CN211556119U - Electronic device - Google Patents

Abstract

An electronic device includes a middle frame, a first excitation source, a second excitation source, and an isolation circuit. The middle frame comprises a middle frame body and a frame connected to the periphery of the middle frame body. The periphery of center body is seted up and is run through the first gap on two relative surfaces of center body, still has seted up the second gap on the frame adjacent with first gap, and first gap of second gap intercommunication, first gap and second gap are cut apart into first minor matters and second minor matters with the frame. The first excitation source is electrically connected with the first branch, and feeds a first excitation current into the first branch so as to excite the first branch to serve as a first antenna of the radiator to resonate in a WIFI frequency band and a GPS L1 frequency band. The second excitation source is electrically connected with the second branch, feeds a second excitation current into the second branch, and excites the second branch to serve as a second antenna of the radiator to resonate in a frequency band of the GPS L5. The isolation circuit is electrically connected with the second branch knot and isolates the interference of the first antenna to the second antenna. The electronic equipment has a good communication effect.

Description

Electronic equipment

technical field

The present application relates to the field of communication technologies, and in particular, to an electronic device.

Background technique

With the development of mobile communication technology, smart phones with communication functions are more and more favored by users. Currently, the global positioning system (Global Positioning System, GPS) antennas in mainstream mobile phones in the industry mainly have two frequency bands, the L1 frequency band and the L5 frequency band. At present, most smart phones on the market can only support the L1 frequency band. Therefore, the positioning and navigation accuracy of the current smart phones on the market is not high. Smartphones that support both L1 and L5 frequency bands have high positioning and navigation accuracy. However, since mobile phones in the L5 frequency band are susceptible to interference from other frequency bands, or interference from other devices in the smartphone, the antennas supporting the L5 frequency band have higher accuracy. Communication performance is poor.

Utility model content

This application provides an electronic device, including:

A middle frame, the middle frame includes a middle frame body and a frame connected to the periphery of the middle frame body, and the periphery of the middle frame body is provided with a first slit that penetrates two opposite surfaces of the middle frame body, and is connected to the middle frame body. The frame adjacent to the first slot is also provided with a second slot, the second slot communicates with the first slot, and the first slot and the second slot divide the frame into first slots. branch and second branch;

a first excitation source, electrically connected to the first branch, for feeding a first excitation current to the first branch to excite the first antenna of the first branch as a radiator to resonate in the WIFI frequency band and GPS L1 frequency band;

a second excitation source, electrically connected to the second branch, for feeding a second excitation current to the second branch, and exciting the second antenna used as a radiator to resonate in the GPS L5 frequency band; and

An isolation circuit, electrically connected to the second branch, is used to isolate the interference of the first antenna to the second antenna.

The present application also provides an electronic device, the electronic device includes a casing, the casing includes a body and a frame connected to the periphery of the body, the body includes a first surface and a second surface disposed opposite to each other, The periphery of the body is provided with a first slit penetrating the first surface and the second bearing surface, the first slit isolates at least a part of the frame from the body, and the frame is The second slot of the first slot, the first slot and the second slot divide the frame into a first part and a second part, and the electronic device further includes a first excitation source, a second excitation source, and an isolation a circuit, the first excitation source is electrically connected to one end of the first part adjacent to the second slot, the second excitation source is electrically connected to the isolation circuit to an end of the second part adjacent to the second slot, The isolation circuit is used to prevent the first antenna where the first excitation source is located from interfering with the second antenna where the second excitation source is located.

The electronic device provided in the embodiment of the present application divides the first branch of the first antenna and the second branch of the second antenna through the same slot on the frame, and at the same time isolates the interference of the first antenna to the second antenna through an isolation circuit, thereby It is ensured that even if the first branch of the first antenna and the second branch of the second antenna are separated only by a small gap, the first antenna and the second antenna can still work normally. The configuration of the isolation circuit can isolate the first antenna and the second antenna, which is beneficial to improve the communication performance of the second antenna. In addition, the number of slits on the frame of the middle frame in the electronic device in the embodiment of the present application is small, which is beneficial to improve the structural strength of the middle frame on the one hand, and can save processing time on the other hand. When the surface of the frame away from the middle frame body is used as a part of the appearance surface of the electronic device, the appearance integrity of the electronic device can be improved.

Description of drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the implementation manner. As far as technical personnel are concerned, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic three-dimensional structural diagram of an electronic device according to an embodiment of the present application.

FIG. 2 is a schematic perspective view of an angle of a middle frame in an electronic device according to an embodiment of the present application.

FIG. 3 is a perspective view of another angle of the middle frame shown in FIG. 2 .

FIG. 4 is a top view of a middle frame in the electronic device provided in FIG. 1 in an embodiment.

FIG. 5 is a schematic diagram of the antenna formed by the first branch and the second branch in the middle frame.

FIG. 6 is a top view of the middle frame in the electronic device provided in FIG. 1 in another embodiment.

FIG. 7 is a circuit diagram of an isolation circuit provided by an embodiment of the present application.

FIG. 8 is a schematic diagram of a first antenna provided by an embodiment of the present application.

FIG. 9 is a schematic cross-sectional structural diagram of an electronic device according to another embodiment of the present application along line I-I.

FIG. 10 is a simulation diagram of the isolation of the first antenna and the second antenna of the present application.

FIG. 11 is a schematic diagram of the radiation efficiency of the first antenna of the present application.

FIG. 12 is a schematic diagram of the radiation efficiency of the second antenna of the present application.

FIG. 13 is a schematic diagram of the back of an electronic device provided by an embodiment of the present application.

FIG. 14 is a schematic view of the battery cover in the electronic device of the present application from the inner surface.

FIG. 15 is a schematic cross-sectional view along the line II-II in FIG. 13 .

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The present application provides an electronic device 1, and the electronic device 1 can be, but is not limited to, any device with a communication function. For example: tablet computer, mobile phone, electronic reader, remote control, personal computer (Personal Computer, PC), notebook computer, in-vehicle device, Internet TV, wearable device and other smart devices with communication functions. In the schematic diagram of the embodiment, the electronic device 1 is a mobile phone as an example for illustration. Please refer to FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 together. FIG. 1 is a schematic three-dimensional structure diagram of an electronic device provided by an embodiment of the application; FIG. 2 is a schematic diagram of the electronic device provided by an embodiment of the application. A perspective view of an angle of the middle frame; FIG. 3 is a perspective view of another angle of the middle frame shown in FIG. 2 ; FIG. 4 is a top view of the middle frame in the electronic device provided in FIG. 1 in one embodiment; The first branch and the second branch in the box form a schematic diagram of the antenna. The electronic device 1 includes a middle frame 10 , a first excitation source 220 , a second excitation source 340 and an isolation circuit 320 . The middle frame 10 includes a middle frame body 110 and a frame 120 connected to the periphery of the middle frame body 110 . The periphery of the middle frame body 110 is provided with a first slit 130 penetrating two opposite surfaces of the middle frame body 110 . A second slit 1221 is also defined on the frame 120 adjacent to the first slit 130 . The first slot 130 and the second slot 1221 divide the frame 120 into a first branch 210 of the first antenna 20 (see FIG. 5 ) and a second branch 310 of the second antenna 30 (see FIG. 5 ). . The first antenna 20 sends and receives electromagnetic wave signals through the first branch 210 , and the second antenna 30 sends and receives electromagnetic wave signals through the second branch 310 . The first excitation source 220 is electrically connected to the first branch 210 for feeding the first excitation current to the first branch 210 to excite the first branch 210 as a radiator. The first antenna 20 resonates in the first frequency band. The second excitation source 340 is electrically connected to the second branch 310 for feeding a second excitation current to the second branch 310 and exciting the second antenna 30 of the second branch 310 as a radiator to resonate in the second frequency band. In the frequency band, the isolation circuit 320 is electrically connected to the second branch 310 , and the isolation circuit 320 is used to isolate the interference of the first antenna 20 to the second antenna 30 . The first frequency band includes a WIFI frequency band and a GPS L1 frequency band, and the second frequency band includes a GPS L5 frequency band. The first frequency band and the second frequency band will be described in detail later.

In one embodiment, the frame 120 includes a connected first frame 121 and a second frame 122 (see FIG. 4 ), and the first slit 130 corresponds to a part of the first frame 121 and a part of the second frame 122 . Specifically, the electronic device 1 includes a middle frame 10 . The middle frame 10 includes a middle frame body 110 , a first frame 121 , and a second frame 122 . The periphery of the middle frame body 110 defines a first slit 130 penetrating two opposite surfaces of the middle frame body 110 , and the first slit 130 corresponds to part of the first frame 121 and part of the second frame 122 . The first frame 121 and the second frame 122 are connected to the periphery of the middle frame body 110 by bending. The second frame 122 defines a second slit 1221. The second frame 122 faces away from the surface of the middle frame body 110 and communicates with the first slit 130 . The second slot 1221 and the first slot 130 divide the first frame 121 and the second frame 122 into a first branch 210 of the first antenna 20 and a second branch 310 of the second antenna 30 , The second antenna 30 further includes an isolation circuit 320 , the isolation circuit 320 is electrically connected to the second branch 310 , and the isolation circuit 320 is used to isolate the interference of the first antenna 20 to the second antenna 30 .

It should be noted that the terms "first" and "second" in the terms "first frame 121" and "second frame 122" in the description and claims of the present application and the above drawings are used to distinguish different objects, not used to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

In another embodiment, please refer to FIG. 6 , which is a top view of the middle frame in the electronic device provided in FIG. 1 in another embodiment. In this embodiment, the first slit 130 only corresponds to the frame 120 having the second slit 1221 .

In the following embodiments, a part of the first frame 121 and a part of the second frame 122 corresponding to the first slit 130 are taken as an example for detailed description. In the schematic diagram, the first frame 121 is a long frame of the electronic device, and the second frame 122 is a short frame of the electronic device.

The material of the middle frame 10 is a conductive material. For example, the material of the middle frame 10 may be, but not limited to, aluminum-magnesium alloy. The middle frame body 110 is substantially rectangular. Although the embodiment of the present application is described by taking the middle frame 10 including the connected first frame 121 and the second frame 122 as an example for description, it is understood that the middle frame 10 may also include other frames 120 . In the mobile phone, in addition to the first frame 121 and the second frame 122, the middle frame 10 may also include other frames 120, and all the frames 120 in the middle frame 10 can be connected in sequence and connected to the frame. 120 The periphery of the body. The middle frame 10 may also be injection-molded with an insulating material, and the insulating material may be, but not limited to, plastic. The present application does not limit the specific structure of the middle frame 10 , as long as the middle frame 10 includes the middle frame body 110 , the first frame 121 and the second frame 122 .

In one embodiment, the middle frame 10 may be an integral structure, in other words, the frame 120 of the middle frame 10 (including but not limited to the first frame 121 and the second frame 122 ) and the middle frame body 110 in one. In other embodiments, the frame 120 of the middle frame 10 and the middle frame body 110 can be prepared separately and then fixed together. It is limited to be fixed together by welding.

In one embodiment, the middle frame 10 may be used to carry other components of the electronic device 1 , such as a circuit board, a screen, and the like in the electronic device 1 . The middle frame body 110 can be used as a ground pole in the electronic device 1 , and some components in the electronic device 1 that need to be grounded can be directly or electrically connected to the middle frame body 110 to achieve grounding. For example, the circuit board in the electronic device 1 is electrically connected to the middle frame body 110 for grounding.

Please refer to FIGS. 2 and 3 again. The first slit 130 is opened at the middle frame body 110 adjacent to the first frame 121 and the second frame 122 , and the first slit 130 penetrates the middle frame Two surfaces of the body 110 in the thickness direction. The second slit 1221 communicates with the first slit 130 and cuts the second frame 122 into two parts. Specifically, the second frame 122 includes a first surface 1222, a second surface 1223, and a third surface 1224. The first surface 1222 is the surface of the second frame 122 facing away from the middle frame body 110, so The second surface 1223 is opposite to the third surface 1224 , the second surface 1223 is connected to the first surface 1222 by bending, and the third surface 1224 is connected to the first surface 1222 by bending. The second slit 1221 penetrates the first surface 1222 , and the slit also penetrates the second surface 1223 and the third surface 1224 .

The width W1 of the first slit 130 is: 0.8mm≤W1≤2.0mm. When the width of the first slot 130 is larger, the clearance of the first antenna 20 and the second antenna 30 is larger, and the performance of the first antenna 20 and the second antenna 30 for sending and receiving electromagnetic wave signals is improved. the better. Correspondingly, the width W2 of the second slit 1221 is: 0.8mm≤W2≤2.0mm. When the width of the second slot 1221 is larger, the clearance of the first antenna 20 and the second antenna 30 is larger, and the performance of the first antenna 20 and the second antenna 30 for transmitting and receiving electromagnetic wave signals is increased. the better.

In one embodiment, the first frame 121 is connected to the periphery of the frame 120 body, and the first frame 121 protrudes out of the middle frame body 110 to open the first slit 130 on two surfaces of the two surfaces. at least one surface. The second frame 122 is connected to the first frame 121 by bending, the second frame 122 is connected to the periphery of the frame 120 body, and the second frame 122 protrudes from the frame 120 body to open the At least one of the two surfaces of the second slit 1221 . The first frame 121 , the second frame 122 and the middle frame body 110 form an accommodation space for accommodating components in the electronic device 1 . In the schematic diagram of this embodiment, the first frame 121 and the second frame 122 both protrude from the two surfaces of the middle frame body 110 to define the first slit 130 as an example for illustration.

The division of the first branch 210 and the second branch 310 will be described in detail below. The first slit 130 includes an end away from the second frame 122 and an end away from the first frame 121 . For the convenience of naming, the end of the first slit 130 away from the second frame 122 is named as the first end, and the end of the first slot 130 away from the first frame 121 is named as the second end. Since the part of the first frame 121 corresponding to the first end is connected with the middle frame body 110 , the part where the first frame 121 is connected to the middle frame body 110 can be regarded as the first frame The ground terminal of a branch 210 . Therefore, the part of the first frame 121 corresponding to the first slit 130 and the part of the second frame 122 connected to the first frame 121 are the first branches 210 . Since the part of the second frame 122 corresponding to the second end is connected with the middle frame body 110 , the part where the second frame 122 is connected to the middle frame body 110 can be regarded as is the ground terminal of the second branch 310 . Therefore, the portion of the second frame 122 not connected to the first frame 121 and corresponding to the first slit 130 is the second branch 310 .

When the first antenna 20 is a receiving antenna, the first branch 210 is a component for the first antenna 20 to receive electromagnetic wave signals. In other words, the first antenna 20 receives the electromagnetic wave signal through the first branch 210 Electromagnetic wave signal; when the first antenna 20 is a transmitting antenna, the first branch node 210 is a component of the first antenna 20 to radiate electromagnetic wave signals, in other words, the first antenna 20 passes through the first branch Section 210 transmits an electromagnetic wave signal. Correspondingly, when the second antenna 30 is a receiving antenna, the second branch 310 is a component for the second antenna 30 to receive electromagnetic wave signals. In other words, the second antenna 30 receives electromagnetic waves through the second branch 310 signal; when the second antenna 30 is a transmitting antenna, the second branch 310 is a component for the second antenna 30 to radiate electromagnetic wave signals, in other words, the second antenna 30 transmits through the second branch 310 Electromagnetic wave signal.

In one embodiment, the first gap 130 is not filled with any filling. It can be understood that, in another embodiment, the first gap 130 is filled with a non-electromagnetic wave shielding medium, and the non-electromagnetic wave shielding medium may be, but not limited to, plastic. Compared with the middle frame 10 in which the non-electromagnetic wave shielding medium is not filled in the first slot 130 , the structural strength of the middle frame 10 is higher when the first slot 130 is filled with the non-electromagnetic wave shielding medium.

In one embodiment, the second gap 1221 is not filled. Understandably, in an embodiment, the second slot 1221 is also filled with a non-electromagnetic wave shielding medium. Compared with the middle frame 10 in which the second slot 1221 is not filled with the non-electromagnetic wave shielding medium, the structural strength of the middle frame 10 when the second slot 1221 is filled with the non-electromagnetic wave shielding medium is higher. When the surface of the frame 120 facing away from the middle frame body 110 forms part of the appearance surface of the electronic device 1 , the second gap 1221 is filled with a non-electromagnetic wave shielding medium to enhance the dustproof and waterproof of the electronic device 1 performance.

The electronic device 1 provided in the embodiment of the present application divides the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 through the same slot (the second slot 1221 ) on the second frame 122 , and simultaneously passes through the same slot (the second slot 1221 ) on the second frame 122 The isolation circuit 320 isolates the interference of the first antenna 20 to the second antenna 30, so as to ensure that even if the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 are only separated by fewer gaps When turned on, the first antenna 20 and the second antenna 30 can still work normally. The configuration of the isolation circuit 320 can isolate the first antenna 20 and the second antenna 30 , which is beneficial to improve the communication performance of the second antenna 30 . In addition, the number of slits on the frame 120 of the middle frame 10 in the electronic device 1 in the embodiment of the present application is small, which is beneficial to improve the structural strength of the middle frame 10 on the one hand, and save processing time on the other hand. Furthermore, when the surface of the frame 120 away from the middle frame body 110 is used as a part of the appearance surface of the electronic device 1 , the appearance integrity of the electronic device 1 can be improved.

Please refer to FIG. 7 together. FIG. 7 is a circuit diagram of an isolation circuit provided by an embodiment of the present application. The first antenna 20 operates in a first frequency band, and the first frequency band includes the GPS L1 frequency band, the WIFI 2.4G frequency band, the WIFI 5.2G frequency band, and the WIFI 5.8G frequency band. The second antenna 30 operates in a second frequency band, and the second frequency band includes the GPS L5 frequency band. The isolation circuit 320 includes at least one of a first filtering unit 321 and a second filtering unit 322. The first filtering unit 321 is configured to filter out the GPS L1 frequency band in the first antenna 20 to the second filtering unit 322. For the interference of the antenna 30 , the second filtering unit 322 is configured to filter the interference of the WIFI 5.2G frequency band and the WIFI 5.8G frequency band in the first antenna 20 to the second antenna 30 .

The so-called GPS L1 band refers to the 1.575GHz±5MHz band; the so-called WIFI 2.4G band refers to the 2.420GHz-2.4835GHz band; the so-called WIFI 5.2G band refers to 5.15GHz-5.35GHz; the so-called 5.8G band refers to 5.725GHz GHz-5.875GHz; the so-called GPS L5 frequency band refers to 1.17GHz±5MHz.

If the first filtering unit 321 and the second filtering unit 322 are not present, the GPS L1 frequency band, the WIFI 5.2G frequency band, and the WIFI 5.8G frequency band in the first antenna 20 will interfere with the electromagnetic wave signals sent and received by the second antenna 30 . . In the embodiment of the present application, the first filter unit 321 is added to filter out the interference of the GPS L1 frequency band in the first antenna 20 to the second antenna 30, and the second filter unit 322 is added to filter out the first antenna. The interference of the WIFI 5.2G frequency band and the WIFI 5.8G frequency band in 20 to the second antenna 30 . Therefore, the electronic device 1 in this embodiment has high communication quality.

Specifically, in one embodiment, the first antenna 20 further includes an excitation source. For the convenience of naming, the excitation source in the first antenna 20 is called the first excitation source 220 (please refer to FIG. 5 and FIG. 6). The first excitation source 220 is electrically connected to the first branch 210 . Specifically, the first excitation source 220 is electrically connected to one end of the first branch 210 adjacent to the second slit 1221 . The first excitation source 220 is electrically connected to one end of the first branch 210 adjacent to the second slot 1221 so that the portion between the first branch 210 and the ground end of the first branch 210 is longer , so that the first antenna 20 where the first branch 210 is located has a larger frequency range. When the first antenna 20 is used to radiate an electromagnetic wave signal, the first excitation source 220 is used to generate a first excitation current, and the first branch 210 generates and radiates an electromagnetic wave signal according to the first excitation current.

Specifically, in an embodiment, the second antenna 30 further includes an excitation source. For the convenience of naming, the excitation source in the second antenna 30 is called a second excitation source 340 (please refer to FIG. 5 and FIG. 6). The second excitation source 340 is electrically connected to the second branch 310. When the isolation circuit 320 includes a first filter unit 321, the first filter unit 321 includes a first inductor L1 and a first capacitor C1. One end of the first inductor L1 is grounded, and the other end of the first inductor L1 is electrically connected to the output end of the second excitation source 340 through the first capacitor C1.

The first filtering unit 321 is also called a band-stop filtering unit or a band-stop filtering network. In one embodiment, when the second excitation source 340 is electrically connected to the second branch 310 , the second excitation source 340 is electrically connected to an end of the second branch 310 adjacent to the second slit 1221 .

In an embodiment, the second antenna 30 further includes an excitation source. For the convenience of naming, the excitation source in the second antenna 30 is referred to as a second excitation source 340 . The second excitation source 340 is electrically connected to the second branch 310 . When the isolation circuit 320 includes the second filter unit 322, the second filter unit 322 includes a second capacitor C2, one end of the second capacitor C2 is electrically connected to the second excitation source 340, the second The other end of the capacitor is connected to ground.

In an embodiment, the electronic device 1 further includes an impedance matching unit 330 , and the impedance matching unit 330 is located in the second antenna 30 . The impedance matching unit 330 includes a third capacitor C3. The third capacitor C3 is electrically connected to the second excitation source 340 and the second branch 310 , and the impedance matching unit 330 is used for matching the output impedance of the second excitation source 340 and the input impedance of the second branch 310 .

The impedance matching unit 330 is used to match the output impedance of the second excitation source 340 and the input impedance of the second branch 310, so as to improve the transmission and reception efficiency of the electromagnetic wave signal of the second branch 310 and reduce the The energy loss when the second branch 310 transmits and receives the electromagnetic wave signal.

In the schematic diagram of this embodiment, the isolation circuit 320 includes the first filter unit 321 and the second filter unit 322, and the second antenna 30 includes the impedance matching unit 330 as an example for illustration. Understandably, in other embodiments, the second antenna 30 may include any one or both of the first filtering unit 321 in the isolation circuit 320, the second filtering unit 322 in the isolation circuit 320, and the impedance matching circuit a combination of.

When the second antenna 30 operates in the second frequency band, and the second frequency band includes the GPS L5 frequency band, the length range of the second branch 310 is 17mm±2mm, and the value of the first inductance L1 is 10nH± 2nH, the value of the first capacitor C1 is 1pF±0.5pF, the value of the second capacitor C2 is 2.7pF±0.5pF, and the value of the third capacitor C3 is 1pF±0.5pF.

The first antenna 20 will be introduced in conjunction with the electronic device 1 provided in any of the above examples. Please refer to FIG. 8 , which is a schematic diagram of a first antenna provided by an embodiment of the present application. The first antenna 20 further includes a first excitation source 220 and an adjustment circuit 230 . The first excitation source 220 is electrically connected to the adjustment circuit 230 to the first branch 210 , and the adjustment circuit 230 is used to adjust the resonant frequency of each frequency band in the first frequency band in which the first antenna 20 operates , at least one of resonance depth, frequency offset, and impedance matching when the first antenna 20 operates in various frequency bands.

In one embodiment, the adjustment circuit 230 includes a first adjustment sub-circuit 231 and a second adjustment sub-circuit 232 . The first adjustment sub-circuit 231 is used to adjust the impedance matching between the WIFI 5.2GHz frequency band and the WIFI 5.8GHz frequency band. The second adjustment sub-circuit 232 is used to adjust the impedance matching between the GPS L1 frequency band and the WIFI 2.4 GHz frequency band.

In one embodiment, the adjustment circuit 230 includes a third adjustment sub-circuit 233 . The third adjustment sub-circuit 233 is used to adjust the resonance depth of the GPS L1 frequency band.

In one embodiment, the adjustment circuit 230 includes a fourth adjustment sub-circuit 234 . The fourth adjustment sub-circuit 234 is used to adjust the frequency offset of the GPS L1 frequency band.

In one embodiment, the adjustment circuit 230 includes a fifth adjustment sub-circuit 235 . The fifth adjustment sub-circuit 235 is used to adjust the resonance frequency and resonance depth of the WIFI 2.4GHz frequency band.

In the schematic diagram of this embodiment, the adjustment circuit 230 includes a first adjustment sub-circuit 231 , a second adjustment sub-circuit 232 , a third adjustment sub-circuit 233 , a fourth adjustment sub-circuit 234 , and a fifth adjustment sub-circuit 235 As an example to illustrate.

The adjustment circuit 230 includes a first adjustment sub-circuit 231 , a second adjustment sub-circuit 232 , a third adjustment sub-circuit 233 , a fourth adjustment sub-circuit 234 , and a fifth adjustment sub-circuit 235 . The excitation source of the first antenna 20 is connected in series with the first adjustment sub-circuit 231 , the third adjustment sub-circuit 233 , and the fifth adjustment sub-circuit 235 to the first branch 210 in sequence. The second adjustment sub-circuit 232 is electrically connected to the nodes of the third adjustment sub-circuit 233 and the first adjustment sub-circuit 231 . The fourth adjustment sub-circuit 234 is electrically connected to the nodes of the fifth adjustment sub-circuit 235 and the third adjustment sub-circuit 233 . The first adjustment sub-circuit 231 is used to adjust the impedance matching between the WIFI 5.2GHz frequency band and the WIFI 5.8GHz frequency band. The second adjustment sub-circuit 232 is used to adjust the impedance matching between the GPS L1 frequency band and the WIFI 2.4 GHz frequency band. The third adjustment sub-circuit 233 is used to adjust the resonance depth of the GPS L1 frequency band. The fourth adjustment sub-circuit 234 is used to adjust the frequency offset of the GPS L1 frequency band. The fifth adjustment sub-circuit 235 is used to adjust the resonance frequency and resonance depth of the WIFI 2.4GHz frequency band.

When the first antenna 20 operates in the first frequency band, the first frequency band includes the GPS L1 frequency band, the WIFI 2.4G frequency band, the WIFI 5.2G frequency band, and the WIFI 5.8G frequency band, and the length range of the first branch 210 is 22mm-25mm

In one embodiment, the first adjustment sub-circuit 231 includes a second inductor L2 and a fourth capacitor C4. One end of the second inductor L2 is electrically connected to the second excitation source 340 , and the other end of the second inductor L2 is electrically connected to the first branch 210 . One end of the fourth capacitor C4 is grounded, and the other end of the fourth capacitor C4 is electrically connected to the node of the second inductor L2 and the first branch 210 .

In one embodiment, the value of the second inductor L2 is 1.3nH, and the value of the fourth capacitor C4 is 0.3pF.

In one embodiment, the second adjustment sub-circuit 232 includes a third inductor L3. One end of the third inductor L3 is grounded, and the other end is electrically connected to the first branch 210 . In one embodiment, the value of the third inductance L3 is 2.2nH.

In one embodiment, the third adjustment sub-circuit 233 includes a fifth capacitor C5, one end of the fifth capacitor C5 is electrically connected to the first adjustment sub-circuit 231, and the other end of the fifth capacitor C5 is electrically connected to the first adjustment sub-circuit 231. The first branch 210 is connected. When the adjustment circuit 230 includes the fifth adjustment sub-circuit 235, one end of the third capacitor C5 is electrically connected to the first adjustment sub-circuit 231, and the other end of the fifth capacitor C5 is electrically connected to the The fifth regulation subcircuit 235 to the first branch 210 .

In one embodiment, the value of the fifth capacitor C5 is 0.5pF.

In one embodiment, the fourth adjustment sub-circuit 234 includes a fourth inductor L4. One end of the fourth inductor L4 is grounded, and the other end of the fourth inductor L4 is electrically connected to the first branch 210 . When the adjustment circuit 230 includes the third adjustment sub-circuit 233 and the fifth adjustment sub-circuit 235, one end of the fourth inductance L4 is grounded, and the other end of the fourth inductance L4 is electrically connected to the first The nodes of the third adjustment sub-circuit 233 and the fifth adjustment sub-circuit 235 .

In one embodiment, the value of the fourth inductor L4 is 17nH.

In one embodiment, the fifth adjustment sub-circuit 235 includes a fifth inductor L5 and a sixth capacitor C6. One end of the fifth inductor L5 is electrically connected to the first adjustment sub-circuit 231 , the other end of the fifth inductor L5 is electrically connected to the first branch 210 , and one end of the sixth capacitor C6 is electrically connected To the first adjustment sub-circuit 231, the other end of the sixth capacitor C6 is electrically connected to the first branch when the adjustment circuit 230 includes the third adjustment sub-circuit 233 and the fifth adjustment sub-circuit 235, and When the fifth adjustment sub-circuit 235 includes a fifth inductance L5 and a sixth capacitor C6, one end of the fifth inductance L5 is electrically connected to the third adjustment sub-circuit 233 to the first adjustment sub-circuit 231, so The other end of the fifth inductor L5 is electrically connected to the first branch 210 , and one end of the sixth capacitor C6 is electrically connected to the third adjustment sub-circuit 233 to the first adjustment sub-circuit 231 .

In one embodiment, the value of the fifth inductor L5 is 2.5nH, and the value of the sixth capacitor C6 is 0.5pF.

In the schematic diagram of this embodiment, the first adjustment sub-circuit 231 , the second adjustment sub-circuit 232 , the third adjustment sub-circuit 233 , the fourth adjustment sub-circuit 234 and the fifth adjustment sub-circuit The specific structure of the sub-circuit 235 is illustrated without taking the structures introduced in the above-mentioned embodiments as examples. It can be understood that the present application is not limited to the specific circuit structure of the above-mentioned adjustment circuit 230 and the specific structure of each of the above-mentioned adjustment sub-circuits. structure, as long as the adjustment circuit 230 can adjust the resonance frequency, resonance depth, frequency offset of each frequency band in the first frequency band in which the first antenna 20 operates, and impedance matching when the first antenna 20 operates in each frequency band At least one of them is sufficient.

Please refer to FIG. 9 together with related drawings such as FIG. 1 and FIG. 2 . FIG. 9 is a schematic cross-sectional structure diagram of an electronic device along line I-I according to another embodiment of the present application. The electronic device 1 includes a middle frame 10 , a circuit board 60 , a battery cover 40 , and a screen 50 . The middle frame 10 includes a middle frame body 110 and a frame 120 connected to the periphery of the middle frame body 110 . The middle frame body 110 includes a first surface 111 and a second surface 112 disposed opposite to each other. One side of the first surface 111 is provided with the circuit board 60 and the battery cover 40 in sequence, and one side of the second surface 112 is provided with the screen 50 . The middle frame body 110 defines a first slit 130 that communicates with the first surface 111 and the second surface 112 , and the first slit 130 corresponds to the two connected frames 120 (the first frame 121 and the second frame 122). The surface of the frame 120 facing away from the middle frame body 110 constitutes part of the appearance surface of the electronic device 1 , and one frame 120 (the second frame 122 ) of the two frames 120 has a second slit 1221 to connect all the frames 120 . The frame 120 is divided into a first part and a second part. The circuit board 60 includes a first excitation source 220 , a second excitation source 340 , and an isolation circuit 320 . The first excitation source 220 is electrically connected to one end of the first portion adjacent to the second slot 1221 , and the second excitation source 340 is electrically connected to the isolation circuit 320 to the second portion adjacent to the second slot 1221 The isolation circuit 320 is used to prevent the interference of the first antenna 20 where the first excitation source 220 is located to the second antenna 30 where the second excitation source 340 is located.

The frame 120 having the second slit 1221 is sandwiched between the screen 50 and the battery cover 40 . The surface of the frame 120 with the second slit 1221 opened away from the middle frame body 110 constitutes a part of the appearance surface of the electronic device 1 . The following description will be given by taking the second frame 122 sandwiched between the screen 50 and the battery cover 40 as an example. The surface of the second frame 122 facing away from the middle frame body 110 constitutes a part of the appearance surface of the electronic device 1 .

The so-called screen 50 refers to a component in the electronic device 1 for displaying content such as text, images, and videos. The screen 50 may be a component that only has a display function, or may be a component that integrates display and touch functions. In this embodiment, the screen 50 further includes a screen body 510 and a cover plate 520 disposed on the side of the screen body 510 away from the middle frame body 110 , and the screen body 510 is used for displaying the electronic device 1 Text, images, videos, etc. The cover plate 520 is used to protect the screen body 510 .

The material of the battery cover 40 may be non-metallic materials such as glass and ceramics. The battery cover 40 and the screen 50 are disposed on two opposite surfaces of the middle frame body 110 . The two surfaces are the two surfaces through which the first slit 130 passes.

In the present application, the second frame 122 is sandwiched between the screen 50 and the battery cover 40 , and the surface of the second frame 122 facing away from the middle frame body 110 constitutes a part of the appearance surface of the electronic device 1 . In the present application, the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 pass through the same gap on the second frame 122 , and the second frame 122 is formed from the surface of the middle frame body 110 . When a part of the appearance surface of the electronic device 1 is used, the appearance integrity of the electronic device 1 is relatively high.

Each electronic component in the first antenna 20 and each electronic component in the second antenna 30 are disposed on the circuit board 60 . For example, the first excitation source 220 , the second excitation source 340 , the isolation circuit 320 , and the adjustment circuit 230 can all be disposed on the circuit board 60 .

Next, a simulation analysis of the isolation degree of the first antenna 20 and the second antenna 30 is performed, please refer to FIG. 10 , which is a simulation diagram of the isolation degree of the first antenna and the second antenna of the present application. In this simulation graph, the abscissa is the frequency, the unit is GHz, and the ordinate is the isolation, the unit is dB. In this schematic diagram, the smaller the value of the horizontal axis, the better the isolation between the first antenna 20 and the second antenna 30; the larger the value of the horizontal axis, the better the isolation of the first antenna 20 and the second antenna The isolation of 30 is not good. In this schematic diagram, the gain at point 3 is the largest, which is -12.331dB. It can be seen that the isolation degrees of the first antenna 20 and the second antenna 30 are both less than -12dB. The isolation degree between the two antennas 30 is relatively high, and the influence of the first antenna 20 on the second antenna 30 is relatively small, and accordingly, the influence of the first antenna 20 on the second antenna 30 is relatively small.

The radiation efficiency of the first antenna 20 is simulated and analyzed below, please refer to FIG. 11 , which is a schematic diagram of the radiation efficiency of the first antenna of the present application. In this simulation graph, the abscissa is the frequency, and the unit is GHz, and the ordinate is the efficiency, and the unit is dB. In this schematic diagram, the larger the gain, the higher the radiation efficiency of the first antenna 20, and the smaller the gain, the lower the radiation efficiency of the first antenna 20. Point 1 is the radiation efficiency of GPS L1 frequency band, point 2 is the radiation efficiency of WIFI 2.4G frequency band, and point 3 is the radiation efficiency of WIFI 5.2G frequency band and WIFI 5.8G frequency band. The gains at point 1, point 2, and point 3 are all greater than -5dB. It can be seen that the first antenna 20 has higher radiation efficiency at point 1, point 2, and point 3. It can be seen that the first antenna 20 of the present application has a better communication effect.

Next, a simulation analysis of the radiation efficiency of the second antenna 30 is performed, please refer to FIG. 12 , which is a schematic diagram of the radiation efficiency of the second antenna of the present application. In this simulation figure, the abscissa is the frequency, the unit is GHz, and the ordinate is the radiation efficiency, the unit is dB. In this schematic diagram, the larger the gain, the higher the radiation efficiency of the second antenna 30, and the smaller the gain, the lower the radiation efficiency of the second antenna 30. Point 1 is the radiation efficiency of the GPS L5 frequency band, and the gain at point 1 is greater than -5dB. It can be seen that the second antenna 30 has higher radiation efficiency at point 1. It can be seen that the second antenna 30 of the present application has a better communication effect.

It can be understood that although the electronic device 1 in the foregoing embodiments of the present application includes the middle frame 10 , and the first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 The formation on the middle frame 10 is taken as an example for illustration. However, the above embodiments should not be construed as a limitation on the present application. The first branch 210 of the first antenna 20 and the second branch 310 of the second antenna 30 may also be formed on other components, for example, when the electronic 1 includes a conductive battery cover 40 (eg, Metal battery cover), the first branch 210 of the first antenna 20 and the second antenna 30 may also be formed on the battery cover 40 . The conductive battery cover 40 and the middle frame 10 are only a specific form of the casing of the electronic device 1 . Of course, the casing is not limited to the conductive battery cover 40 and the middle frame 10 in the electronic device 1, as long as the casing can form the first branch 210 of the first antenna 20 and the first The second branch 310 of the two antennas 30 is sufficient.

When the casing formed by the first branch 210 of the first antenna 20 and the first branch 310 of the second antenna 30 is the conductive battery cover 40 in the electronic device 1, and the first branch 310 The case where the casing formed by the first branch 210 of the antenna 20 and the second branch 310 of the second antenna 30 is the middle frame 10 is the same. 13-15 are described below. Specifically, please refer to FIGS. 13, 14 and 15 together. The schematic diagram of the battery cover from the inner surface; FIG. 15 is a schematic cross-sectional view along the line II-II in FIG. 13 . The housing 70 includes a main body 710 and a frame 720 connected to the periphery of the main body 710 . A second slit 1221 is also defined on the frame 720 adjacent to the slit 113 . The second slit 1221 communicates with the first slit 113 . The first slit 113 and the second slit 1221 divide the frame 720 into a first branch 210 and a second branch 310 .

Compared with the prior art, in the electronic device 1 of the present application, the casing 70 is used to form the first branch 210 and the second branch 310 , the first branch 210 is used to form the radiator of the first antenna 20 , and the second branch 310 is used The radiator of the second antenna 30 is formed, and the interference between the first antenna 20 and the second antenna 30 is isolated by the isolation circuit 320 , so as to realize the isolation between the first antenna 20 and the second antenna 30 . Therefore, the electronic device 1 of the present application can achieve more frequency band coverage in a limited space, achieve a larger bandwidth, and have higher communication performance.

When the casing 70 is a conductive battery cover 40 , the casing 70 forms an accommodation space, and the accommodation space is used for other components of the electronic device 1 , for example, the accommodation space is used to accommodate the middle frame 10 , Circuit board 60 and screen 50 and other components. Of course, the components accommodated in the accommodating space do not constitute a limitation on the housing provided by the present application. The circuit board 60 is disposed on the side of the middle frame 10 facing the battery cover 40 , and the screen 50 is disposed on the side of the circuit board 60 of the middle frame 10 . The circuits of the first antenna 20 and the second antenna 30 are both disposed on the circuit board 60 . For example, the first excitation source 220 , the second excitation source 340 , and the isolation circuit 320 are all disposed on the circuit board 60 .

Understandably, when the casing 70 is the conductive battery cover 40 , the electronic device 1 also includes various circuits and sub-circuits when the casing 70 is the middle frame 10 . Please refer to the previous description for each circuit, and will not be repeated here. When the case 70 is the conductive battery cover 40 , the relationship between the first slit 113 and the second slit 1221 compared with other components of the case 70 is the same as when the case 70 is the middle frame 10 It is the same as the previous implementation, and will not be repeated here.

It can be understood that in the specific implementation of the background technology of the present application, the first antenna 20 works in the first frequency band, and the first frequency band includes the GPS L1 frequency band, the WIFI 2.4G frequency band, the WIFI 5.2G frequency band, and the WIFI 5.8 frequency band. G frequency band, and the second antenna 30 operates in the second frequency band, and the second frequency band includes the GPS L5 frequency band as an example for illustration. The introduction of the first antenna 20 and the second antenna 30 should not be understood as Regarding the limitations of the first antenna 20 and the second antenna 30 in the present application, in other embodiments, the first antenna 20 and the second antenna 30 may also be antennas supporting other frequency bands.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Changes, modifications, substitutions, and alterations are made to the embodiments, and these improvements and modifications are also considered as the protection scope of the present application.

Claims (20)

1. An electronic device, comprising:

the middle frame comprises a middle frame body and a frame connected to the periphery of the middle frame body, a first gap penetrating through two opposite surfaces of the middle frame body is formed in the periphery of the middle frame body, a second gap is further formed in the frame adjacent to the first gap and communicated with the first gap, and the frame is divided into a first branch and a second branch by the first gap and the second gap;

the first excitation source is electrically connected with the first branch knot and used for feeding a first excitation current into the first branch knot so as to excite the first antenna, serving as a radiator, of the first branch knot to resonate in a WIFI frequency band and a GPS L1 frequency band;

the second excitation source is electrically connected with the second branch knot and used for feeding a second excitation current into the second branch knot and exciting a second antenna of which the second branch knot is used as a radiating body to resonate in a GPS L5 frequency band; and

and the isolation circuit is electrically connected with the second branch knot and is used for isolating the interference of the first antenna to the second antenna.

2. The electronic device of claim 1, wherein the WIFI frequency bands include a WIFI2.4G frequency band, an WIFI5.2G frequency band, and a WIFI 5.8G frequency band, the isolation circuit includes at least one of a first filtering unit and a second filtering unit, the first filtering unit is configured to filter interference of a GPS L1 frequency band in the first antenna to a GPS L5 frequency band of the second antenna, and the second filtering unit is configured to filter interference of a WIFI5.2G frequency band in the first antenna, and a WIFI 5.8G frequency band to a GPS L5 frequency band of the second antenna.

3. The electronic device of claim 2, wherein the first filtering unit comprises a first inductor and a first capacitor, one end of the first inductor is grounded, and the other end of the first inductor is electrically connected to the second excitation source through the first capacitor.

4. The electronic device according to claim 2, wherein the second filter unit includes a second capacitor, one end of the second capacitor is electrically connected to the second excitation source, and the other end of the second capacitor is grounded.

5. The electronic device of claim 2, further comprising an impedance matching unit, wherein the impedance matching unit comprises a third capacitor, the third capacitor is electrically connected to the second excitation source and the second antenna, and the impedance matching unit is configured to match an output impedance of the second excitation source with an input impedance of the second stub.

6. The electronic device of any of claims 1-5, further comprising a tuning circuit, wherein the first excitation source is electrically connected to the first stub through the tuning circuit, and wherein the tuning circuit is configured to tune at least one of a resonant frequency, a resonant depth, a frequency offset, and an impedance matching of the first antenna when operating in each frequency band.

7. The electronic device of claim 6, wherein the adjusting circuit comprises a first adjusting sub-circuit and a second adjusting sub-circuit, and the first adjusting sub-circuit is used for adjusting impedance matching in a WIFI5.2 GHz band and a WIFI 5.8GHz band; the second adjusting sub-circuit is used for adjusting impedance matching of a GPS L1 frequency band and a WIFI2.4GHz frequency band.

8. The electronic device of claim 7, wherein the first regulator sub-circuit comprises a second inductor and a fourth capacitor, one end of the second inductor is electrically connected to a second excitation source, the other end of the second inductor is electrically connected to the first stub, one end of the fourth capacitor is grounded, and the other end of the fourth capacitor is electrically connected to a node between the second inductor and the first stub.

9. The electronic device of claim 7, wherein the second regulator sub-circuit comprises a third inductor having one end connected to ground and another end electrically connected to the first stub.

10. The electronic device of claim 7, wherein the adjustment circuit further comprises a third adjustment sub-circuit for adjusting a depth of resonance for a GPS L1 frequency band.

11. The electronic device of claim 10, wherein the third regulation sub-circuit comprises a fifth capacitor, one end of the fifth capacitor being electrically connected to the first regulation sub-circuit, the other end of the fifth capacitor being electrically connected to the first stub.

12. The electronic device of claim 7, wherein the adjustment circuit further comprises a fourth adjustment sub-circuit to adjust frequency offset for the GPS L1 frequency band.

13. The electronic device of claim 12, wherein the fourth regulator sub-circuit comprises a fourth inductor, one end of the fourth inductor being coupled to ground, the other end of the fourth inductor being electrically coupled to the first stub.

14. The electronic device of any one of claims 7-13, wherein the adjusting circuit further comprises a fifth adjusting sub-circuit, and the fifth adjusting sub-circuit is configured to adjust a resonant frequency and a resonant depth of the WIFI2.4 frequency band.

15. The electronic device of claim 14, wherein the fifth regulation sub-circuit comprises a fifth inductance and a sixth capacitance, one end of the fifth inductance is electrically connected to the first regulation sub-circuit, the other end of the fifth inductance is electrically connected to the first stub, one end of the sixth capacitance is electrically connected to the first regulation sub-circuit, and the other end of the sixth capacitance is electrically connected to the first stub.

16. An electronic device, comprising a housing, wherein the housing comprises a body and a frame connected to a periphery of the body, the body comprises a first surface and a second surface which are oppositely arranged, a first gap is formed on the periphery of the body on the surface, the first gap penetrates through the first surface and the second surface, the first gap isolates at least a portion of the frame from the body, the frame is formed with a second gap communicated with the first gap, the frame is divided into a first portion and a second portion by the first gap and the second gap, the electronic device further comprises a first excitation source, a second excitation source and an isolation circuit, the first excitation source is electrically connected to one end of the first portion adjacent to the second gap, the second excitation source is electrically connected to one end of the second portion adjacent to the second gap, the isolation circuit is used for preventing the first antenna where the first excitation source is located from interfering with the second antenna where the second excitation source is located.

17. The electronic device of claim 16, wherein the first antenna operates in a first frequency band, the first frequency band comprises a GPS L1 frequency band, a WIFI2.4G frequency band, a WIFI5.2G frequency band, and a WIFI 5.8G frequency band, the second antenna operates in a second frequency band, the second frequency band comprises a GPS L5 frequency band, the isolation circuit comprises at least one of a first filtering unit and a second filtering unit, the first filtering unit is configured to filter interference of the GPS L1 frequency band in the first antenna on the second antenna, and the second filtering unit is configured to filter interference of the WIFI5.2G frequency band and the WIFI 5.8G frequency band in the first antenna on the second antenna.

18. The electronic device according to claim 17, wherein when the isolation circuit includes a first filter unit, the first filter unit includes a first inductor and a first capacitor, one end of the first inductor is grounded, and the other end of the first inductor electrically connects the first capacitor to the output terminal of the second excitation source; when the isolation circuit includes a second filtering unit, the second filtering unit includes a second capacitor electrically connected to an output terminal of the second excitation source.

19. The electronic device of claim 16, further comprising an impedance matching unit comprising a third capacitance, the impedance matching unit electrically connecting the second excitation source and an end of the second portion adjacent to the second slot.

20. The electronic device of claim 16, further comprising a regulating circuit, wherein the regulating circuit comprises a second inductor, a fourth capacitor, a third inductor, a fifth capacitor, a fourth inductor, a fifth inductor, and a sixth capacitor, one end of the second inductor is electrically connected to the second excitation source, the other end of the second inductor is electrically connected to the fourth capacitor to ground, one end of the third inductor is electrically connected to the node of the fourth capacitor, one end of the fifth capacitor is electrically connected to the node of the fourth capacitor, the second inductor is electrically connected to the node of the fourth capacitor, the other end of the fifth capacitor is electrically connected to the fourth inductor to ground, one end of the fifth inductor is electrically connected to the node of the fourth inductor, and the other end of the fifth inductor is electrically connected to the first portion, the sixth capacitor is connected in parallel with the fifth inductor.

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