CN211743386U

CN211743386U - Antenna device and satellite terminal

Info

Publication number: CN211743386U
Application number: CN202020013626.7U
Authority: CN
Inventors: 樊际洲; 林家群
Original assignee: Guangzhou Haige Communication Group Inc Co
Current assignee: Guangzhou Haige Communication Group Inc Co
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-10-23
Anticipated expiration: 2030-01-02

Abstract

The application relates to an antenna device and a satellite terminal, wherein the antenna device is formed by laminating a first radiator, a second radiator and a coupling sheet, a first antenna metal layer is formed on one surface of the first radiator, a second antenna metal layer is formed on one surface of the second radiator, and a coupling metal layer is formed on one surface of the coupling sheet; set up the first through-hole that runs through first irradiator and first antenna metal level on the first irradiator, set up the second through-hole that runs through second irradiator and second antenna metal level on the second irradiator, set up the third through-hole that runs through the coupling piece on the coupling piece, first through-hole, two liang of mutual correspondences of second through-hole and third through-hole, the feed probe passes first through-hole, second through-hole and third through-hole carry out the electricity with the coupling metal level and are connected, thereby the receiving and dispatching of different frequency channel signals are realized to each irradiator of accessible, and increase antenna device's power path through the coupling piece, and then can be when satisfying miniaturized design, improve antenna device's work bandwidth.

Description

Antenna device and satellite terminal

Technical Field

The present application relates to the field of communications technologies, and in particular, to an antenna apparatus and a satellite terminal.

Background

With the development of communication technology, wireless communication continuously changes the life style of people, has penetrated the aspects of life, and brings convenience to production and life. Meanwhile, the demand for wireless communication technology is also increasing, especially in mobile communication. However, there are still some areas without coverage of mobile communication network, and only satellite communication can be used for information transfer. While satellite communication is used, higher requirements are put on the volume and the data transmission rate of the terminal, and the terminal is required to be small in volume and high in data transmission rate.

According to the shannon formula, under the condition of a certain signal-to-noise ratio, the communication speed can be effectively improved only by improving the working bandwidth. With the increase of the operating bandwidth of the terminal, the antenna device disposed at the terminal also needs to have a corresponding operating bandwidth to complete communication.

However, in the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the traditional antenna device is difficult to realize miniaturization and improve the working bandwidth, and has the problem that the size and the working bandwidth cannot be considered at the same time.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide an antenna device and a satellite terminal capable of increasing an operating bandwidth while being small in size.

In order to achieve the above object, in one aspect, an embodiment of the present application provides an antenna apparatus, including a first radiator, a second radiator, and a coupling patch, which are sequentially stacked;

a first antenna metal layer is formed on one surface of the first radiator facing the second radiator, and a first through hole penetrating through the first radiator and the first antenna metal layer is formed in the first radiator; a second antenna metal layer is formed on one surface, facing the coupling sheet, of the second radiator, and a second through hole penetrating through the second radiator and the second antenna metal layer is formed in the second radiator; the second through hole corresponds to the first through hole; a coupling metal layer is formed on one surface of the coupling sheet, which is far away from the second radiator, and a third through hole penetrating through the coupling sheet is formed in the coupling sheet; the third through hole corresponds to the second through hole;

further comprising: and the feed probe penetrates through the first through hole, the second through hole and the third through hole and is electrically connected with the coupling metal layer.

In one embodiment, the first radiator includes a first substrate and a first protrusion; the second radiator comprises a second substrate and a second protruding part;

the first protruding part protrudes along the plane where the first substrate is located in a direction away from the geometric center of the first substrate; the second protrusion protrudes along a plane in which the second substrate is located in a direction away from a geometric center of the second substrate.

In one embodiment, the first substrate is a PCB board; the second substrate is a PCB.

In one embodiment, the antenna further comprises a third radiator laminated between the first radiator and the second radiator;

a third antenna metal layer is formed on one surface, facing the second radiator, of the third radiator, and a fourth through hole penetrating through the third radiator and the third antenna metal layer is formed in the third radiator; the fourth through hole corresponds to the first through hole;

wherein the feed probe passes through the first through hole, the fourth through hole, the second through hole and the third through hole.

In one embodiment, the geometric center of the coupling piece is offset from the geometric center of the first radiator;

and

when the number of the coupling sheets is more than or equal to two, the geometric centers of the coupling sheets are symmetrically distributed along the geometric center of the first radiator.

In one embodiment, the antenna device further comprises a metal chassis;

one surface of the first radiator, which is far away from the second radiator, is attached to the metal base plate.

In one embodiment, a ground metal layer is formed on one surface of the first radiator away from the second radiator;

the ground metal layer contacts the metal base plate.

In one embodiment, a projection area of the first radiator in the orthogonal projection direction is greater than or equal to a projection area of the second radiator in the orthogonal projection direction.

In one embodiment, the first radiator is a square radiator with a cut corner; the second radiator is a square radiator with a corner cut.

In one embodiment, the coupling tab is a PCB board or a metal sheet.

On the other hand, an embodiment of the present application further provides a satellite terminal, including the antenna device in any of the above embodiments.

One of the above technical solutions has the following advantages and beneficial effects:

through the lamination arrangement of the first radiator, the second radiator and the coupling sheet, a first antenna metal layer is formed on one surface of the first radiator facing the second radiator, a second antenna metal layer is formed on one surface of the second radiator facing the coupling sheet, and a coupling metal layer is formed on one surface of the coupling sheet far away from the second radiator; meanwhile, a first through hole penetrating through the first radiator and the first antenna metal layer is formed in the first radiator, a second through hole penetrating through the second radiator and the second antenna metal layer is formed in the second radiator, a third through hole penetrating through the coupling piece is formed in the coupling piece, the first through hole, the second through hole and the third through hole correspond to each other in pairs, and the feed probe penetrates through the first through hole, the second through hole and the third through hole to be electrically connected with the coupling metal layer.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.

Fig. 1 is a first combined schematic diagram of an antenna arrangement according to an embodiment;

fig. 2 is a second combined schematic diagram of an antenna arrangement according to an embodiment;

fig. 3 is a schematic projection diagram of a first radiator and a second radiator in a front projection direction according to an embodiment;

fig. 4 is a third combined schematic diagram of an antenna arrangement according to an embodiment;

fig. 5 is a schematic view of a first structure of an antenna device according to an embodiment;

fig. 6 is a schematic diagram of a second structure of the antenna device in one embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. As used herein, the terms "formed," "a face," "stacked," "toward," "away from," and the like are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, there is provided an antenna device including a first radiator 110, a second radiator 120, and a coupling tab 130, which are sequentially stacked;

a first antenna metal layer is formed on one surface of the first radiator 110 facing the second radiator 120, and a first through hole 111 penetrating through the first radiator 110 and the first antenna metal layer is formed on the first radiator 110; a second antenna metal layer is formed on one surface of the second radiator 120 facing the coupling tab 130, and a second through hole 121 penetrating through the second radiator 120 and the second antenna metal layer is formed on the second radiator 120; the second through hole 121 corresponds to the first through hole 111; a coupling metal layer is formed on one surface of the coupling tab 130 away from the second radiator 120, and a third through hole penetrating through the coupling tab 130 is formed on the coupling tab 130; the third through hole corresponds to the second through hole 121;

further comprising: and a feeding probe 140, wherein the feeding probe 140 passes through the first through hole 111, the second through hole 121 and the third through hole and is electrically connected with the coupling metal layer.

Specifically, the first radiator 110, the second radiator 120, and the coupling tab 130 are stacked, the second radiator 120 is disposed on the first radiator 110, and the coupling tab 130 is disposed on the second radiator 120. The coupling tab 130 may be spaced apart from the second radiator 120 by a certain distance, and the coupling tab 130 and the second radiator 120 may not be in physical contact. The first radiator 110 may be attached to the second radiator 120; or the first radiator 110 and the second radiator 120 may be disposed at an interval, that is, the first radiator 110 and the second radiator 120 may be spaced apart by a certain distance, and a medium is disposed between the first radiator 110 and the second radiator 120.

The first radiator 110 includes a first radiation surface and a second radiation surface opposite to the first radiation surface, the second radiation surface faces the second radiator 120, and a first antenna metal layer is formed on the second radiation surface of the first radiator 110. The second radiator 120 includes a third radiation surface facing the first radiator 110 and a fourth radiation surface opposite to the third radiation surface, and a second antenna metal layer is formed on the fourth radiation surface of the second radiator 120. The coupling sheet 130 includes a first coupling surface and a second coupling surface opposite to the first coupling surface, the coupling sheet 130 is disposed on the fourth radiation surface, the first coupling surface faces the fourth radiation surface, and the second coupling surface is formed with a coupling metal layer.

If the direction from the coupling tab 130 to the first radiator 110 is taken as the reference direction, the coupling metal layer, the coupling tab 130, the second antenna metal layer, the second radiator 120, the first antenna metal layer, and the first radiator 110 are sequentially disposed along the reference direction.

The first radiator 110 and the first antenna metal layer form a first antenna, the second radiator 120 and the second antenna metal layer form a second antenna, the communication frequency band of the first antenna is different from the communication frequency band of the second antenna, namely the receiving and transmitting frequency band of the first antenna can be frequency band 1, the receiving and transmitting frequency band of the second antenna can be frequency band 2, and the frequency band 1 is different from the frequency band 2, so that the broadening of the working bandwidth of the antenna device is realized through the design of the double-layer radiator.

The first radiator 110 is provided with a first through hole 111, and the first through hole 111 penetrates through the first radiating surface, the first radiator 110, the second radiating surface and the first antenna metal layer. The second radiator 120 is provided with a second through hole 121, and the second through hole 121 penetrates through the third radiating surface, the second radiator 120, the fourth radiating surface and the second antenna metal layer. The coupling piece 130 is provided with a third through hole, and the third through hole penetrates through the first coupling surface, the coupling piece 130 and the second coupling surface. Further, the third via may also penetrate through the coupling metal layer.

The first through hole 111, the second through hole 121 and the third through hole correspond to each other, so that the feed probe 140 can pass through the first through hole 111, the second through hole 121 and the third through hole to be electrically connected with the coupling metal layer. The feeding probe 140 may be connected to the coupling metal layer and sequentially pass through the third via, the second via 121, and the first via 111 to the outside of the first radiation plane, and one end of the feeding probe 140, which extends out of the first radiation plane, may be electrically connected to the feeding circuit.

Further, the diameters of the first through hole 111 and the second through hole 121 may be larger than the diameter of the feed probe 140, so that the feed probe 140 is prevented from being electrically connected to the first antenna metal layer or the second antenna metal layer when passing through the first through hole 111 and the second through hole 121, and the feed probe 140 is ensured to be not in contact with the first antenna metal layer or the second antenna metal layer. In one example, a via diameter of the first via 111 on the first antenna metal layer may be larger than a via diameter of the first via 111 in the first radiator 110; similarly, the via diameter of the second via 121 on the second antenna metal layer may be larger than the via diameter of the second via 121 in the second radiator 120.

The diameter of the third through hole on the first coupling surface may be greater than the diameter of the third through hole on the coupling metal layer, that is, the diameter of the third through hole gradually increases along the reference direction, and meanwhile, the diameter of the third through hole on the second coupling surface may be equal to the diameter of the feed probe 140, so that the feed probe 140 may be ensured to be electrically connected with the coupling metal layer when passing through the third through hole, and avoid contacting with the first coupling surface. In one example, the first through hole 111, the second through hole 121, and the third through hole may each be a non-metalized via.

The diameter of each through hole is set, so that the feed probe 140 is not in physical contact with the first antenna and the second antenna, and the feed probe 140 is in physical contact with the coupling sheet 130. In one example, the feed probe 140 may be a cylindrical copper rod or a square copper rod. In another example, the feed probe 140 may be fixed to the coupling metal layer by solder.

In the antenna device, the first radiator 110, the second radiator 120 and the coupling tab 130 are stacked, a first antenna metal layer is formed on one surface of the first radiator 110 facing the second radiator 120, a second antenna metal layer is formed on one surface of the second radiator 120 facing the coupling tab 130, and a coupling metal layer is formed on one surface of the coupling tab 130 away from the second radiator 120; meanwhile, the first radiator 110 is provided with a first through hole 111 penetrating through the first radiator 110 and the first antenna metal layer, the second radiator 120 is provided with a second through hole 121 penetrating through the second radiator 120 and the second antenna metal layer, the coupling tab 130 is provided with a third through hole penetrating through the coupling tab 130, the first through hole 111, the second through hole 121 and the third through hole correspond to each other two by two, and the feed probe 140 penetrates through the first through hole 111, the second through hole 121 and the third through hole to be electrically connected with the coupling metal layer, so that the receiving and transmitting of signals of different frequency bands can be realized through each radiator, and the power path of the antenna device is increased through the coupling tab 130, thereby improving the working bandwidth of the antenna device while satisfying the miniaturization design.

In one embodiment, as shown in fig. 2, the first radiator 110 includes a first substrate 113 and a first protrusion 115; the second radiator 120 includes a second substrate 123 and a second protrusion 125;

the first protrusion 115 protrudes along the plane of the first substrate 113 in a direction away from the geometric center of the first substrate 113; the second protrusion 125 protrudes along a plane in which the second substrate 123 is located, in a direction away from the geometric center of the second substrate 123.

Specifically, the first radiator 110 includes a first substrate 113 and a first protruding portion 115, and the first protruding portion 115 protrudes along a plane of the first substrate 113 in a direction away from a geometric center of the first substrate 113. Further, the number of the first protruding portions 115 may be four, each of the first protruding portions 115 protrudes toward the periphery of the first substrate 113, and the first protruding portions 115 do not overlap with each other. In one example, the first substrate 113 may be a square base, the four sides of the first substrate 113 are respectively provided with the corresponding first protruding portions 115, and each first protruding portion 115 corresponds to a midpoint of each side, so that a projection of the first radiator 110 in the orthographic projection direction may be as shown in fig. 3.

The first antenna metal layer covers the first substrate 113 and the first protruding portions 115, and when the number of the first protruding portions 115 is plural, the first antenna metal layer covers the first substrate 113 and each of the first protruding portions 115. Further, the first antenna metal layer may cover all or a portion of the second radiation surface of the first substrate 113, and/or the first antenna metal layer may cover all or a portion of the second radiation surface of the first protruding portion 115, so as to implement a copper-clad layer having a partial protrusion in the orthogonal direction of the first radiator 110.

Similarly, the second radiator 120 may include a second substrate 123 and a second protruding portion 125, and the second protruding portion 125 protrudes along a plane in which the second substrate 123 is located, in a direction away from the geometric center of the second substrate 123. Further, the number of the second protrusions 125 may be four, each of the second protrusions 125 protrudes toward the periphery of the first substrate 113, and the second protrusions 125 do not overlap with each other. In one example, the second substrate 123 may be a square base, corresponding second protruding portions 125 are respectively disposed on each side of the second substrate 123, and a projection of the second radiator 120 in the orthographic projection direction may be as shown in fig. 3.

The second antenna metal layer covers the second substrate 123 and the second protruding portions 125, and when the number of the second protruding portions 125 is plural, the second antenna metal layer covers the second substrate 123 and each of the second protruding portions 125. Further, the second antenna metal layer may cover all or a portion of the second radiation plane of the second substrate 123, and/or the second antenna metal layer may cover all or a portion of the second radiation plane of the second protrusion 125, so as to implement a copper-clad layer having a partial protrusion in the orthogonal direction of the second radiator 120.

Further, the first substrate 113 and the second substrate 123 may be a PCB (Printed Circuit Board) or a metal plate.

In the antenna device, the first protruding part 115 and the second protruding part 125 are arranged, so that the size of the antenna device can be reduced, the standing ratio of the antenna device can be adjusted, and the performance index of the antenna device can be improved.

Specifically, the first and second substrates 123 may each be a PCB board. Copper is respectively coated on the second radiation surface, the fourth radiation surface and the second coupling surface, so that the antenna metal layer and the coupling metal layer are arranged. Further, the third radiation surface may be free of a copper clad layer, i.e., the third radiation surface may be treated without copper.

In the antenna device, the PCB is used as the first substrate and the second substrate, so that the first substrate and the second substrate have high dielectric constants, and the size of the antenna device can be further reduced.

In one embodiment, as shown in fig. 4, the antenna further includes a third radiator 150 stacked between the first radiator 110 and the second radiator 120;

a third antenna metal layer is formed on one surface of the third radiator 150 facing the second radiator 120, and a fourth through hole 151 penetrating through the third radiator 150 and the third antenna metal layer is formed on the third radiator 150; the fourth through hole 151 corresponds to the first through hole 111;

wherein the feeding probe 140 passes through the first through hole 111, the fourth through hole 151, the second through hole 121, and the third through hole.

Specifically, the antenna device further includes a third radiator 150, the third radiator 150 is disposed between the first radiator 110 and the second radiator 120, and the coupling tab 130, the second radiator 120, the third radiator 150 and the first radiator 110 are sequentially stacked along the reference direction. Further, the number of the third radiators 150 may be one or more, and when the number of the third radiators 150 is plural, each of the third radiators 150 is sequentially stacked between the first radiator 110 and the second radiator 120. For example, when the number of the third radiators 150 is 2, the coupling tab 130, the second radiator 120, any one of the third radiators 150, another one of the third radiators 150, and the first radiator 110 are sequentially stacked in the reference direction.

The third radiator 150 includes a fifth radiation surface facing the first radiator 110 and a sixth radiation surface facing the second radiator 120, and the sixth radiation surface is opposite to the fifth radiation surface. And a third antenna metal layer is formed on the sixth radiation surface, and further, the fifth radiation surface can be processed without copper.

The third radiator 150 and the third antenna metal layer form a third antenna. The first antenna, the second antenna and the third antenna can respectively realize the receiving and transmitting of signals of different frequency bands. When the number of the third radiators 150 is multiple, a third antenna metal layer is formed on the sixth radiation surface of each third radiator 150, so as to form multiple third antennas. Each third antenna can be used for receiving and transmitting signals of different frequency bands.

The third radiator 150 is provided with a fourth through hole 151, the fourth through hole 151 penetrates through the fifth radiation surface, the third radiator 150, the sixth radiation surface and the third antenna metal layer, and the first through hole 111, the second through hole 121, the third through hole and the third through hole correspond to each other two by two, so that the feed probe 140 can sequentially pass through the third through hole, the second through hole 121, the fourth through hole 151 and the first through hole 111 to extend out of the first radiation surface.

Further, the third radiator may include a third base and a third protruding portion, where the third protruding portion protrudes along a plane where the third base is located, in a direction away from a geometric center of the third base.

In the antenna device, the third radiator 150 and the third antenna metal layer are disposed, so that the communication frequency band of the antenna device can be increased, and the operating bandwidth of the antenna device can be further improved.

In one embodiment, the geometric center of the coupling tab 130 is offset from the geometric center of the first radiator 110;

and

when the number of the coupling tabs 130 is greater than or equal to two, the geometric centers of the coupling tabs 130 are symmetrically distributed along the geometric center of the first radiator 110.

Specifically, the number of the coupling tabs 130 may be 1 or more, when the number of the coupling tabs 130 is 1, the geometric center of the coupling tabs 130 is offset from the geometric center of the first radiator 110, and when the number of the coupling tabs 130 is more than one, the geometric center of each coupling tab 130 is offset from the geometric center of the first radiator 110, and the geometric centers of the coupling tabs 130 are centrosymmetric along the geometric center of the first radiator 110, so as to implement the circular polarization antenna. Further, when the number of the coupling tabs 130 is plural, the number of the coupling tabs 130 may be 2 or 4.

In one example, when the number of the coupling tabs 130 is 2, the structural diagram of the antenna device may be as shown in fig. 5.

In the antenna device, the circular polarization antenna may be implemented by disposing the geometric center of the coupling tab 130 to be offset from the geometric center of the first radiator 110.

In one embodiment, the antenna arrangement further comprises a metal chassis 160;

one surface of the first radiator 110 away from the second radiator 120 is attached to the metal base 160.

Specifically, the antenna device further includes a metal substrate 160 attached to the first radiator 110, and specifically, the first radiation surface of the first radiator 110 is attached to the metal substrate 160, so that the antenna device may be grounded. Further, the first radiation surface may wholly or partially abut the metal base plate 160. When the first radiating surface is partially attached to the metal base plate 160, the first radiating surface is spaced from the metal base plate 160 by a maximum linear distance between the first radiating surface and the metal base plate 160.

It should be noted that the spacing distance between the first radiator 110 and the second radiator 120 and the spacing distance between the first radiator 110 and the metal substrate 160 may be equal or different. In one example, a block diagram of an antenna apparatus may be as shown in fig. 6.

In the antenna device, the metal substrate 160 and the first radiator 110 are attached to the surface away from the second radiator 120, so that the antenna device can be grounded, and the stability of the antenna device for transmitting and receiving signals is improved.

In one embodiment, a ground metal layer is formed on a surface of the first radiator 110 away from the second radiator 120;

the grounding metal layer contacts the metal base plate 160.

Specifically, a ground metal layer is formed on the first radiating surface of the first radiator 110, and the ground metal layer contacts the metal base plate 160, so that the distance between the radiator and the ground (reference surface) can be kept stable, and the stability of signal transceiving of the antenna device can be improved. Further, the ground metal layer may be formed by disposing a copper foil on the first radiation surface of the first radiator 110.

The first through hole 111 is disposed through the ground metal layer, the first radiating surface, the first radiator 110, the second radiating surface and the first antenna metal layer, and further, a diameter of the through hole of the first through hole 111 on the ground metal layer may be larger than a diameter of the feed probe 140, so as to avoid a physical contact between the feed probe 140 and the ground metal layer.

In the antenna device, the ground metal layer is formed on the surface of the first radiator 110 away from the second radiator 120, and the ground metal layer contacts the metal substrate 160, so that the distance between the radiator and the ground (reference surface) is kept stable, and the stability of signal transmission and reception of the antenna device is improved.

In one embodiment, the projection area of the first radiator 110 in the orthogonal projection direction is greater than or equal to the projection area of the second radiator 120 in the orthogonal projection direction.

Specifically, the side length (or the circumference) of the first radiator 110 may be greater than or equal to the side length (or the circumference) of the second radiator 120, and the reference direction is the projection direction of the projection line, so that the projection area of the first radiator 110 in the orthogonal projection direction is greater than or equal to the projection area of the second radiator 120 in the orthogonal projection direction.

In one embodiment, the first radiator 110 is a square radiator with cut corners; the second radiator 120 is a square radiator having a chamfer.

Specifically, the first radiator 110 is a square radiator with a cut angle, the second radiator 120 is a square radiator with a cut angle, that is, a projection of the first substrate 113 in the orthogonal projection direction is a square, and a projection of the second substrate 123 in the orthogonal projection direction is a square.

It should be noted that the first radiator 110 and the second radiator 120 do not necessarily have a corner cut; the first radiator 110 and the second radiator 120 are not necessarily square radiators, and it is within the scope of the present application that the radiators and the coupling tab 130 have other shapes or one of them has other shapes. Meanwhile, the chamfer of the first radiator 110 and the chamfer of the second radiator 120 are not necessarily identical.

In one embodiment, the coupling tab 130 is a PCB board or a metal sheet.

Specifically, when the coupling tab 130 is a PCB board, the coupling tab 130 may be a single-layer PCB and may be etched from a double-sided PCB. The second coupling surface is coated with copper, so that the coupling metal layer can be arranged. Further, the first coupling surface may be provided with a copper-clad layer, or may be processed without copper.

When the coupling tab 130 is a metal sheet, a dielectric may be disposed between the coupling tab 130 and the second radiator 120, and the dielectric may be air or a support structure, so as to prevent the coupling tab 130 from being attached to the second radiator 120.

In one embodiment, there is provided a satellite terminal comprising an antenna arrangement as in any of the above embodiments.

Specifically, the satellite terminals include, but are not limited to, a beidou terminal, a GPS (Global Positioning System) terminal, a GLONASS (Global NAVIGATION SATELLITE SYSTEM) terminal, and a galileo satellite terminal.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An antenna device is characterized by comprising a first radiator, a second radiator and a coupling sheet which are sequentially stacked;

a first antenna metal layer is formed on one surface, facing the second radiator, of the first radiator, and a first through hole penetrating through the first radiator and the first antenna metal layer is formed in the first radiator; a second antenna metal layer is formed on one surface, facing the coupling sheet, of the second radiator, and a second through hole penetrating through the second radiator and the second antenna metal layer is formed in the second radiator; the second through hole corresponds to the first through hole; a coupling metal layer is formed on one surface, far away from the second radiator, of the coupling sheet, and a third through hole penetrating through the coupling sheet is formed in the coupling sheet; the third through hole corresponds to the second through hole;

further comprising: a feed probe passing through the first, second, and third vias and electrically connected to the coupling metal layer.

2. The antenna device according to claim 1, wherein the first radiator includes a first substrate and a first protruding portion; the second radiator comprises a second substrate and a second protruding part;

the first protruding part protrudes along the plane of the first substrate in a direction away from the geometric center of the first substrate; the second protrusion protrudes along a plane in which the second substrate is located in a direction away from a geometric center of the second substrate.

3. The antenna device according to claim 2, wherein the first substrate is a PCB board; the second substrate is a PCB.

4. The antenna device according to claim 1, further comprising a third radiator laminated between the first radiator and the second radiator;

wherein the feed probe passes through the first through hole, the fourth through hole, the second through hole, and the third through hole.

5. The antenna device of claim 1, wherein a geometric center of the coupling tab is offset from a geometric center of the first radiator;

and

when the number of the coupling pieces is larger than or equal to two, the geometric centers of the coupling pieces are symmetrically distributed along the geometric center of the first radiator.

6. The antenna device according to any of claims 1 to 5, characterized in that the antenna device further comprises a metal chassis;

one surface of the first radiating body, which is far away from the second radiating body, is attached to the metal base plate.

7. The antenna device according to claim 6, wherein a ground metal layer is formed on a surface of the first radiator away from the second radiator;

the ground metal layer contacts the metal chassis.

8. The antenna device according to any one of claims 1 to 5, wherein a projected area of the first radiator in the orthogonal projection direction is greater than or equal to a projected area of the second radiator in the orthogonal projection direction.

9. The antenna device according to any of claims 1 to 5, wherein the first radiator is a square radiator having a corner cut; the second radiator is a square radiator with a corner cut.

10. The antenna device according to any of claims 1 to 5, wherein the coupling tab is a PCB board or a metal sheet.

11. A satellite terminal, characterized in that it comprises an antenna device according to any one of claims 1 to 10.