of the first switch 1311; the other end of the first switch 1311 serves as the other end of the first matching sub-circuit 131 and is electrically grounded.

It can be understood that in other embodiments, one end of the first switch 1311 serves as the one end of the first matching sub-circuit 131 and is electrically connected to the first connection point P3, and the other end of the first switch 1311 is electrically connected to the first connection point P3. One end is connected to one end of the first matching branch 1312; the other end of the first matching branch 1312 is used as the other end of the first matching sub-circuit 131 to be grounded.

When the first switch 1311 is turned on, one end of the first switch 1311 is electrically connected to the other end of the first switch 1311 . Therefore, the third end of the second radiator 120 121 is connected to ground through the first matching sub-circuit 131 .

Specifically, please refer to Figure 11. The first switch 1311 includes a first connection terminal 131a and a second connection terminal 131b. The first connection end 131a is electrically connected to the first matching branch 1312 and the first connection point P3, and the second connection end 131b is electrically connected to the ground (floor 40 in this embodiment), When the first connection terminal 131a and the second connection terminal 131b are electrically connected, the first switch 1311 is turned on.

When the first connection terminal 131a is electrically connected to the second connection terminal 131b, the first switch 1311 is turned on, and the first connection point P3 of the second radiator 120 can pass through the first matching element. The first switch 1311 in the circuit 131 is electrically connected to ground. When the first connection terminal 131a and the second connection terminal 131b are electrically disconnected, the first switch 1311 is turned off, and there is no connection between the first connection point P3 of the second radiator 120 and the ground. The first matching sub-circuit 131 is connected to ground.

In this embodiment, the structure of the first switch 1311 is simple and easy to implement, so that when the antenna assembly 10 supports the first frequency band, the first switch 1311 is controlled so that the first switch 1311 is controlled. The switch 1311 is turned on to connect the third end 121 of the second radiator 120 to ground through the first matching sub-circuit 131 .

In one embodiment, the first matching branch 1312 includes a short-circuit line; or an inductor, wherein the inductance value of the inductor is less than or equal to 5 nH.

In this embodiment, when the first matching branch 1312 includes an inductor, the inductance value of the inductor is small. Generally speaking, the inductance value of the inductor is less than or equal to 5nH. Regardless of whether the first matching branch 1312 includes a short line or an inductor with an inductance value less than or equal to 5nH, the impedance value of the first matching branch 1312 is small. When the first switch 1311 is turned on, the antenna The component 10 supports the first frequency band with less loss.

To sum up, the antenna assembly 10 provided by the embodiment of the present application has a coupling gap 120a between the third end 121 of the second radiator 120 and the second end 1112 of the first radiator 110. Therefore, The second radiator 120 may couple (also referred to as EE coupling) the energy of the first radiator 110 through the electric field of the coupling gap 120a. When the second radiator 120 performs electric field coupling through the coupling gap 120 a to couple the energy of the first radiator 110 , part of the energy will be radiated to free space, and part of the energy will be coupled to the second radiator 120 . Therefore, the energy coupled to the second radiator 120 is attenuated compared to the energy of the first radiator 110 . Therefore, the first switch in the first matching sub-circuit 131 in the second matching circuit M2 will be reduced. The voltage that 1311 withstands. On the other hand, when the first switch 1311 is turned on, the third end 121 of the second radiator 120 is grounded through the first matching sub-circuit 131 in the second matching circuit M2, therefore, The portion of the second radiator 120 between the first connection point P3 and the fourth end 122 is short-circuited. Since the size between the first connection point P3 and the coupling gap 120a is smaller than the size of the second radiator 120, the main current when the antenna assembly 10 supports the first frequency band is basically concentrated in The first radiator 110 is on the first radiator 110 instead of the second radiator 120 . Therefore, the voltage endured by the first switch 1311 in the first matching sub-circuit 131 will also be reduced. Based on the two reasons described above, when the antenna assembly 10 operates in the first frequency band for satellite communication, the voltage to which the first switch 1311 is subjected is lower, thereby reducing or even eliminating the first switch 1311 Risk of burnout.

Please continue to refer to FIG. 12. When the antenna assembly 10 supports the first frequency band, the antenna assembly 10 has a first resonance mode. The first resonance mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112, and is formed from the third end 121 to the first connection point P3 with the first connection point P3. The current flows from terminal 1111 to the second terminal 1112 in the same direction.

In this embodiment, the current corresponding to the quarter-wavelength mode from the first end 1111 to the second end 1112 is marked as current I ₁₁ , and the current from the third end 121 to the first connection point P3 The current is marked as current I ₁₂ , and it can be seen that the current I ₁₂ and the current I ₁₁ flow in the same direction. It can be seen from the distribution of current on the first radiator 110 and the second radiator 120 that the first resonance mode is also called a radiation mode.

It should be noted that in the schematic diagram of this embodiment, any current flow direction is taken as an example of the current flow direction of the antenna assembly 10 in the current half-wavelength period. It can be understood that in the following During one half-wavelength period, the current flow direction on the first radiator 110 will be reversed, and the current flow direction on the second radiator 120 will also be reversed. For example, in the current half-wavelength period, the current I ₁₁ flows from the first terminal 1111 to the second terminal 1112, and the current I ₁₂ flows from the third terminal 121 to the first connection. Point P3; in the next half-wavelength period, the current distribution of the antenna assembly 10 is: flowing from the first connection point P3 to the third end 121, and flowing from the second end 1112 to the first end 1111.

It should be noted that the wavelength in "the first resonance mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112" refers to the third wavelength mode supported by the first resonance mode. The wavelength corresponding to the center frequency point of a frequency band.

The quarter-wavelength mode is also called the fundamental mode. When the antenna assembly 10 supports the first frequency band, it has the first resonance mode. The first resonance mode includes the fundamental mode of the first radiator 110. Therefore, , the antenna assembly 10 has higher efficiency when supporting the first frequency band.

Please refer to Figure 13. Figure 13 is a schematic diagram of the current intensity of the antenna assembly in Figure 10 when it operates in the first frequency band. The first resonance mode generates a first resonance current and a second resonance current. Wherein, the first resonant current is distributed from the first end 1111 to the second end 1112. The second resonant current is distributed from the third terminal 121 to the first connection point P3 and goes to ground from the first matching sub-circuit 131 . Wherein, the current intensity J1 of the first resonant current and the current intensity J2 of the second resonant current satisfy: J2<J1.

As can be seen from the previous introduction, the current intensity of the first resonant current I ₁₁ is J1, and the current intensity of the second resonant current I ₁₂ is J2. Since J2<J1, the first resonance current I ₁₁ is marked as a solid line, and the second resonance current I ₁₂ is marked as a dotted line.

In the antenna assembly 10 provided by the embodiment of the present application, since there is a coupling gap 120a between the third end 121 of the second radiator 120 and the second end 1112 of the first radiator 110, the second radiation The body 120 can couple (also referred to as EE coupling) the energy of the first radiator 110 through the electric field of the coupling gap 120a. When the second radiator 120 performs electric field coupling through the coupling gap 120 a to couple the energy of the first radiator 110 , part of the energy will be radiated to free space, and part of the energy will be coupled to the second radiator 120 . Therefore, the energy coupled to the second radiator 120 is weakened compared to the energy of the first radiator 110 , that is, J2 < J1 , therefore, the first switch in the first matching sub-circuit 131 will be reduced. The voltage that 1311 withstands. Therefore, when the antenna assembly 10 operates in the first frequency band for communication with satellites, the voltage to which the first switch 1311 is subjected is lower, thereby reducing or even eliminating the risk of the first switch 1311 being burned out.

Please refer to Figure 14, Figure 15 and Figure 16. Figure 14 (a) is a schematic diagram of an antenna component provided by another embodiment of the present application; Figure 14 (b) is the second matching circuit in Figure 14 (a) Structural diagram; Figure 15 is a schematic diagram of current distribution when the antenna component (a) in Figure 14 is working in the transmitting sub-band of the first frequency band; Figure 16 is a schematic diagram of the antenna component in Figure 14 (a) working in the receiving sub-band of the first frequency band. Schematic diagram of current distribution at frequency range. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first feed source S1, a second radiator 120 and a second matching circuit M2. The first radiator 110 includes a first radiation part 111 . The first radiation part 111 includes a first end 1111, a first feed point P1 and a second end 1112. The first end 1111 is grounded. The first feed source S1 is electrically connected to the first matching circuit M1 to the first feed point P1. The first feed source S1 is used to support the first frequency band of satellite communication or the second frequency band of cellular communication. . The second radiator 120 includes a third end 121 , a first connection point P3 and a fourth end 122 . The third end 121 is opposite to the second end 1112 and is spaced apart to form a coupling gap 120 a. The second matching circuit M2 includes a first matching sub-circuit 131. One end of the first matching sub-circuit 131 is electrically connected to the first connection point P3, and the other end is grounded. The first matching sub-circuit 131 includes a first switch 1311 and a first matching branch 1312 connected in series. When the antenna assembly 10 supports the first frequency band, the first switch 1311 is turned on to ground the third end 121 of the second radiator 120 through the first matching subcircuit 131 .

Please refer to the previous descriptions of the first radiator 110, the second radiator 120, the first matching circuit M1, the second matching circuit M2, etc., and will not be described again.

In addition, the first frequency band includes a transmitting sub-frequency band and a receiving sub-frequency band. Please refer to (a) and (b) in FIG. 14 together. The second matching circuit M2 also includes a second matching sub-circuit 132 . One end of the second matching sub-circuit 132 is electrically connected to the first connection point P3, and the other end is grounded. The second matching sub-circuit 132 includes a second switch 1321 and a second matching branch 1322 connected in series. When the antenna assembly 10 works in the transmitting sub-band of the first frequency band, the first switch 1311 is turned on and the second switch 1321 is turned off; when the antenna assembly 10 supports the transmitting sub-band of the first frequency band, In the receiving sub-frequency band, when the first switch 1311 is turned on and the second switch 1321 is turned on.

The center frequency point of the transmitting sub-band of the first frequency band is smaller than the center frequency point of the receiving sub-band of the first frequency band. For example, when the first frequency band ranges from 2.0GHz to 2.2GHz, the center frequency point of the transmitting sub-band of the first frequency band may be 2.0GHz, and the receiving sub-band (Rx) of the first frequency band Can be 2.2GHz.

In this embodiment, the second matching sub-circuit 132 is connected in parallel with the first matching sub-circuit 131 . Referring to FIG. 15 , when the first switch 1311 is turned on and the second switch 1321 is turned off, the current when the antenna assembly 10 supports the transmitting sub-band of the first frequency band passes through the second radiator. The first connection point P3 of 120 is connected to the ground of the first matching sub-circuit 131 . Referring to FIG. 16 , when the first switch 1311 is turned on and the second switch 1321 is turned on, part of the current when the antenna assembly 10 supports the receiving sub-band of the first frequency band passes through the second radiation. The first connection point P3 of the body 120 is connected to the ground of the first matching sub-circuit 131; the other part of the current is connected to the ground of the second matching sub-circuit 132 via the first connection point P3 of the second radiator 120.

It can be seen from this that the second matching circuit M2 includes a first matching sub-circuit 131 and a second matching sub-circuit 132. By controlling the first switch 1311 in the first matching sub-circuit 131 and controlling the second The second switch 1321 in the matching sub-circuit 132 can realize that the antenna assembly 10 supports the transmitting sub-band and the receiving sub-band of the first frequency band, and can operate in the transmitting sub-band and the receiving sub-band of the first frequency band. Switch between frequency bands. It can be seen that the antenna assembly 10 provided by the embodiment of the present application can implement the transmitting sub-band and the receiving sub-band of the first frequency band for communication with satellites.

In addition, the antenna assembly 10 provided in the embodiment of the present application has a coupling gap 120a between the third end 121 of the second radiator 120 and the second end 1112 of the first radiator 110. Therefore, the third end 121 of the second radiator 120 has a coupling gap 120a. The two radiators 120 can couple (also referred to as EE coupling) the energy of the first radiator 110 through the electric field of the coupling gap 120a. When the second radiator 120 performs electric field coupling through the coupling gap 120 a to couple the energy of the first radiator 110 , part of the energy will be radiated to free space, and part of the energy will be coupled to the second radiator 120 . Therefore, the energy coupled to the second radiator 120 is weakened compared to the energy of the first radiator 110 , therefore, the first switch 1311 and the second switch 1311 in the first matching sub-circuit 131 will be reduced. Match the voltage endured by the second switch 1321 in the sub-circuit 132 . On the other hand, when the first switch 1311 of the first matching sub-circuit 131 in the second matching circuit M2 is turned on, the third end 121 of the second radiator 120 passes through the first matching sub-circuit. 131 is grounded, therefore, the portion of the second radiator 120 between the first connection point P3 and the fourth end 122 is short-circuited. Since the size between the first connection point P3 and the coupling gap 120a is smaller than the size of the second radiator 120, the main current when the antenna assembly 10 supports the first frequency band is basically concentrated in The first radiator 110 is on the first radiator 110 instead of the second radiator 120 . Therefore, the voltage endured by the first switch 1311 in the first matching sub-circuit 131 will also be reduced. In addition, when the second switch 1321 of the second matching sub-circuit 132 in the second matching circuit M2 is turned on, the third end 121 of the second radiator 120 also passes through the second matching sub-circuit. 132 is grounded, therefore, the portion of the second radiator 120 between the first connection point P3 and the fourth end 122 is short-circuited. Since the size between the first connection point P3 and the coupling gap 120a is smaller than the size of the second radiator 120, the main current when the antenna assembly 10 supports the first frequency band is basically concentrated in The first radiator 110 is located on the first radiator 110 instead of the second radiator 120 . Therefore, the voltage endured by the second switch 1321 in the second matching sub-circuit 132 will also be reduced. In addition, when the first switch 1311 of the first matching sub-circuit 131 in the second matching circuit M2 is turned on, and when the second switch 1321 of the second matching sub-circuit 132 in the second matching circuit M2 is turned on, At this time, the third terminal 121 can be electrically connected to the ground through the two paths of the first matching sub-circuit 131 and the second matching sub-circuit 132 . Compared with a path from the third terminal 121 to the ground (for example, only the first matching sub-circuit 131 is turned on), the current from the third terminal 121 to the ground is divided into the first matching sub-circuit. 131 and the second matching sub-circuit 132, the voltage endured by the switches on each path will be further reduced, thereby further reducing the risk of the first switch 1311 and the second switch 1321 being burned out. . In addition, compared with a path from the third terminal 121 to the ground, the current from the third terminal 121 to the ground is divided into the first matching sub-circuit 131 and the second matching sub-circuit 132. The loss of two paths is lower, and the loss is about one-half or one-half of that of a single path.

Please refer to FIG. 17 , which is a schematic diagram of a second matching circuit provided by an embodiment of the present application. The second switch 1321 includes a third connection terminal 132a and a fourth connection terminal 132b. The third connection terminal 132a is electrically connected to the second matching branch 1322 to the first connection point P3, and the fourth connection terminal 132b is electrically connected to the ground (in this case, the floor 40). When the third connection terminal 132a and the fourth connection terminal 132b are electrically connected, the second switch 1321 is turned on; when the third connection terminal 132a and the fourth connection terminal 132b are electrically disconnected , the second switch 1321 is turned off.

When the third connection terminal 132a and the fourth connection terminal 132b are electrically connected, the second switch 1321 is turned on, and the first connection point P3 of the second radiator 120 can pass through the second matching element. The second switch 1321 in circuit 132 is electrically connected to ground. When the third connection terminal 132a and the fourth connection terminal 132b are electrically disconnected, the second switch 1321 is turned off, and the first connection point P3 of the second radiator 120 is connected to the ground. cannot be grounded through the second matching sub-circuit 132. In this embodiment, the second switch 1321 has a simple structure and is easy to implement.

Further, in one embodiment, the second matching branch 1322 includes a short-circuit line; or an inductor, wherein the inductance value of the inductor is less than or equal to 5 nH.

In this embodiment, when the second matching branch 1322 includes an inductor, the inductance value of the inductor is small. Generally speaking, the inductance value of the inductor is less than or equal to 5nH. Regardless of whether the second matching branch 1322 includes a short circuit or an inductor with an inductance value less than or equal to 5nH, the impedance value of the second matching branch 1322 is small. When the second switch 1321 is turned on, the antenna The component 10 supports the first frequency band with less loss.

The performance of the antenna assembly 10 provided in the embodiment of the present application will be simulated and explained below with reference to simulation diagrams.

Please refer to FIG. 18 . FIG. 18 is a simulation diagram of the voltage changes with frequency of the first switch and the second switch of the antenna assembly in FIG. 14 . In this simulation diagram, the abscissa is frequency (Frequency), the unit is GHz; the ordinate is voltage, the unit is voltage (Voltage), the unit is V. It can be seen from this simulation diagram that the voltage the antenna assembly 10 withstands in the first frequency band (2.0GHz ~ 2.2GHz) is less than 40V. Therefore, when neither the first switch 1311 nor the second switch 1321 exceeds Risk of burnout due to pressure.

Please refer to Figure 19, which is a schematic diagram of S11 and efficiency simulation of the antenna assembly shown in Figure 10. In this diagram, the abscissa is frequency (Frequency) in GHz; the ordinate is in dB. In this schematic diagram, curve ① is the S-parameter curve of the transmitting sub-band (Tx) of the first frequency band; curve ② is the system radiation efficiency (System) when the antenna assembly 10 supports the transmitting sub-band of the first frequency band. Rad.Efficiency) curve; curve ③ is the system total efficiency (System Tot.Efficiency) curve when the antenna assembly 10 supports the transmitting sub-band of the first frequency band.

It can be seen from the curves ①, ②, and ③ that the antenna assembly 10 has relatively good system radiation efficiency and total system efficiency when operating in the transmitting sub-band of the first frequency band.

Curve ④ is the S parameter curve of the receiving sub-band (Tx) of the first frequency band; curve ⑤ is the system radiation efficiency (System Rad.Efficiency) curve when the antenna assembly 10 supports the receiving sub-band of the first frequency band. ; Curve ⑥ is the system total efficiency (SystemTot.Efficiency) curve when the antenna assembly 10 supports the receiving sub-band of the first frequency band.

It can be seen from the curves ④, ⑤, and ⑥ that the antenna assembly 10 has relatively good system radiation efficiency and total system efficiency when working in the receiving sub-band of the first frequency band.

Curve ⑦ is the S parameter curve of the second frequency band; curve ⑧ is the system radiation efficiency (System Rad.Efficiency) curve when the receiving sub-band of the second frequency band is supported by the antenna assembly 10; curve ⑨ is the antenna assembly The system total efficiency (System Tot.Efficiency) curve of the second frequency band supported by 10.

It can be seen from the curves ⑦, ⑧, and ⑨ that the antenna assembly 10 has relatively good system radiation efficiency and total system efficiency when supporting the second frequency band.

Please refer to Figures 20 and 21. Figure 20 is a pattern when the antenna assembly in Figure 14 is operating in the transmitting sub-band of the first frequency band; Figure 21 is a diagram when the antenna assembly in Figure 14 is operating in the receiving sub-band of the first frequency band. direction diagram. It can be seen from Figures 20 and 21 that when the antenna assembly 10 supports the transmitting sub-band and the receiving sub-band of the first frequency band of satellite communication, it has good pattern directivity and a high upper hemisphere ratio. Therefore, the antenna assembly 10 provided in the embodiment of the present application has a better communication effect when using the transmitting sub-band and the receiving sub-band of the first frequency band to communicate with satellites.

When the antenna assembly 10 operates in the second frequency band, the second matching circuit M2 disconnects the electrical connection with the ground (here, the floor 40 ).

When the antenna assembly 10 operates in the second frequency band, the second matching circuit M2 disconnects the electrical connection with the ground, so that when the antenna assembly 10 operates in the second frequency band, it can not only utilize all In addition to the first radiator 110, the second radiator 120 can also be used. The antenna assembly 10 provided in the embodiment of the present application can utilize the electrical connection relationship between the second matching circuit M2 and the ground to support more frequency bands (that is, in addition to operating in the first frequency band, it also supports the second frequency band), and can This enables the antenna assembly 10 to have better communication performance.

When the second matching circuit M2 includes the first matching sub-circuit 131 and does not include the second matching sub-circuit 132, the second matching circuit M2 disconnects the electrical connection with the ground, including: the first matching circuit The first switch 1311 of the sub-circuit 131 disconnects the electrical connection with the ground; in other words, the first switch 1311 of the first matching sub-circuit 131 is in a disconnected state.

When the second matching circuit M2 includes the first matching sub-circuit 131 and includes the second matching sub-circuit 132, the second matching circuit M2 disconnects the electrical connection with the ground, including: the first matching sub-circuit 131 and the second matching sub-circuit 132. The first switch 1311 of the circuit 131 disconnects the electrical connection with the ground, and the second matching sub-circuit 132 disconnects the electrical connection with the ground; in other words, the first matching sub-circuit 131 disconnects the electrical connection with the ground. The switch 1311 is in an off state, and the second switch 1321 of the first matching sub-circuit 131 is in an off state.

The second frequency band includes a first sub-frequency band and a second sub-frequency band. The antenna assembly 10 has a second resonance mode and three resonance modes, wherein the second resonance mode supports the first sub-frequency band, and the second resonance mode supports the second sub-frequency band.

When the antenna assembly 10 supports the second frequency band of cellular communication, the second frequency band includes a first sub-frequency band and a second sub-frequency band. Therefore, the antenna assembly 10 has a better communication effect when working in the second frequency band. .

Please refer to FIGS. 22 and 23 . FIG. 22 is a schematic diagram of current distribution in the second resonance mode of the antenna component provided in FIG. 10 . FIG. 23 is a schematic diagram of current distribution in the third resonance mode of the antenna component provided in FIG. 10 . The second resonant mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112, and is formed between the third end 121 and the fourth end 122 with the first end. 1111 to the second terminal 1112 the same current flows. The third resonance mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112, and is formed between the third end 121 to the fourth end 122 and the first end. 1111 The current flowing to the second terminal 1112 is in the opposite direction.

As can be seen from FIG. 22 , the second resonance mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112 , and is accompanied by current from the third end 121 to the fourth end 122 . Specifically, the current from the first terminal 1111 to the second terminal 1112 is labeled I ₁₃ , and the current from the third terminal 121 to the fourth terminal 122 is labeled I ₁₄ , where the current I The flow direction of ₁₄ is the same as the flow direction of current I ₁₃ . In other words, the current of the first radiator 110 is I ₁₃ and the current of the second radiator 120 is I ₁₄ , where the flow direction of the current I ₁₄ is the same as the flow direction of the current I ₁₃ . Judging from the current distribution of the second resonance mode, the second resonance mode is also called the radiation mode.

As can be seen from FIG. 23 , the third resonance mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112 , and is accompanied by current from the third end 121 to the fourth end 122 . Specifically, in the third resonance mode, the current from the first terminal 1111 to the second terminal 1112 is marked as I ₁₅ , and the current from the third terminal 121 to the fourth terminal 122 is marked as I ₁₆ , where the flow direction of current I ₁₆ is opposite to the flow direction of current I ₁₅ . In other words, the current of the first radiator 110 is I ₁₅ and the current of the second radiator 120 is I ₁₆ , where the current I ₁₆ and the current I ₁₅ have opposite directions. Judging from the current distribution of the third resonance mode, the third resonance mode is also called the equilibrium mode. The second resonance mode and the third resonance mode are also called EE dual modes.

In one implementation, the second frequency band includes a first sub-frequency band and a second sub-frequency band. Wherein, the second resonance mode supports the first sub-frequency band, and the third resonance mode supports the second sub-frequency band. In one implementation, the first sub-frequency band is the B3 frequency band, and the second sub-frequency band is the B41 frequency band.

In the antenna assembly 10 provided in this embodiment, the first sub-frequency band is the B3 frequency band, and the second sub-frequency band is the B41 frequency band, which can meet the communication requirements of the B3 frequency band and the B41 frequency band of the antenna assembly 10 during cellular communication.

Next, the performance of the antenna assembly 10 provided by the embodiment of the present application compared with the antenna assembly 10 provided by the related technology introduced previously will be analyzed and described.

In the antenna assembly 10 provided by the related art, the first matching circuit M1 electrically connected to the first radiator 110 includes a switch, and the switch is used to switch the frequency band supported by the antenna assembly 10 . In the antenna assembly 10 provided in the embodiment of the present application, the second matching circuit M2 electrically connected to the second radiator 120 includes a switch (ie, the first switch 1311, or the first switch 1311 and the second switch 1321), using The switch in the second matching circuit M2 switches the frequency band supported by the antenna assembly 10 .

In the antenna assembly 10 provided by the related art and the antenna assembly 10 provided by the embodiment of the present application, the modes when supporting the second frequency band of cellular communication are the same. When the second frequency band includes the B1 frequency band + the B41 frequency band, the antenna assembly 10 provided by the related art and the antenna assembly 10 provided by the embodiment of the present application support the same mode of the B1 frequency band + the B41 frequency band.

The difference lies in that the current path when supporting the first frequency band of satellite communication is different in the antenna assembly 10 provided by the related art and the antenna assembly 10 provided by the embodiment of the present application.

Specifically, in the antenna component 10 provided by the related art, the current is distributed between the first end 1111 to the second end 1112, and the third end 121 to the fourth end 122. That is, the current is distributed between the first radiator 110 and the second end. on the radiator 120. Generally, in the antenna assembly 10 of the related art, the lengths of the first radiator 110 (also called the main stub) and the second radiator 120 (also called the parasitic stub) are equal or relatively close. Therefore, in the antenna assembly 10 of the related art, the current of the first radiator 110 and the current of the second radiator 120 are relatively close.

In the antenna assembly 10 provided in this embodiment, as can be seen from the previous introduction, when the antenna assembly 10 supports the first frequency band for satellite communication, the current is mainly concentrated on the first radiator 110, which can further reduce or even eliminate all the current. The risk of the switch in the second matching circuit M2 being burned out.

In the antenna assembly 10 provided in the embodiment of the present application, the first radiator 110 is an inverted-F antenna (Inverted-FAntenna, IFA) radiator. The second radiator 120 includes two radiating parts that are bent and connected, that is, the shape is similar to an L shape. Therefore, the second radiator 120 is also called an L radiator, or an L branch. The antenna assembly 10 provided by the embodiment of the present application is equivalent to adding a second radiator 120 as a parasitic branch on the basis of the IFA radiator.

Please refer to FIG. 24 , which is a schematic diagram of an antenna component having an IFA antenna structure in the related art. The antenna component 10 includes a radiator 170, a matching circuit M0 and a feed source S0. The radiator 170 includes a first end 171 , a feed point P0 and a second end 172 . The first end 171 is grounded, and the second end 172 is a free end. The feed source S0 electrically connects the matching circuit M0 to the feed point P0. In this schematic diagram, for example, the radiator 170 is disposed on the top of the floor 40 of the electronic device 1 to which the antenna assembly 10 is applied.

Please refer to Figure 25, which is a directional diagram of the antenna assembly provided in Figure 24. The radiation of the IFA antenna mainly depends on the radiation of the floor 40 (such as the main ground of the PCB circuit board), and radiates along the floor 40. The pattern moves from the phase leading direction to the phase lagging direction. When the IFA antenna is located on the upper part of the floor 40, so The lower part of the floor 40 is a phase-lag position. Therefore, when the antenna assembly 10 supports the second preset frequency band, the pattern points downward.

The switch provided by the previous related art is located in the antenna component 10 of the first matching circuit M1, which is equivalent to adding an L-shaped second radiator 120 as a parasitic branch based on the IFA antenna provided in Figure 24. The second radiator 120 of the antenna assembly 10 in the related art causes the pattern to have a downward component. Please refer to FIG. 26 for details. FIG. 26 is a schematic comparison diagram of the simulation diagrams of the antenna components provided in FIG. 1 and FIG. 14 . Among them, (a) of Figure 26 is a pattern of the transmission sub-band of the first frequency band in which the antenna assembly 10 in Figure 1 supports communication with satellites; (a') in Figure 26 is a diagram where the antenna assembly 10 in Figure 14 supports communications with satellites. The pattern of the transmitting sub-band of the first frequency band of communication; Figure 26 (b) is the pattern of the receiving sub-band of the first frequency band of the antenna assembly 10 in Figure 1 that supports communication with satellites; Figure 26 (b') is a directional diagram of the receiving sub-band of the first frequency band in which the antenna assembly 10 in FIG. 14 supports communication with satellites; FIG. 26(c) is a schematic diagram of the current distribution of the first frequency band in which the antenna assembly 10 in FIG. 1 supports communication with satellites. ; Figure 26 (c') is a schematic diagram of current distribution in the first frequency band in which the antenna assembly 10 in Figure 14 supports communication with satellites. It can be seen from the simulation diagram that the proportion of the upper hemisphere when the antenna assembly 10 provided by the embodiment of the present application supports the first frequency band for satellite communication is significantly higher than that of the antenna assembly 10 provided by the related technology when it supports the first frequency band for satellite communication. Hemisphere share.

Please refer to Figure 27, which is an efficiency simulation diagram of the antenna assembly shown in Figure 1 and Figure 14 operating in the first frequency band. In this diagram, the abscissa is frequency (Frequency) in GHz; the ordinate is in dB. In this schematic diagram, curve ① is the S11 curve when the antenna assembly 10 provided in Figure 14 (that is, the antenna assembly 10 provided in the embodiment of the present application) supports the first frequency band; curve ② is the antenna provided in Figure 14 The system radiation efficiency (System Rad.Efficiency) curve of component 10 (i.e., the antenna component 10 provided by the embodiment of this application) supports the first frequency band; curve ③ is the antenna component 10 (i.e., the antenna component implemented by this application) provided in Figure 14 The antenna assembly 10) provided by the method supports the system total efficiency (System Tot.Efficiency) curve when the first frequency band is used. Curve ④ is the S11 curve of the antenna assembly 10 provided in Figure 1 (i.e., the antenna assembly 10 provided by the related art) when working in the second frequency band; curve ⑤ is the S11 curve of the antenna assembly 10 provided in Figure 1 (i.e., the antenna assembly 10 provided by the related art). The system radiation efficiency (SystemRad.Efficiency) curve of the provided antenna assembly 10) when working in the second frequency band; curve ⑥ is the antenna assembly 10 provided in Figure 1 (i.e., the antenna assembly 10 provided by the related art) when working in the second frequency band. Describe the system total efficiency (System Tot.Efficiency) curve in the second frequency band.

It can be seen from this simulation diagram that since the antenna assembly 10 provided in the related art is an EE dual-mode, the efficiency (ie, the total system efficiency) is improved by about 0.8dB compared with the efficiency (ie, the total system efficiency) of the antenna assembly 10 provided by the embodiment of the present application (see In this simulation diagram, point 3 of curve ⑥ and point 1 of curve ③).

Please refer to FIG. 28 and FIG. 29 together. FIG. 28 is a gain table when the antenna assembly shown in FIG. 1 operates in the first frequency band; FIG. 29 is a gain table when the antenna assembly shown in FIG. 14 operates in the first frequency band. It can be seen from these two tables that the gain of the antenna assembly 10 provided by the related art (as shown in Figure 1) when operating in the first frequency band is 0.3dBi higher than the gain of the antenna assembly 10 provided by the embodiment of the present application (as shown in Figure 14). Since gain = directivity coefficient D*efficiency η, the gain of the antenna assembly 10 provided by the related art (as shown in Figure 1) when operating in the first frequency band is improved compared to the gain of the antenna assembly 10 provided by the embodiment of the present application (as shown in Figure 14). 0.3dBi, which means that the directivity coefficient of the antenna assembly 10 provided by the related art (as shown in Figure 1) when operating in the first frequency band is 0.5 worse than the directivity coefficient of the antenna assembly 10 provided by the embodiment of the present application (as shown in Figure 14) dBi. That is, the efficiency of the antenna assembly 10 provided by the related technology is increased by 0.8dB, and the left-hand gain is increased by 0.3dB, because the gain is equal to the directivity coefficient multiplied by the efficiency, and the 0.8dB increase in efficiency smoothes out the 0.5dB decrease in the directivity coefficient. It can be seen that the antenna assembly 10 provided by the embodiment of the present application has a better directivity coefficient than the antenna assembly 10 in the related art, and the antenna assembly 10 provided by the embodiment of the present application has better upper hemisphere directivity.

To sum up, the antenna assembly 10 provided in the embodiment of the present application utilizes the switch switching of the second matching circuit M2 electrically connected to the parasitic branch of the antenna assembly 10, that is, the second radiator 120, so that the antenna assembly 10 supports the second matching circuit M2. In the first frequency band, it has better directivity coefficient and upper hemisphere proportion. In addition, as can be seen from the previous introduction, when the antenna assembly 10 operates in the first frequency band for satellite communication, the voltage to which the first switch 1311 is subjected is lower, thereby reducing or even eliminating the voltage of the first switch 1311 Risk of burnout. When the antenna assembly 10 further includes the second matching sub-circuit 132 , the voltage to which the second switch 1321 is subjected is lower, thereby reducing or even eliminating the risk of the second switch 1321 being burned out. In addition, it can be seen from the previous schematic diagram of current distribution of the antenna assembly 10 that the antenna assembly 10 provided by the embodiment of the present application has no impact on supporting the second frequency band of cellular communications.

Please refer to FIG. 30 , which is a schematic diagram of the distance from the first connection point of the antenna assembly to the coupling gap provided in FIG. 14 . The distance d ₁ from the first connection point P3 to the coupling gap 120 a satisfies: 0 ≤ _{d 1} ≤ _{d 2} /2, where d ₂ is the total length of the second radiator 120 .

For example, d ₁ may be, but is not limited to, 0, d ₂ /10, or d ₂ /9, or d ₂ /8, or d ₂ /7, or d ₂ /6, or d ₂ /5, or d ₂ /4, or d ₂ /3, or d ₂ /2, etc.

In the schematic diagram of this embodiment, the second radiator 120 includes a third radiating part 120b and a fourth radiating part 120c that are bent and connected. The third radiating part 120b has the third end 121. The fourth radiating part 120c has the fourth end 122 . The total length d ₂ of the second radiator 120 is equal to the sum of the length d ₃ of the third radiating part 120 b and the length d ₄ of the fourth radiating part 120 c. That is, d ₂ =d ₃ +d ₄ .

When the distance d ₁ from the first connection point P3 to the coupling gap 120 a is smaller, when the length of the first radiating part 111 is constant and the length of the second radiator 120 is constant, The smaller the energy of the first radiating portion 111 coupled to the portion from the third end 121 of the second radiator 120 to the first connection point P3, then when the antenna assembly 10 is working to communicate with satellites In the first frequency band, the voltage to which the first switch 1311 is subjected is lower, thereby reducing or even eliminating the risk of the first switch 1311 being burned out. When the antenna assembly 10 further includes the second matching sub-circuit 132 , the voltage to which the second switch 1321 is subjected is lower, thereby reducing or even eliminating the risk of the second switch 1321 being burned out. In the antenna assembly 10 provided by the embodiment of the present application, the distance d ₁ from the first connection point P3 to the coupling gap 120 a satisfies: 0 ≤ _{d 1} ≤ _{d 2} /2, which can make the second radiator 120 The smaller the energy of the first radiating part 111 coupled to the part from the three terminals 121 to the first connection point P3, then when the antenna assembly 10 operates in the first frequency band for satellite communication, the The voltage that the first switch 1311 withstands is low, thereby reducing or even eliminating the risk of the first switch 1311 being burned out. When the antenna assembly 10 further includes the second matching sub-circuit 132 , the voltage to which the second switch 1321 is subjected is lower, thereby reducing or even eliminating the risk of the second switch 1321 being burned out.

It can be understood that in the schematic diagram of this embodiment, the above range value of the distance d ₁ can be applied to the antenna assembly 10 provided in any previous embodiment of this application. The antenna assembly 10 shown in this schematic diagram should not be understood as Limitations on the antenna assembly 10 provided in this application.

Please refer to Figures 31, 32 and 33. Figure 31 is a schematic diagram of an antenna assembly provided by another embodiment of the present application; Figure 32 is an equivalent schematic diagram of the antenna assembly in Figure 31 when the fifth end is open; Figure 33 This is a schematic diagram of current distribution in the fourth resonance mode of the antenna assembly in Figure 32. The embodiment of the present application provides an antenna assembly 10. The antenna assembly 10 includes a first radiator 110, a first matching circuit M1, a first feed source S1, a second radiator 120 and a second matching circuit M2. The first radiator 110 includes a first radiation part 111 . The first radiation part 111 includes a first end 1111, a first feed point P1 and a second end 1112. The first end 1111 is grounded. The first feed source S1 is electrically connected to the first matching circuit M1 to the first feed point P1. The first feed source S1 is used to support the first frequency band of satellite communication or the second frequency band of cellular communication. . The second radiator 120 includes a third end 121 , a first connection point P3 and a fourth end 122 . The third end 121 is opposite to the second end 1112 and is spaced apart to form a coupling gap 120 a. The second matching circuit M2 includes a first matching sub-circuit 131. One end of the first matching sub-circuit 131 is electrically connected to the first connection point P3, and the other end is grounded. The first matching sub-circuit 131 includes a first switch 1311 and a first matching branch 1312 connected in series. When the antenna assembly 10 supports the first frequency band, the first switch 1311 is turned on to ground the third end 121 of the second radiator 120 through the first matching subcircuit 131 .

For the first radiator 110 , the first matching circuit M1 , the first feed source S1 , the second radiator 120 and the second matching circuit M2 , please refer to the previous description and will not be described again here.

Furthermore, in this embodiment, the first radiator 110 further includes a second radiator 112 . The second radiating part 112 is connected to the first end 1111 of the first radiating part 111, and the second radiating part has a fifth end 1121 away from the first end 1111. The second radiating part 112 112 has a second connection point P4. The antenna assembly 10 also includes a third matching circuit M3. The third matching circuit M3 is electrically connected to the second connection point P4, and the third matching circuit M3 may be configured to cause the antenna assembly 10 to have a first state in which the fifth terminal 1121 is open or the The second state in which the fifth terminal 1121 is short-circuited. When the antenna assembly 10 operates in the first frequency band supporting satellite communication, the third matching circuit M3 is configured to make the antenna assembly 10 be in the first state. When the antenna component 10 operates in a frequency band other than the first frequency band, the third matching circuit M3 is configured to put the antenna component 10 in the second state. Wherein, when the antenna assembly 10 is in the first state, it has a higher proportion of the upper hemisphere of the pattern than when it is in the second state.

The third matching circuit M3 may be configured to put the antenna assembly 10 in different states. When the antenna assembly 10 operates in the first frequency band supporting satellite communication, the third matching circuit M3 is configured In order to put the antenna component 10 in the first state, when the antenna component 10 operates in a frequency band other than the first frequency band, the third matching circuit M3 is configured to make the antenna component 10 In the second state, the antenna assembly 10 has a higher upper hemisphere proportion of the pattern when it is in the first state than when it is in the second state. Therefore, when the antenna assembly 10 operates in the first frequency band of satellite communication, it has a higher proportion of the upper hemisphere of the pattern. When the antenna assembly 10 uses the first frequency band to communicate with satellites, it has better communication performance.

Further, when the antenna component 10 operates in the first frequency band and when the third matching circuit M3 is configured so that the antenna component 10 is in the first state, the antenna component 10 has a fourth resonance mode. , the fourth resonant mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112, and the third end 121 and the fourth end 122 form a connection with the first end 1111 to the second end 1112. The current from terminal 1111 to the second terminal 1112 flows in the same direction, and the current from the fifth terminal 1121 to the first terminal 1111 is the same as the current from the first terminal 1111 to the second terminal 1112. The same current flows.

The second radiating part 112 may be an integral structure with the first radiating part 111 . In this embodiment, the second radiating part 112 and the first radiating part 111 are integrated as an example for illustration.

The third matching circuit M3 may be controlled so that the fifth terminal 1121 has different states. For example, the third matching circuit M3 may be controlled to open the fifth terminal 1121, to short-circuit the fifth terminal 1121, or to electrically connect the fifth terminal 1121 to other feed sources. When the fifth end 1121 is in different states, the antenna structure of the antenna assembly 10 is different. Therefore, the mode of the antenna assembly 10 when working in the first frequency band is different, the pattern is different, and the upper hemisphere proportion is different. different.

When the fifth terminal 1121 is open, the equivalent circuit can be seen in FIG. 32 . When the first end 1111 is open, the first end 1111 is equivalent to a free end.

Please refer to Figure 33. In this embodiment, the current corresponding to the quarter-wavelength mode from the first terminal 1111 to the second terminal 1112 is marked as current I ₂₁ , and the third terminal 121 and the third terminal 1112 are connected to each other. The current from the four terminals 122 is marked as current I ₂₂ , and the current from the fifth terminal 1121 to the first terminal 1111 is marked as current I ₂₃ . It can be seen that the flow direction of the current I ₂₂ is the same as the flow direction of the current I ₂₁ , and the flow direction of the current I ₂₃ is the same as the flow direction of the current I ₂₁ . From another perspective, when the antenna component 10 operates in the first frequency band and when the third matching circuit M3 is configured to make the antenna component 10 in the first state, the first end 1111 The current of the second terminal 1112 and the current from the third terminal 121 to the fourth terminal 122 are currents corresponding to the EE radiation mode; and the fifth terminal 1121 to the first terminal 1111 and all The current from the first end 1111 to the second end 1112 is the current corresponding to the balanced mode of the T-shaped antenna (referred to as the balanced mode of T). It can be seen that when the antenna component 10 operates in the first frequency band and when the third matching circuit M3 is configured to cause the antenna component 10 to be in the first state, the antenna component 10 has the fourth resonance. mode, wherein the fourth resonance mode includes an EE radiation mode and a current corresponding to the equilibrium mode of T. It can be seen that when the antenna assembly 10 operates in the first frequency band and is in the first state, the antenna assembly 10 has the fourth resonance mode, wherein the fourth resonance mode includes EE radiation. mode, and the equilibrium mode of T. Since the current corresponding to the balanced mode of T is distributed throughout the first radiator 110, in other words, when the antenna component 10 operates in the first frequency band and is in the first state, the antenna component 10 has the fourth resonance mode, wherein the fourth resonance mode includes an EE radiation mode and a half current mode accompanying the entire branch of the first radiator 110 . The half current mode of the entire branch of the first radiator 110 is also called the half-wavelength mode of the first radiator 110 . The current corresponding to the half-wavelength mode of the first radiator 110 is mainly concentrated on the first radiator 110 , while the current on the ground pole (also called the floor 40 ) is smaller and the main radiation direction is upward. This mode The existence of will greatly increase the upward radiation when the antenna assembly 10 supports the first frequency band, and therefore has good pattern directivity and a higher upper hemisphere ratio.

To sum up, in the antenna assembly 10 provided by the embodiment of the present application, the third matching circuit M3 can be controlled so that the fifth terminal 1121 has different states. When the fifth terminal 1121 is open, the The antenna assembly 10 operates in the first frequency band, and the antenna assembly 10 has a first mode. The first mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112, and at all The third end 121 and the fourth end 122 form the same current flow direction as the current from the first end 1111 to the second end 1112, and between the fifth end 1121 and the first end 1111 A current flowing in the same direction as the current flowing between the first end 1111 and the second end 1112 is formed. It can be seen that the current corresponding to the half-wavelength mode from the fifth end 1121 to the second end 1112 is formed on the first radiator 110 , and the fifth end 1121 to the second end The current corresponding to the half-wavelength mode of 1112 is mainly concentrated on the first radiator 110, while the current on the ground pole is smaller. Therefore, when the antenna assembly 10 supports the first frequency band, the main radiation direction is upward, with Good pattern directivity and high upper hemisphere ratio. Therefore, the communication effect of the antenna assembly 10 provided by the embodiment of the present application is better when using the first frequency band to communicate with satellites.

Please refer to FIG. 34 and FIG. 35 together. FIG. 34 is a schematic diagram of current distribution in the fifth resonance mode of the antenna component in FIG. 32 . FIG. 35 is a schematic diagram of current distribution in the sixth resonance mode of the antenna component in FIG. 32 . The second radiation part 112 also has a ground point G0. The ground point G0 is grounded, and the ground point G0 is adjacent to the first end 1111 compared to the first feed point P1. When the antenna component 10 is in the first state: the antenna component 10 also has a fifth resonance mode and a sixth resonance mode. Wherein, the fifth resonance mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112, and the third end 121 and the fourth end 122 form a connection with the third end 1111 to the second end 1112. The current from one end 1111 to the second end 1112 flows in the same direction; and the current from the ground point G0 to the fifth end 1121 is the same as the current from the first end 1111 to the second end 1112 . Current flows in the opposite direction. The sixth resonant mode includes a quarter-wavelength mode from the first end 1111 to the second end 1112, and the third end 121 and the fourth end 122 form a connection with the first end. 1111 The current flowing to the second terminal 1112 is in the opposite direction.

Please refer to FIG. 34 . The current corresponding to the quarter-wavelength mode from the first terminal 1111 to the second terminal 1112 is marked I ₂₁ , and the currents corresponding to the third terminal 121 and the fourth terminal 122 are marked I 21 . I ₂₂ , the current from the ground point G0 to the fifth terminal 1121 is marked I ₂₄ . It can be seen that the flow direction of the current I ₂₂ is the same as the flow direction of the current I ₂₁ , and the flow direction of the current I ₂₄ is opposite to the flow direction of the current I ₂₁ . In other words, in this embodiment, when the antenna assembly 10 works in the first frequency band and is in the first state: in the fifth resonance mode, the first end 1111 reaches the The current at the second end 1112 and the current from the third end 121 to the fourth end 122 are currents corresponding to the EE radiation mode. In other words, the fourth resonance mode includes a radiation mode from the first end 1111 to the fourth end 122 and a quarter-wavelength current mode from the ground point G0 to the fifth end 1121 .

Please refer to Figure 35. The current corresponding to the quarter-wavelength mode from the first end 1111 to the second end 1112 is marked as I ₂₁ , and the current from the fourth end 122 to the third end 121 is marked as I ₂₅ , where the current I ₂₅ flows in the opposite direction to the current I ₂₁ . In other words, in this embodiment, when the antenna assembly 10 operates in the first frequency band and is in the first state: in the sixth resonance mode, the first end 1111 reaches the The current at the second terminal 1112 and the current from the fourth terminal 122 to the third terminal 121 are currents corresponding to the EE balanced mode. In other words, the sixth resonance mode includes the EE balance mode from the first end 1111 to the fourth end 122 . It can be seen that when the antenna component 10 is in the first state with the fifth terminal 1121 open, the antenna component 10 not only has the fourth resonant mode, but also has the fifth resonant mode and the sixth resonant mode. The first frequency band is supported. Therefore, when the antenna assembly 10 is in the first state, the antenna assembly 10 can support the first frequency band using more modes, so that the antenna assembly 10 can support the first frequency band in the first state. The first frequency band has better communication effects.

Please refer to FIG. 36 , which is a partial structural diagram of the antenna assembly shown in FIG. 31 . The third matching circuit M3 includes a third matching branch 152 and a third switch 151 . The third switch 151 has a fifth connection terminal 1511 and a sixth connection terminal 1512 . The antenna assembly 10 also includes a second feed source S2. The second feed source S2 is electrically connected to the third matching branch 152 to the fifth connection terminal 1511, and the sixth connection terminal 1512 is electrically connected to the second connection point P4. When the fifth connection point When the terminal 1511 and the sixth connection terminal 1512 are open, the antenna assembly 10 is in the first state.

The structure of the third matching circuit M3 in this embodiment is simple and easy to implement.

In addition, when the fifth connection terminal 1511 and the sixth connection terminal 1512 are open, the antenna assembly 10 is in the first state. When the antenna assembly 10 operates in the first frequency band for satellite communication, When , the first excitation signal fed by the first feed source S1 has higher power and larger energy. At this time, the fifth connection end 1511 and the sixth connection end 1512 are open, then the second feed source S2 is disconnected from the second connection point P4, then the first The first excitation signal fed by the feed source S1 cannot be fed into the second feed source S2 through the second connection point P4 of the first radiator 110 . If the first excitation signal fed by the first feed source S1 is injected into the second feed source S2, there may be a risk of damaging the second feed source S2. In the antenna assembly 10 provided by the embodiment of the present application, the second feed source S2 is electrically connected to the matching branch to the fifth connection terminal 1511, and the sixth connection terminal 1512 is electrically connected to the second connection point P4. , when the fifth connection terminal 1511 and the sixth connection terminal 1512 are open, the second feed source S2 is electrically disconnected from the second connection point P4. Therefore, the first feed source The first excitation signal fed by S1 cannot be injected into the second feed source S2 through the second connection point P4 of the first radiator 110, thereby reducing or even avoiding the injection of the first excitation signal. The risk of damage to the second feed source S2 caused by the second feed source S2.

Please continue to refer to FIG. 31 and FIG. 36 . The antenna assembly 10 also has the state in which the third switch 151 is turned on. When the antenna assembly 10 is not operating in the first frequency band for communication with satellites, and the third matching circuit M3 is configured to make the antenna assembly 10 be in the second state, the second feed source S2 The second feed source S2 is electrically connected to the second connection point P4 through the third matching circuit M3, and the second feed source S2 is used to support the third frequency band.

When the antenna assembly 10 does not operate in the first frequency band, the second feed source S2 is used to support the third frequency band. Therefore, the antenna assembly 10 provided in the embodiment of the present application can support in addition to the third frequency band, Therefore, the antenna assembly 10 can support more frequency bands and has better communication performance.

Please refer to Figure 37, which is a schematic diagram of the current mode when the antenna assembly in Figure 31 supports the third frequency band. When the antenna assembly 10 supports the third frequency band, the quarter-wavelength mode of the second radiating part 112 supports the third frequency band.

The quarter-wavelength mode is also called the fundamental mode. When the quarter-wavelength mode of the second radiating part 112 operates in the second frequency band, that is, the fundamental mode of the second radiating part 112 operates in The second frequency band has higher radiation efficiency.

It should be noted that the “wavelength” in “the quarter-wavelength mode” in “the quarter-wavelength mode of the second radiating part 112 supports the third frequency band” refers to the second frequency band. The wavelength corresponding to the center frequency point.

Further, in one embodiment, the third frequency band includes a low frequency (Low Band, LB) frequency band; or a Global Positioning System (GPS) L1 frequency band (1.575GHz); or a GPS-L5 frequency band (1.176 GHz); or LB band + WIFI2.4G frequency band; or GPS-L1 frequency band + WIFI2.4G frequency band (2.4GHz-2.5GHz); or GPS-L5 frequency band + WIFI2.4G frequency band.

In this embodiment, the frequency of the first frequency band is a frequency band that supports satellite communication, which is 2.0 GHz to 2.2 GHz. That is, the frequency of the first frequency band is greater than or equal to 2.0 GHz and less than or equal to 2.2 GHz. The antenna assembly 10 provided in this embodiment can support the frequency band of 2.0GHz to 2.2GHz, as well as the LB frequency band; or the GPS L1 frequency band; or the GPS-L5 frequency band; or the LB frequency band + WIFI2.4G frequency band; or the GPS-L1 frequency band + WIFI2. 4G frequency band; or GPS-L5 frequency band + WIFI2.4G frequency band, which can meet the communication needs of the specific frequency band of the antenna assembly 10 .

Please refer to FIG. 38 , which is a schematic diagram of an antenna assembly provided by another embodiment of the present application. In this embodiment, the second radiator 120 has a second feed point P2, and the second feed point P2 is further away from the third end 121 than the first connection point P3. The antenna assembly 10 further includes a fourth switch 160 and a third feed source S3. The third feed source S3 is electrically connected to the second feed point P2 through the fourth switch 160, and the third feed source S3 is used to support the fourth frequency band. When the antenna assembly 10 operates in the first frequency band for communicating with satellites, the fourth switch 160 is turned off. When the antenna assembly 10 does not operate in the first frequency band, the fourth switch 160 is turned on, so that the antenna assembly 10 supports the fourth frequency band.

In the schematic diagram of this embodiment, it is taken as an example that the antenna assembly 10 further includes a fourth switch 160 and a third feed source S3 and is integrated into the antenna assembly 10 provided in the previous embodiment. It can be understood that in this embodiment, The schematic diagrams of the manner should not be understood as limiting the embodiments of the present application. The antenna assembly 10 further includes a fourth switch 160 and a third feed source S3 that can be combined with the antenna assembly 10 provided in any of the previous embodiments.

As can be seen from the previous introduction, when the antenna assembly 10 operates in the first frequency band, the first switch 1311 is turned on, the second radiator 120 couples the energy of the first radiator 110, and the The current of the second radiator 120 passes through the first connection point P3 to ground. The second feed point P2 is further away from the third end 121 than the first connection point P3, and the first resonant current in the first feed source S1 that supports the first frequency band for satellite communication is less. The second feed point P2 cannot even be reached. Therefore, the operation of the third feed source S3 will not be affected, and there is no first resonant current in the first frequency band that supports communication with satellites to push the third feed source S3 Risk of burnout.

Further, when the antenna assembly 10 operates in the first frequency band for satellite communication, the fourth switch 160 is turned off to further ensure the safety of the third feed S3 and the fourth switch 160 .

When the antenna assembly 10 does not operate in the first frequency band, the fourth switch 160 is turned on, so that the antenna assembly 10 supports the fourth frequency band. Therefore, the antenna assembly 10 can support more The frequency band has better communication effect.

Further, in one embodiment, the fourth frequency band includes: N77 frequency band; or N78 frequency band; or N79 frequency band; or GPS-L5 frequency band; or WIFI5G frequency band; or N77 frequency band + WIFI5G frequency band; or N78 frequency band + WIFI5G frequency band ; Or N79 frequency band + WIFI5G frequency band; or GPS-L5 frequency band + WIFI5G frequency band; or N77 frequency band + GPS-L5 frequency band; or N78 frequency band + GPS-L5 frequency band; or N79 frequency band + GPS-L5 frequency band.

The fourth frequency band is also a frequency band for cellular communication. The fourth frequency band is a frequency band for cellular communication and will not affect the operation of the antenna assembly 10 in the first frequency band for satellite communication.

In this embodiment, the fourth frequency band includes: N77 frequency band; or N78 frequency band; or N79 frequency band; or GPS-L5 frequency band; or WIFI5G frequency band; or N77 frequency band + WIFI5G frequency band; or N78 frequency band + WIFI5G frequency band; or N79 Frequency band + WIFI5G frequency band; or GPS-L5 frequency band + WIFI5G frequency band; or N77 frequency band + GPS-L5 frequency band; or N78 frequency band + GPS-L5 frequency band; or N79 frequency band + GPS-L5 frequency band, so that the antenna assembly 10 can meet specific requirements frequency band requirements.

Please refer to the drawings of the aforementioned embodiments, and please refer to FIG. 39 . FIG. 39 is a schematic diagram of an antenna assembly provided by yet another embodiment of the present application. For example, as shown in Figure 31 and so on, in one embodiment, the antenna assembly 10 further includes a second feed source S2. The second feed source S2 is electrically connected to the third matching circuit M3 to the fifth connection terminal 1511 . The second radiation part 112 also has one or a plurality of ground points G0 arranged at intervals, and the ground points G0 are grounded.

In the relevant schematic diagram, the second radiating part 112 having a ground point G0 is taken as an example for illustration. It can be understood that this should not be understood as a limitation on the antenna assembly 10 provided in the embodiment of the present application. In other embodiments, the second radiation part 112 further has a plurality of ground points G0 arranged at intervals. The plurality of ground points G0 are further away from the first feeding point P1 than the ground point of the first end 1111 . This application does not limit the spacing between the plurality of ground points G0.

In this embodiment, the ground point G0 can improve the isolation between the first feed source S1 and the second feed source S2. It can be understood that improving the isolation between the first feed source S1 and the second feed source S2 and improving the pattern directivity and upper hemisphere ratio of the antenna assembly 10 supporting the first frequency band are antenna As for the two-dimensional parameters of the component 10, the improvement of the isolation between the first feed source S1 and the second feed source S2 will not affect the improvement of the pattern of the antenna component 10 supporting the first frequency band. Directivity and upper hemisphere proportion. In other words, the isolation between the first feed source S1 and the second feed source S2 is improved and the antenna assembly 10 supports the pattern directivity and upper hemisphere ratio of the first frequency band. There is no conflict.

Please refer to FIG. 10 and FIG. 40 together. FIG. 40 is a schematic diagram of the antenna assembly provided in FIG. 10 from another angle. The first radiator 110 extends along the first direction D1. The second radiator 120 includes a third radiator part 120b and a fourth radiator part 120c. Wherein, the third radiating part 120b has the third end 121, and the third radiating part 120b extends along the first direction D1, and the fourth radiating part 120c and the third radiating part 120b are bent. The fourth radiating part 120c has the fourth end 122 and extends along the second direction D2.

In one embodiment, the first direction D1 is the extension direction of the short side of the electronic device 1 to which the antenna assembly 10 is applied, and the second direction D2 is the long side of the electronic device 1 to which the antenna assembly 10 is applied. extension direction. The above-mentioned structures of the first radiator 110 and the second radiator 120 are simple in structure and easy to implement.

It can be understood that in the antenna assembly 10 provided in the above embodiments, the second radiator 120 is located on the right side of the first radiator 110 as an example. It can be understood that in other embodiments, it can be The second radiator 120 is disposed on the left side of the first radiator 110 . The antenna assembly 10 shown in the embodiment of the present application can be mirrored left and right to obtain the antenna assembly 10 provided in the new embodiment.

Please refer to Figures 41 and 42. Figure 41 is a schematic diagram of an electronic device provided by an embodiment of the present application; Figure 42 is a schematic diagram of a partial structure of the electronic device shown in Figure 41. The embodiment of the present application also provides an electronic device 1. The electronic device 1 includes, but is not limited to, a mobile phone, a telephone, a television, a tablet (Pad), a camera, a personal computer, a laptop (PC), a vehicle-mounted device, a headset, a watch, a wearable device, a base station, or a vehicle-mounted radar. , Customer Premise Equipment (CPE) and other equipment that can send and receive electromagnetic wave signals. In this application, the electronic device 1 is a mobile phone as an example. For other devices, please refer to the specific description in this application. The electronic device 1 may include the antenna assembly 10 as described in any of the previous embodiments. Please refer to the previous description of the antenna assembly 10 and will not repeat it here.

To sum up, the antenna assembly 10 in the electronic device 1 provided by the embodiment of the present application has coupling between the third end 121 of the second radiator 120 and the second end 1112 of the first radiator 110 . gap 120a, therefore, the second radiator 120 can couple (also referred to as EE coupling) the energy of the first radiator 110 through the electric field of the coupling gap 120a. When the second radiator 120 performs electric field coupling through the coupling gap 120 a to couple the energy of the first radiator 110 , part of the energy will be radiated to free space, and part of the energy will be coupled to the second radiator 120 . Therefore, the energy coupled to the second radiator 120 is weakened compared to the energy of the first radiator 110 , thus reducing the voltage endured by the first switch 1311 in the first matching sub-circuit 131 . On the other hand, when the first switch 1311 in the second matching circuit M2 is turned on, the third end 121 of the second radiator 120 is grounded through the first matching sub-circuit 131. Therefore, The portion of the second radiator 120 between the first connection point P3 and the fourth end 122 is short-circuited. Since the size between the first connection point P3 and the coupling gap 120a is smaller than the size of the second radiator 120, the main current when the antenna assembly 10 supports the first frequency band is basically concentrated in The first radiator 110 is on the first radiator 110 instead of the second radiator 120 . Therefore, the voltage endured by the first switch 1311 in the first matching sub-circuit 131 will also be reduced. Based on the two reasons described above, when the antenna assembly 10 operates in the first frequency band for satellite communication, the voltage to which the first switch 1311 is subjected is lower, thereby reducing or even eliminating the first switch 1311 Risk of burnout.

Further, the electronic device 1 has a top 1a and a bottom 1b arranged oppositely, and the first radiator 110 and the second radiator 120 are disposed on the top 1a of the electronic device 1 .

In the antenna assembly 10 provided in the previous embodiments, the first radiator 110 and the second radiator 120 are located on the floor 40 (in this embodiment, the frame body 310 of the frame 30 in the floor 40) The top of 1a. In one embodiment, the top 1 a of the floor 40 is the top 1 a of the electronic device 1 .

The top portion 1 a of the electronic device 1 generally refers to the upper portion of the electronic device 1 when it is used. Generally speaking, the top 1 a of the electronic device 1 occupies one-third or less than one-third of the entire electronic device 1 . Correspondingly, the so-called bottom 1 b of the electronic device 1 generally refers to the part located below the electronic device 1 when it is used. Generally speaking, the bottom 1 b of the electronic device 1 occupies one-third or less than one-third of the entire electronic device 1 .

Since the satellite is located in the sky, that is, the satellite is located above the electronic device 1 . In the electronic device 1 provided by the embodiment of the present application, the first radiator 110 and the second radiator 120 are disposed on the top 1a of the electronic device 1. Therefore, when the antenna assembly 10 is working to communicate with satellites, In the first frequency band, the communication effect is better.

The electronic device 1 has a top edge 11a and a side edge 11b that is bent and connected to the top edge 11a. The top edge 11a is located at the top 1a, and the side edge 11b has a preset section 11c located at the top 1a. The first radiator 110 is disposed on the top edge 11a, part of the second radiator 120 is disposed on the top edge 11a, and the other part of the second radiator 112120c is located on the side 11b. The preset section 11c.

In this embodiment, the length of the top side 11a is less than the length of the side side 11b, that is, the top side 11a is the short side of the electronic device 1, and the side side 11b is the short side of the electronic device 1. long side. It should be understood that this should not be understood as a limitation on the antenna assembly 10 provided in the embodiment of the present application.

Since the satellite is located in the sky, that is, the satellite is located above the electronic device 1 . In the electronic device 1 provided by the embodiment of the present application, the top edge 11a is located on the top 1a, and the side 11b has a preset section 11c located on the top 1a. The first radiator 110 is disposed on the top edge 11a, part of the second radiator 120 is disposed on the top edge 11a, and the other part of the second radiator 112120c is located on the side 11b. The preset section 11c, therefore, when the antenna assembly 10 operates in the first frequency band for communication with satellites, the communication effect is better.

Please refer to FIG. 41 . In one embodiment, the middle frame 30 includes a frame body 310 and a frame 320 . The frame 320 is located around the periphery of the frame body 310 . The first radiator 110 and the second radiator 120 are formed on the frame.

The middle frame 30 is usually conductive and is made of metal (such as aluminum or aluminum-magnesium alloy). In the electronic device 1 , the middle frame 30 is usually used to carry the display screen 70 and the battery cover. Since the middle frame 30 can conduct electricity, the middle frame 30 can also serve as a ground electrode. Components in the electronic device 1 may be directly or indirectly electrically connected to the middle frame 30 for grounding.

Specifically, in this embodiment, the frame 320 has an outer surface 320a facing away from the frame body 310 . There is a first gap 320b between the top portion of the frame 320 and the frame body 310. The frame 320 has a second gap 320c located on the outer surface 320a and connected to the first gap 320b (i.e. The coupling gap 120a). The first slit 320b and the second slit 320c jointly define the first radiating portion 111 of the first radiator 110 . There is a third gap 320d between the side portion of the frame 320 and the frame body 310 . The third gap 320d is connected with the first gap 320b, and the third gap 320d, the first gap 320b and the second gap 320c jointly define the second radiator 120. It can be seen that the partial frame 320 is formed into the first radiator 110 and the second radiator 120 .

In this embodiment, the frame body 310 can serve as an earth pole. The ground point G0 of the first radiator 110 is electrically connected to the frame body 310 for grounding, and the fourth end 122 of the second radiator 120 is electrically connected to the frame body 310 for grounding.

Compared with at least one of the first radiator 110 and the second radiator 120 having a structure independent of the middle frame 30 , in this embodiment, part of the frame 320 of the middle frame 30 of the electronic device 1 is complex. Being used as the first radiator 110 and the second radiator 120 can make the electronic device 1 smaller in size and easier to assemble.

In other embodiments, the electronic device 1 further includes a display screen 70 , a middle frame 30 and a housing 90 (also called a battery cover). The display screen 70 and the housing 90 are respectively disposed on opposite sides of the middle frame 30 .

In addition, in one embodiment, the middle frame 30 and at least one of the housing 90 and the display screen 70 also form a receiving space. The electronic device 1 also includes a battery and functional devices located in the accommodation space (the functional devices may include one or more of a camera module, a microphone, a receiver, a speaker, a face recognition module, and a fingerprint recognition module. (or) and other devices that can realize the basic functions of the mobile phone will not be described again in this embodiment. It can be understood that the above introduction to the electronic device 1 is only an illustration of an environment in which the antenna assembly 10 is applied, and the specific structure of the electronic device 1 should not be understood as limiting the antenna assembly 10 provided in this application. In other embodiments, the electronic device 1 may not include at least one of the display screen 70 and the housing 90 .

Please refer to Figure 43, which is a circuit block diagram of an electronic device provided by an embodiment of the present application. The electronic device 1 further includes a processor 50, which is electrically connected to the second matching circuit M2 and used to control the state of the second matching circuit M2.

In the schematic diagram of this embodiment, the electronic device 1 further includes a processor 50 integrated into the antenna assembly 10 provided in the previous embodiment. It can be understood that the specific structure of the antenna assembly 10 shown in this schematic diagram is, In particular, the specific structure of the second matching circuit M2 should not be understood as limiting the electronic device 1 provided in the embodiment of the present application. The electronic device 1 further includes a processor 50 that can be incorporated into the antenna assembly 10 provided in other embodiments described above.

The second matching circuit M2 is controlled by the processor 50. When the antenna assembly 10 supports the first frequency band, the processor 50 controls the first switch 1311 in the second matching circuit M2 to be turned on. . There is a coupling gap 120a between the third end 121 of the second radiator 120 and the second end 1112 of the first radiator 110. Therefore, the second radiator 120 can pass the electric field of the coupling gap 120a. The energy of the first radiator 110 is coupled (also called EE coupling). When the second radiator 120 performs electric field coupling through the coupling gap 120 a to couple the energy of the first radiator 110 , part of the energy will be radiated to free space, and part of the energy will be coupled to the second radiator 120 . Therefore, the energy coupled to the second radiator 120 is weakened compared to the energy of the first radiator 110 , thus reducing the voltage endured by the first switch 1311 in the first matching sub-circuit 131 . On the other hand, when the first switch 1311 in the second matching circuit M2 is turned on, the third end 121 of the second radiator 120 is grounded through the first matching sub-circuit 131. Therefore, The portion of the second radiator 120 between the first connection point P3 and the fourth end 122 is short-circuited. Since the size between the first connection point P3 and the coupling gap 120a is smaller than the size of the second radiator 120, the main current when the antenna assembly 10 supports the first frequency band is basically concentrated in The first radiator 110 is on the first radiator 110 instead of the second radiator 120 . Therefore, the voltage endured by the first switch 1311 in the first matching sub-circuit 131 will also be reduced. Based on the two reasons described above, when the antenna assembly 10 operates in the first frequency band for satellite communication, the voltage to which the first switch 1311 is subjected is lower, thereby reducing or even eliminating the first switch 1311 Risk of burnout.

When the antenna assembly 10 further includes a third matching circuit M3, the processor 50 is also electrically connected to the third matching circuit M3 for controlling the state of the third matching circuit M3.

The above are some embodiments of the present application. It should be pointed out that for those of ordinary skill in the technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also regarded as This is the protection scope of this application.

Claims (22)

1. An antenna assembly, the antenna assembly comprising:

the first radiator comprises a first radiation part, wherein the first radiation part comprises a first end, a first feed point and a second end, and the first end is grounded;

a first matching circuit;

a first feed source electrically connecting the first matching circuit to the first feed point, the first feed source being configured to feed an excitation signal of a first frequency band supporting satellite communication or an excitation signal of a second frequency band supporting cellular communication to the first radiator;

the second radiator comprises a third end, a first connecting point and a fourth end, and the third end is opposite to the second end and is arranged at intervals to form a coupling gap; and

The second matching circuit comprises a first matching sub-circuit, one end of the first matching sub-circuit is electrically connected to the first connecting point, the other end of the first matching sub-circuit is grounded, and the first matching sub-circuit comprises a first switch and a first matching branch circuit which are connected in series;

when the antenna assembly works in the first frequency band, the first switch is conducted so as to connect the third end of the second radiator to the ground through the first matching sub-circuit; when the antenna assembly works in the second frequency band, the first switch is disconnected.

2. The antenna assembly of claim 1, wherein the antenna assembly has a first resonant mode when the antenna assembly supports the first frequency band, the first resonant mode including a quarter wavelength mode from the first end to the second end, and forming a current flow at the third end to the first connection point that is the same as a current flow at the first end to the second end.

3. The antenna assembly of claim 2, the first resonant mode generating a first resonant current and a second resonant current, wherein the first resonant current is distributed from the first end to the second end, the second resonant current is distributed from the third end to the first connection point, and from the first matching sub-circuit down, wherein a current intensity J1 of the first resonant current and a current intensity J2 of the second resonant current satisfy: j2 < J1.

4. The antenna assembly of claim 1, wherein the first switch includes a first connection terminal electrically connecting the first matching branch to the first connection point and a second connection terminal electrically connected to ground, the first switch being turned on when the first connection terminal is electrically connected to the second connection terminal.

5. The antenna assembly of claim 1, wherein the first matching branch comprises a shorting line; or an inductance, wherein the inductance value of the inductance is less than or equal to 5nH.

6. The antenna assembly of claim 1, wherein the first frequency band comprises a transmit sub-band and a receive sub-band;

the second matching circuit further includes:

the second matching sub-circuit is electrically connected to the first connecting point at one end and grounded at the other end, and comprises a second switch and a second matching branch circuit which are connected in series;

when the antenna component works in a transmitting sub-frequency band of the first frequency band, the first switch is turned on and the second switch is turned off; when the antenna assembly supports the receiving sub-band of the first band, the first switch is turned on and the second switch is turned on.

7. The antenna assembly of claim 6, wherein the second switch includes a third connection terminal electrically connecting the second matching branch to the first connection point and a fourth connection terminal electrically connected to ground; when the third connecting end is electrically connected with the fourth connecting end, the second switch is conducted; and when the third connecting end and the fourth connecting end are electrically disconnected, the second switch is disconnected.

8. The antenna assembly of claim 6, wherein the second matching branch comprises a shorting line; or an inductance, wherein the inductance value of the inductance is less than or equal to 5nH.

9. The antenna assembly of claim 6 wherein the second switch is open when the antenna assembly is operating in the second frequency band.

10. The antenna assembly of claim 9, wherein the second frequency band comprises a first sub-band and a second sub-band, the antenna assembly having a second resonant mode and a three resonant mode, wherein the second resonant mode supports the first sub-band and the second resonant mode supports the second sub-band.

11. The antenna assembly of claim 10, wherein the second resonant mode comprises a quarter-wave mode from the first end to the second end, and wherein the same current flow is established from the third end to the fourth end as the current flow from the first end to the second end;

the third resonant mode includes a quarter wavelength mode from the first end to the second end, and a current flow opposite to a current flow from the first end to the second end is formed at the third end to the fourth end.

12. The antenna assembly of claim 10, wherein the first sub-band comprises a B3 band and the second sub-band comprises a B41 band.

13. The antenna assembly of claim 1, the first radiator further comprising: a second radiating portion connected to the first end of the first radiating portion, the second radiating portion having a fifth end remote from the first end, the second radiating portion having a second connection point;

the antenna assembly further comprises: a third matching circuit electrically connected to the second connection point, the third matching circuit configurable to have the antenna assembly have a first state with the fifth end open or a second state with the fifth end short;

When the antenna assembly is operated in the first frequency band supporting satellite communication, the third matching circuit is configured to enable the antenna assembly to be in the first state; the third matching circuit is configured to place the antenna assembly in the second state when the antenna assembly is operating in a frequency band other than the first frequency band, wherein the antenna assembly has a higher hemispherical duty cycle in the pattern when in the first state than when in the second state.

14. The antenna assembly of claim 13, wherein when the antenna assembly is operating in the first frequency band and when the third matching circuit is configured such that the antenna assembly is in a first state, the antenna assembly has a fourth resonant mode including a quarter wavelength mode of the first end to the second end, and a current flow in the third end and the fourth end that is the same as a current flow in the first end to the second end, and a current flow in the fifth end to the first end that is the same as a current flow in the first end to the second end.

15. The antenna assembly of claim 14, the second radiating portion further having a ground point, the ground point being grounded and the ground point being adjacent the first end as compared to the first feed point;

When the third matching circuit is configured to cause the antenna assembly to be in the first state: the antenna assembly also has a fifth resonant mode and a sixth resonant mode;

wherein the fifth resonant mode comprises a quarter-wavelength mode from the first end to the second end and forms a current at the third end and the fourth end that is the same as the current flowing from the first end to the second end; and forming a current flow opposite to a current flow of the first end to the second end at the ground point to the fifth end;

the sixth resonant mode includes a quarter wavelength mode from the first end to the second end and a current flow opposite to a current flow from the first end to the second end is formed at the third end and the fourth end.

16. The antenna assembly of claim 14, wherein the third matching circuit comprises a third matching branch and a third switch, the third switch having a fifth connection and a sixth connection; the antenna assembly further comprises:

a second feed;

the second feed source is electrically connected with the third matching branch to the fifth connecting end, the sixth connecting end is electrically connected with the second connecting point, and when an open circuit exists between the fifth connecting end and the sixth connecting end, the antenna assembly is in the first state.

17. The antenna assembly of claim 16, wherein the second feed is electrically connected to the second connection point through the third matching circuit when the antenna assembly is not operating in a first frequency band for communication with a satellite and the third matching circuit is configured to place the antenna assembly in the second state, the second feed for supporting a third frequency band, and the like.

18. The antenna assembly of claim 17 wherein a quarter wavelength mode of the second radiating portion supports the third frequency band.

19. The antenna assembly of claim 17, wherein the third frequency band comprises: LB frequency band; or GPS-L1 frequency band; or GPS-L5 frequency band, or LB frequency band + WIFI2.4G frequency band; or the GPS-L1 frequency band + WIFI2.4G frequency band; or the GPS-L5 band + WIFI2.4G band.

20. The antenna assembly of claim 1, wherein the second radiator has a second feed point that is further from the third end than the first connection point, the antenna assembly further comprising:

a fourth switch;

the third feed source is connected to the second feed point through the fourth switch and is used for supporting a fourth frequency band;

When the antenna assembly works in the first frequency band communicated with a satellite, the fourth switch is turned off; when the antenna component does not work in the first frequency band, the fourth switch is conducted so that the antenna component supports the fourth frequency band.

21. The antenna assembly of claim 20, wherein the fourth frequency band comprises: n77 frequency band; or N78 band; or N79 frequency band; or GPS-L5 frequency band; or a WIFI5G frequency band; or an N77 frequency band plus a WIFI5G frequency band; or an N78 frequency band plus a WIFI5G frequency band; or an N79 frequency band plus a WIFI5G frequency band; or GPS-L5 frequency band+WIFI 5G frequency band; or the N77 frequency band plus the GPS-L5 frequency band; or the N78 frequency band plus the GPS-L5 frequency band; or the N79 band + GPS-L5 band.

22. An electronic device comprising an antenna assembly according to any of claims 1-21;

the electronic equipment is provided with a top and a bottom which are arranged in a back-to-back mode, and the first radiator and the second radiator of the antenna assembly are arranged at the top of the electronic equipment.