WO2024001072A1

WO2024001072A1 - Antenna module, antenna array, and electronic device

Info

Publication number: WO2024001072A1
Application number: PCT/CN2022/139351
Authority: WO
Inventors: 张帅; 白婵; 宋子璇; 韦豪; 钟永卫; 顾亮
Original assignee: 西安电子科技大学; Oppo广东移动通信有限公司
Priority date: 2022-06-30
Filing date: 2022-12-15
Publication date: 2024-01-04
Also published as: CN117374571A

Abstract

The present application provides an antenna module, an antenna array, and an electronic device. The antenna module comprises a radiation unit, a coupler, a first feed member, and a second feed member; the radiation unit comprises a pair of first radiation arms and a pair of second radiation arms; the coupler receives an original radio-frequency signal inputted by a feed source, and according to the original radio-frequency signal, outputs first and second radio-frequency signals having the same amplitude and a phase difference of 90°; the first feed member comprises a first transmission portion and a first feed portion which are connected in a bent manner; the first transmission portion is connected to the coupler to receive the first radio-frequency signal; the first feed portion couples and feeds the pair of first radiation arms; the second feed member comprises a second transmission portion and a second feed portion which are connected in a bent manner; the second transmission portion is spaced apart from the first transmission portion, and is connected to the coupler to receive the second radio-frequency signal; and the second feed portion couples and feeds the pair of second radiation arms. The antenna module can transmit and receive a circularly polarized electromagnetic wave signal, and thus has good communication performance when communicating with a circularly polarized satellite.

Description

Antenna modules, antenna arrays and electronic equipment

This application claims priority to an earlier application with application number 202210762074.3, which was submitted on June 30, 2022 and is titled "Antenna Modules, Antenna Arrays and Electronic Equipment". The contents of the above-mentioned earlier application are incorporated herein by reference. This book.

Technical field

This application relates to the field of electronic technology, and specifically to an antenna module, an antenna array and an electronic device.

Background technique

With the development of communication technology, electronic devices with antenna modules to implement communication functions are increasingly used. However, in the related art, when an antenna module provided in an electronic device communicates with a circularly polarized satellite, its performance will decrease. Therefore, how to ensure the performance of the antenna module has become a technical problem that needs to be solved.

Contents of the invention

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

The radiation unit includes a pair of first radiating arms and a pair of second radiating arms;

A coupler, the coupler is used to receive the original radio frequency signal input from the feed source, and output a first radio frequency signal and a second radio frequency signal with the same amplitude and a phase difference of 90° according to the original radio frequency signal;

The first power feeding part includes a first transmission part and a first power feeding part connected by bending. The first transmission part is connected to the coupler to receive the first radio frequency signal. The first power feeding part is used for The pair of first radiating arms couple the feed; and

The second power feeding member includes a second transmission part and a second power feeding part connected by bending. The second transmission part is spaced apart from the first transmission part. The second transmission part is connected to the coupler to A second radio frequency signal is received, and the second feeding part is used to couple and feed the pair of second radiating arms.

In a second aspect, the present application provides an antenna array, which includes a plurality of antenna modules as described in the first aspect, wherein two adjacent antenna modules are coupled to each other to form a tight Coupled array antenna.

In a third aspect, this application provides an electronic device. The electronic device includes a device body and an antenna module as described in the first aspect. The antenna module is carried on the device body; or the electronic device includes The device body and the antenna array according to the second aspect, the antenna array is carried on the device body.

Description of drawings

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

Figure 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

Figure 2 is a three-dimensional exploded schematic view of the electronic device in Figure 1;

Figure 3 is a schematic diagram of an antenna array provided in an embodiment;

Figure 4 is a schematic three-dimensional structural diagram of an antenna module provided by an embodiment of the present application;

Figure 5 is a perspective view of a partial structure of the antenna module in Figure 4;

Figure 6 is a three-dimensional exploded schematic view of the antenna module in Figure 5;

Figure 7 is a top view of the antenna module shown in Figure 5;

Figure 8 is a schematic diagram of the coupler, the first power feeding element and the second power feeding element in Figure 6;

Figure 9 is an exploded schematic view of the coupler, the first feeder and the second feeder in Figure 8;

Figure 10 is a schematic diagram of the structure in Figure 8 from another perspective;

Figure 11 is a side view of the antenna module shown in Figure 5 from one perspective;

Figure 12 is a side view of the antenna module shown in Figure 5 from another perspective;

Figure 13 is a three-dimensional schematic diagram of an antenna array provided by an embodiment of the present application;

Figure 14 is a top view of the antenna array in Figure 13;

Figure 15 is a schematic diagram of the antenna array in Figure 13 with the insulating dielectric layer removed;

Figure 16 is an enlarged schematic diagram of position I in Figure 14;

Figure 17 is an enlarged schematic diagram of position II in Figure 14;

Figure 18 is a schematic structural diagram of the second coupling patch in Figure 17;

Figure 19 is an enlarged schematic diagram of III in Figure 14;

Figure 20 is an enlarged schematic diagram of IV in Figure 14;

Figure 21 is a schematic structural diagram of the fourth coupling patch in Figures 19 and 20;

Figure 22 is a schematic diagram of the simulation results of the standing wave ratio of the antenna module feed port;

Figure 23 is a schematic diagram of the antenna module axial ratio simulation results;

Figure 24 shows the gain pattern of the E-plane and H-plane of the antenna module at the highest operating frequency of 43GHz;

Figure 25 shows the gain pattern of the E-plane and H-plane of the antenna module at the lowest operating frequency of 24GHz;

Figure 26 shows the maximum radiation pattern changing with frequency when the array antenna scanning angle is 0°;

Figure 27 shows the maximum radiation pattern of the array antenna as the angle changes when the scanning angle is 0° at the highest operating frequency of 43GHz;

Figure 28 shows the maximum radiation pattern of the array antenna as the angle changes when the scanning angle is 60° at the highest operating frequency of 43GHz;

Figure 29 shows the maximum radiation pattern of the array antenna as the angle changes when the scanning angle is 0° at the lowest operating frequency of 24GHz;

Figure 30 shows the maximum radiation pattern of the array antenna as a function of angle when the scanning angle is 60° at the lowest operating frequency of 24GHz.

Detailed ways

In a first aspect, an embodiment of the present application provides an antenna module, which includes:

Wherein, the first feeding part includes:

A first sub-feeding part connected to the first transmission part, the first sub-feeding part being spaced apart from and coupled to one of the pair of first radiating arms;

A first sub-connection part has one end connected to the first sub-feeding part; and

A second sub-feeding part is connected to the other end of the first sub-connection part, and the second sub-feeding part is spaced apart from and coupled to the other one of the pair of first radiating arms;

The first power feeding element also includes:

A first coupling part is connected to the first transmission part, and the first coupling part is disposed adjacent to the first radiating arm compared to the first sub-feed part, and the first coupling part is connected to the first transmission part. The one of the pair of first radiating arms is spaced apart and coupled.

Wherein, the first sub-feeding part is separated from the one of the pair of first radiating arms by a first distance; the second sub-feeding part is separated from the one of the pair of first radiating arms. The other is separated by a second distance, wherein the second distance is equal to the first distance.

Wherein, the second feeding part includes:

A third sub-feeding part is connected to the second transmission part, and the third sub-feeding part is spaced apart from and coupled to one of the pair of second radiating arms;

The second sub-connection part has one end connected to the third sub-feeding part and is cross-insulated with the first sub-connection part; and

a fourth sub-feeding part connected to the other end of the second sub-connection part, the fourth sub-feeding part being spaced apart from and coupled to the other one of the pair of second radiating arms;

The second feeder also includes:

A second coupling part is connected to the second transmission part, and the second coupling part is disposed adjacent to the second radiating arm compared to the third sub-feed part, and the second coupling part is connected to the second transmission part. The one of the pair of second radiating arms is spaced apart and coupled.

Wherein, the second sub-connection part includes:

a first connection section, the first connection section is connected to the third sub-feeding part;

a second connection section, the second connection section is electrically connected to the first connection section and arranged in different layers, and the second connection section and the first sub-connection portion are cross-insulated; and

A third connection section, the third connection section is electrically connected to the second connection section and the fourth sub-feeding section, and the first connection section, the third connection section and the first sub-feeding section are electrically connected. The connection parts are set on the same layer.

Wherein, the first sub-feeding part, the second sub-feeding part, the third sub-feeding part and the fourth sub-feeding part are arranged on the same layer, and the pair of first radiating arms It is arranged on the same layer as the pair of second radiating arms.

Wherein, the coupler includes:

The first piece, the first piece is electrically connected to the first power feeding member and is used for outputting the first radio frequency signal to the first power feeding member;

a second piece, the second piece is stacked and spaced apart from the first piece, and is coupled with the first piece; the second piece is electrically connected to the second feed piece to output the third two radio frequency signals to the second feeder;

A first conductive layer, the first conductive layer is located on a side of the first piece and the second piece adjacent to the first power feeding piece and the second power feeding piece, the first conductive layer has A first through hole and a second through hole, the first transmission part is provided in the first through hole, and the second transmission part is provided in the second through hole; and

A second conductive layer is located on a side of the first piece and the second piece away from the first power feeding piece and the second power feeding piece.

Wherein, the antenna module meets at least one of the following conditions:

The first radiating arm includes a first main radiating arm and a first conductive patch. The first conductive patch is located between the first main radiating arm and the first conductive layer. The first conductive patch The piece is coupled and connected to the first main radiating arm, and the first conductive patch is connected to the first conductive layer;

The second radiating arm includes a second main radiating arm and a second conductive patch. The second conductive patch is located between the second main radiating arm and the first conductive layer. The second conductive patch The piece is coupled and connected to the second main radiating arm, and the second conductive patch is connected to the first conductive layer.

In a second aspect, embodiments of the present application provide an antenna array, wherein the antenna array includes a plurality of antenna modules distributed in the array as described in the first aspect or any one of the first aspects, wherein two adjacent The antenna modules are coupled to each other to form a tightly coupled array antenna.

Wherein, the first radiating arm includes a first main radiating arm, the first main radiating arm includes a first main radiating patch and a first coupling patch arranged at intervals, and the first coupling patch is disposed on the The first main radiating patch is on the side away from the center of the antenna module, and the first coupling patch is coupled to the first main radiating patch; the second radiating arms in different antenna modules are opposite to each other. adjacent and coupled to each other.

Wherein, the first main radiation patch has a first edge, and the first edge is provided with a first notch; the first coupling patch has a second edge, and the second edge is opposite to the first edge. Arranged at intervals, the second edge is provided with a second notch, and the second notch is at least partially opposite to the first notch;

The first main radiating arm further includes a second coupling patch, and the second coupling patch is disposed in the receiving space formed by the first notch and the second notch.

Wherein, the second coupling patch includes:

a first coupling branch, the first coupling branch faces the first notch and is coupled with the first coupling patch;

a second coupling branch, the second coupling branch faces the second notch and is coupled with the second coupling patch; and

A connecting branch connects the first coupling branch and the second coupling branch.

Wherein, the second radiating arm includes a second main radiating arm, the second main radiating arm includes a second main radiating patch, and the second radiating arm located at the edge of the antenna array also includes a third coupling patch, so The third coupling patch is spaced apart from and coupled to the second main radiating patch in the second radiating arm located at the edge of the antenna array, and the third coupling patch is located away from the second main radiating patch. The side of the center of the antenna module.

Wherein, the second main radiation patch has a third edge, the third edge has a third notch, and the third notches of two adjacent second main radiation patches in different antenna modules are at least partially facing each other. ;

The third coupling patch has a fourth edge, and the fourth edge has a fourth notch. The fourth notch is at least the same as the third notch of the second main radiating patch located in the second radiating arm at the edge of the antenna array. Partially facing;

The antenna module also includes a plurality of fourth coupling patches, the fourth coupling patches are disposed in the receiving space formed by the third gaps of the two adjacent second main radiation patches, and the fourth coupling patches The coupling patch is also disposed in the receiving space formed by the third notch and the fourth notch.

In a third aspect, embodiments of the present application provide an electronic device, wherein the electronic device includes a device body and the first aspect or the antenna module described in any one of the first aspects, and the antenna module is carried on the Device body; alternatively, the electronic device includes a device body and an antenna array as described in the second aspect or any one of the second aspects, and the antenna array is carried on the device body.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Furthermore, reference in this application to an "embodiment" or "implementation" means that a particular feature, structure or characteristic described in connection with the example or implementation may be included in at least one embodiment of the application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Please refer to Figures 1 and 2. Figure 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application; Figure 2 is a three-dimensional exploded schematic view of the electronic device in Figure 1. The electronic device 1000 includes an antenna array 1 . The antenna array 1 is used to send and receive electromagnetic wave signals to implement the communication function of the electronic device 1000 . This application does not specifically limit the position of the antenna array 1 on the electronic device 1000. FIG. 1 is only an example and should not be understood as limiting the position of the antenna array 1 on the electronic device 1000.

The electronic device 1000 includes a device body 5 and an antenna array 1 . The antenna array 1 is carried on the device body 5 . The device body 5 includes, but is not limited to, a display screen 51 and a casing 52 that are covered and connected to each other. In one embodiment, the device body 5 further includes a middle frame 53 , and the display screen 51 and the housing 52 are respectively located on opposite sides of the middle frame 53 . The antenna array 1 may be disposed inside the casing 52 of the electronic device 1000 , or may be partially integrated with the casing 52 , or may be partially disposed outside the casing 52 .

The electronic device 1000 includes, but is not limited to, mobile phones, telephones, televisions, tablets, cameras, personal computers, notebook computers, vehicle-mounted equipment, headphones, watches, wearable devices, base stations, vehicle-mounted radar, customer premise equipment (Customer Premise Equipment). , CPE) and other equipment capable of sending and receiving electromagnetic wave signals. In this application, the electronic device 1000 is a mobile phone as an example. For other devices, please refer to the specific description in this application.

Please refer to Figure 2. The electronic device 1000 also includes a circuit board 7, a battery 9, a camera module, a microphone, a receiver, a speaker, a face recognition module, a fingerprint recognition module, etc. located in the storage space, which can realize the realization of a mobile phone. The basic functional components will not be described again in this embodiment. It can be understood that the above introduction to the electronic device 1000 is only an illustration of an environment in which the antenna array 1 is applied, and the specific structure of the electronic device 1000 should not be understood as limiting the antenna array 1 provided in this application.

The frequency bands supported by the antenna array 1 provided by this application include but are not limited to the 5G millimeter wave frequency band, etc. With the development of thinner, lighter and smaller electronic devices 1000, the space left for the antenna array 1 in the electronic device 1000 is becoming more and more limited. Therefore, how to realize the miniaturization and compactness of the antenna array 1 to make the antenna array 1 better It is applied in the electronic device 1000 with limited space to increase the antenna function in the electronic device 1000 and increase the application scenarios of the antenna array 1, which has become a technical problem that needs to be solved.

The specific structure of the antenna array 1 provided by this application will be illustrated below with reference to the accompanying drawings. Of course, the antenna array 1 provided by this application includes but is not limited to the following embodiments.

Please refer to FIG. 3 , which is a schematic diagram of an antenna array provided in an embodiment. For the convenience of description, taking the perspective of the antenna array 1 in FIG. 3 as a reference, the width direction of the antenna array 1 is defined as the X-axis direction, and the length direction of the antenna array 1 is defined as the Y-axis direction. The thickness direction of array 1 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other. Among them, the direction indicated by the arrow is forward.

The antenna array 1 includes a plurality of antenna modules 10 arranged in an array. This application does not specifically limit the number and arrangement of the antenna modules 10 . In this embodiment, multiple antenna modules 10 are arranged along the Y-axis direction as an example for illustration. For example, eight antenna modules 10 are arranged along a straight line to form a 1*8 array antenna. The antenna array 1 includes the above-mentioned array antenna and feed source 50, etc. Of course, multiple antenna modules 10 can also be arranged in a two-dimensional array.

The specific structure of the antenna module 10 will be described below with reference to the accompanying drawings.

Please refer to Figures 4 to 7 together. Figure 4 is a schematic three-dimensional structural diagram of an antenna module provided by an embodiment of the present application; Figure 5 is a schematic three-dimensional diagram of a partial structure of the antenna module in Figure 4; Figure 6 is a diagram A three-dimensional exploded view of the antenna module in Figure 5; Figure 7 is a top view of the antenna module shown in Figure 5. For convenience of illustration, the dielectric layer is omitted in FIG. 5 compared with FIG. 4 . The antenna module 10 includes a radiating unit 100, a coupler 200, a first feeding element 300 and a second feeding element 400. The radiation unit 100 includes a pair of first radiation arms 110 and a pair of second radiation arms 120 . The coupler 200 is configured to receive an original radio frequency signal input from the feed source 500 and output a first radio frequency signal and a second radio frequency signal with the same amplitude and a phase difference of 90° according to the original radio frequency signal. The first power feeding member 300 includes a first transmission part 310 and a first power feeding part 330 that are connected by bends. The first transmission part 310 is connected to the coupler 200 to receive a first radio frequency signal, and the first feeding part 330 is used to couple and feed the pair of first radiating arms 110 . The second power feeding member 400 includes a second transmission part 410 and a second power feeding part 430 that are bent and connected. The second transmission part 410 is spaced apart from the first transmission part 310. The second transmission part 410 is connected to the coupler 200 to receive a second radio frequency signal. The second feeding part 430 is used to The second radiating arm 120 couples the feed.

The radiating unit 100 includes two pairs of radiating arms, which are respectively a pair of first radiating arms 110 and a pair of second radiating arms 120 for convenience of naming. The pair of first radiating arms 110 may be a pair of dipole antennas. The pair of second radiating arms 120 may be a pair of dipole antennas. It can be understood that the two first radiating arms 110 of the pair of first radiating arms 110 are spaced apart along the first direction; the two second radiating arms 120 of the pair of second radiating arms 120 are spaced apart along the second direction. Arrangement, wherein the first direction intersects the second direction. In this embodiment, the first direction is perpendicular to the second direction. In the schematic diagram of this embodiment, the first direction is the X direction and the second direction is the Y direction. It can be understood that in other embodiments, the first direction may also be the Y direction, and the second direction may also be the X direction. For convenience of distinction, one of the pair of first radiating arms 110 is labeled as the first radiating arm 110a, and the other is labeled as the first radiating arm 110b. Correspondingly, one of the pair of second radiating arms 120 is labeled as the second radiating arm 120a, and the other is labeled as the second radiating arm 120b.

The first radiating arm 110 is made of conductive material, including but not limited to metal. The second radiating arm 120 is also made of conductive material, including but not limited to metal material. The first power feeding element 300 and the first radiating arm 110 are in different layers and arranged oppositely. The second power feeding member 400 and the second radiating arm 120 are in different layers and arranged oppositely. Optionally, the first radiating arm 110 and the second radiating arm 120 are both metal layers on a dielectric layer; part of the first feeder 300 is a metal layer on a dielectric layer; and the second Part of the power feed 400 is a metal layer on a dielectric layer. The first power feeding element 300 and the first radiating arm 110 are arranged along the thickness direction and are separated by a dielectric layer. The second power feeding member 400 and the second radiating arm 120 are arranged along the thickness direction and are separated by a dielectric layer. The dielectric described in this application is an insulating dielectric. The insulating dielectric has a relatively small dielectric constant and dielectric loss, and its material is not limited.

The coupler 200 is used to output a first radio frequency signal and a second radio frequency signal with the same amplitude and a phase difference of 90°.

Please refer to Figures 8 to 10. Figure 8 is a schematic diagram of the coupler, the first feeder and the second feeder in Figure 6; Figure 9 is a schematic diagram of the coupler, the first feeder and the second feeder in Figure 8. An exploded schematic diagram of the feeder; Figure 10 is a schematic diagram of the structure in Figure 8 from another perspective. The coupler 200 has a first piece 210 and a second piece 220 . The first piece 210 is electrically connected to the first power feeding member 300 and is used for outputting a first radio frequency signal to the first power feeding member 300 . The second piece 220 and the first piece 210 are stacked and spaced apart, and the second piece 220 is also coupled with the first piece 210. The second piece 220 and the second power feeding piece 400 Electrically connected to output a second radio frequency signal to the second power feeding member 400 . In this embodiment, the first piece 210 and the second piece 220 are strip lines. In this embodiment, the second piece 220 is closer to the second transmission part 420 than the first piece 210 . Wherein, the first radio frequency signal and the second radio frequency signal have the same amplitude, and have a phase difference of 90°.

In this embodiment, the first piece 210 and the second piece 220 of the coupler 200 are stacked. A dielectric is provided between the first piece 210 and the second piece 220 . The first piece 210 is coupled to the second piece 220. Therefore, the coupler 200 is also called a directional coupler. The first piece 210 has an input end and an output end. Correspondingly, the second piece 220 has an input end and an output end. One of the input end of the first piece 210 and the input end of the second piece 220 is used to receive the original radio frequency signal input by the feed source 500 (see Figure 6). The input end of the first piece 210 is connected to The other one of the input terminals in the second component 220 can be connected to an isolator to prevent external signal interference. The output end of the first piece 210 is electrically connected to the first power feeding member 300 , and the output end of the second piece 220 is electrically connected to the second power feeding member 400 .

Specifically, the feed source 500 is electrically connected to the coupler 200. The feed source 500 is used to generate the original radio frequency signal and output the original radio frequency signal to the coupler 200. The coupler 200 is used to obtain a first radio frequency signal and a second radio frequency signal with the same amplitude and a phase difference of 90° from the original radio frequency signal. Specifically, one of the input end of the first piece 210 and the input end of the second piece 220 is used to receive the original radio frequency signal input from the feed source 500, and the input end of the first piece 210 is connected to the input end of the second piece 220. The other of the input terminals of the two pieces 220 can be connected to an isolator to prevent external signal interference. It can be understood that the coupler 200 divides the original radio frequency signal into a first radio frequency signal and a second radio frequency signal. Therefore, the amplitude of the first radio frequency signal is half of the amplitude of the original radio frequency signal, correspondingly , the amplitude of the second radio frequency signal is half of the amplitude of the original radio frequency signal. This application does not limit the phase relationship between the first radio frequency signal and the original radio frequency signal, and the phase relationship between the second radio frequency signal and the original radio frequency signal, as long as the first radio frequency signal and the The second radio frequency signals only need to have the same amplitude and a phase difference of 90°. The distance between the first piece 210 and the second piece 220 of the coupler 200 is relatively close. It can be seen that the size of the coupler 200 in the thickness direction of the antenna module 10 is relatively small, thereby achieving Low profile and miniaturization of the antenna module 10 . Since the antenna module 10 has a lower cross-section and a smaller volume, when the antenna module 10 is used in an electronic device 1000, the space of the electronic device 1000 can be saved, which is beneficial to the electronic device. The device 1000 is thinner and lighter.

The antenna module 10 includes two feed elements, which are respectively named the first feed element 300 and the second feed element 400 for convenience of naming. The number of feed elements is the same as the number of pairs of radiating arms. The first power feeding component 300 is used to couple and power feed a pair of first radiating arms 110 . The second feeder 400 is used to couple and feed a pair of second radiating arms 120 .

The first feeder 300 is used to receive a first radio frequency signal and feed the first radiofrequency signal through coupling between the first feeder 300 and the pair of first radiating arms 110 to the pair of first radiating arms 110; the second feeder 400 is used to receive a second radio frequency signal, and pass the second radiofrequency signal through the second feeder 400 and the pair of third The coupling effect between the two radiating arms 120 feeds power to the pair of second radiating arms 120; since the second radio frequency signal and the first radio frequency signal have the same amplitude and a phase difference of 90°, the The antenna module 10 can transmit and receive circularly polarized electromagnetic wave signals. In other words, the antenna module 10 is a circularly polarized antenna module.

Specifically, please refer to FIG. 6 and FIG. 8 to FIG. 10 together. The first power feeding component 300 includes a first transmission part 310 and a first power feeding part 330. One end of the first transmission part 310 is electrically connected to all The coupler 200 is configured to receive the first radio frequency signal. In this embodiment, the first transmission part 310 is electrically connected to the first output end of the coupler 200 . The first feeding part 330 and the first transmission part 310 are bent and connected. Therefore, the structure of the first feeding part 330 and the first transmission part 310 is similar to an inverted "L" shape. Therefore , the first feeder 300 may also be called an L-shaped feeder or an L-shaped probe. Since the first power feeding part 330 is connected to the first transmission part 310 , the first radio frequency signal received by the first transmission part 310 can be transmitted to the first power feeding part 330 . The first feeding part 330 is spaced apart from the pair of first radiating arms 110 and coupled to each other to transmit the first radio frequency signal to the pair of first radiating arms 110 through coupling feeding. .

Correspondingly, please refer to FIG. 6 and FIG. 8 to FIG. 10 together. The second power feeding member 400 includes a second transmission part 410 and a second power feeding part 400. One end of the second transmission part 410 is electrically connected to all The coupler 200 is configured to receive the second radio frequency signal. In this embodiment, the second transmission part 410 is electrically connected to the second output end of the coupler 200 . The second feeding part 430 is bent and connected to the first transmission part 310. Therefore, the second feeding part 430 and the second transmission part 410 are similar to an inverted "L" shape. Therefore, the second feeder 400 may also be called an L-shaped feeder or an L-shaped probe. Since the second power feeding part 430 is connected to the second transmission part 410 , the second radio frequency signal received by the second transmission part 410 can be transmitted to the second power feeding part 430 . The second feed portion 430 is spaced apart from the pair of second radiating arms 120 and coupled to each other to transmit the second radio frequency signal to the pair of second radiating arms 120 through coupled feeding. .

To sum up, in the antenna module 10 in the antenna array 1 provided by the embodiment of the present application, the first feeder 300 is used to receive a first radio frequency signal and pass the first radio frequency signal through the third The coupling between a feeder 300 and the pair of first radiating arms 110 feeds power to the pair of first radiating arms 110; the second feeder 400 is used to receive a second radio frequency signal, and The second radio frequency signal is fed to the pair of second radiating arms 120 through the coupling effect between the second feeding member 400 and the pair of second radiating arms 120; due to the second radio frequency The signal has the same amplitude as the first radio frequency signal and has a phase difference of 90°. Therefore, the antenna module 10 can transmit and receive circularly polarized electromagnetic wave signals. In other words, the antenna module 10 is a circularly polarized antenna module 10 . When the antenna array 1 communicates with circularly polarized satellites, it has better communication performance.

In addition, in the antenna module 10 in the antenna array 1 provided by the embodiment of the present application, the first transmission part 310 of the first feed part 300 and the first feed part 330 are bent and connected, and the first feed part 330 couples and feeds a pair of first radiating arms 110, so that the size of the first feed element 300 in the thickness direction of the antenna module 10 is relatively small, thereby achieving a low profile and small size of the antenna array 1. change. Since the antenna array 1 has a lower cross-section and a smaller volume, when the antenna array 1 is used in an electronic device 1000, the space of the electronic device 1000 can be saved, which is beneficial to the electronic device 1000. of thinness.

Correspondingly, the second transmission part 410 of the second power feeding member 400 is bent and connected to the second power feeding part 430, and the second power feeding part 430 couples and feeds a pair of second radiating arms 120, so that The size of the second feed element 400 in the thickness direction of the antenna module 10 is relatively small, thereby achieving a low profile and miniaturization of the antenna module 10 . Since the antenna module 10 has a lower cross-section and a smaller volume, when the antenna module 10 is used in the electronic device 1000, the space of the electronic device 1000 can be saved, which is beneficial to the electronic device 1000. of thinness.

The structure of the first power feeding element 300 is described below. Referring to Figure 9, the first transmission part 310 is a solid cylinder or a hollow cylinder. The first transmission part 310 may also have other shapes, which are not limited in this application. In one embodiment, the first transmission part 310 may be formed by mechanically opening holes in the dielectric layer of the carrier substrate and filling them with conductive material. It is understood that in other embodiments, the first transmission part 310 may also be formed by laser drilling on the dielectric layer of the carrier substrate and filling it with conductive material.

The first power feeding part 330 includes a first sub-feeding part 331 , a first sub-connecting part 333 and a second sub-feeding part 332 . The first sub-feeding part 331 is connected to the first transmission part 310 . In this embodiment, specifically, the first sub-feeding part 331 is electrically connected to an end of the first transmission part 310 away from the coupler 200 . The first sub-feeding part 331 is spaced apart from and coupled to one of the pair of first radiating arms 110 (the first radiating arm 110a). One end of the first sub-connection part 333 is connected to the first sub-feeding part 331 . The second sub-feeding part 332 is connected to the other end of the first sub-connection part 333, and the second sub-feeding part 332 is connected to the other one (the first radiation arm) of the pair of first radiating arms 110. The arms 110b) are spaced apart and coupled.

The first sub-feeding part 331 has an arc-shaped side, the first sub-connecting part 333 is elongated, and the second sub-feeding part 332 has an arc-shaped side.

In this embodiment, the first sub-feeding part 331, the first sub-connecting part 333 and the second sub-feeding part 332 are arranged on the same layer. The first sub-feeding part 331 , the first sub-connecting part 333 and the second sub-feeding part 332 are arranged on the same layer, which can facilitate the preparation of the first feeding part 330 . It can be understood that in other embodiments, at least two of the first sub-feeding part 331 , the first sub-connecting part 333 and the second sub-feeding part 332 may also be provided in different layers.

It can be seen that in the embodiment of the present application, the first power feeding part 330 includes a first sub-feeding part 331 and a second sub-feeding part 332 that are electrically connected through the first sub-connection part 333. The first sub-feeding part 331 is used to couple and feed the first radiating arm 110a, and the second sub-feeding part 332 is used to couple and feed the first radiating arm 110b. Therefore, a pair of second sub-feeding parts can be realized through one first transmission member. The coupled feeding of one radiating arm 110 reduces the number of transmission parts that feed the first radiating arm 110 , which is beneficial to the miniaturization and integration of the antenna module 10 .

Optionally, please refer to FIG. 6 and FIG. 8 to FIG. 10 , the first power feeding member 300 further includes a first coupling part 320 . The first coupling part 320 is connected to the first transmission part 310 , and the first coupling part 320 is disposed adjacent to the first radiating arm 110 compared to the first sub-feeding part 331 . A coupling portion 320 is spaced apart from and coupled to one of the pair of first radiating arms 110 (the first radiating arm 110a).

In the schematic diagram of this embodiment, the first power feeding member 300 also includes the first coupling part 320 is taken as an example. It can be understood that in other embodiments, the first power feeding member 300 may not include all the first coupling parts 320 . The first coupling part 320 is described.

In this embodiment, the first coupling part 320 may be connected to the first transmission part 310 through a bonding pad. The first coupling part 320 is connected to the first transmission part 310 through the bonding pad 610, which can improve the firmness of the connection between the first coupling part 320 and the first transmission part 310.

In this embodiment, the shape of the first coupling part 320 is a circular patch as an example. In other embodiments, the shape of the first coupling part 320 may also be an ellipse or a rectangle.

The first coupling part 320 is connected to the first transmission part 310, and the first coupling part 320 is coupled to the first radiating arm 110a, which can increase the distance between the first feeder 300 and the first The coupling performance between the radiating arms 110a increases the gain, thereby increasing the bandwidth of the electromagnetic wave signals sent and received by the antenna module 10.

In this embodiment, the orthographic projection of the first coupling part 320 of the first sub-feeding part 331 falls within the range of the first sub-feeding part 331 , and the first coupling part 320 The area is smaller than the area of the first sub-feeding part 331 . When the orthographic projection of the first coupling part 320 on the first sub-feeding part 331 falls within the range of the first sub-feeding part 331 and the area of the first coupling part 320 is smaller than the area of the first sub-feeding part 331, When the area of the sub-feeding part 331 is increased, the coupling performance between the first feeding part 300 and the first radiating arm 110a can be further increased, the gain can be further increased, and the antenna mode can be further increased. The bandwidth of electromagnetic wave signals sent and received by Group 10.

Please refer to FIG. 11 , which is a side view of the antenna module shown in FIG. 5 . The first sub-feeding part 331 is separated from one of the pair of first radiating arms 110 (the first radiating arm 110a) by a first distance d1; the second sub-feeding part 332 is separated from the first radiating arm 110 by a first distance d1. The other of the pair of first radiating arms 110 (the first radiating arm 110b) is spaced apart by a second distance d2, wherein the second distance d2 is equal to the first distance d1.

The first distance d1 is equal to the second distance d2, which can make the coupling effect between the first sub-feeding part 331 and the first radiating arm 110a and the second sub-feeding part 332 and The coupling effects between the first radiating arms 110b are equal or approximately equal.

In this embodiment, the first radiating arm 110a and the first radiating arm 110b are arranged on the same layer and are located on the same plane, and the first sub-feeding part 331 and the second sub-feeding part 332 are on the same layer. The layers are arranged and located in the same plane such that the first distance is equal to the second distance. It can be understood that in other embodiments, the first sub-feeding part 331 and the second sub-feeding part 332 may also be arranged in staggered layers. Correspondingly, the first radiating arm 110a and the first The radiating arms 110b can also be arranged in staggered layers, as long as the first distance is equal to the second distance.

The structure of the second power feeding element 400 will be described in detail below. Referring to FIGS. 6 to 10 , the second transmission part 410 is a solid cylinder or a hollow cylinder. The second transmission part 410 may also have other shapes, which are not limited in this application. The second transmission part 410 may be formed by mechanically opening holes in the dielectric layer of the carrier substrate and filling them with conductive material. It is understood that in other embodiments, the second transmission part 410 may also be formed by laser drilling on the dielectric layer of the carrier substrate and filling it with conductive material.

In one embodiment, the length of the second transmission part 410 is equal to that of the first transmission part 310 , and the top surface of the first transmission part 310 (the surface close to the first radiating arm 110 ) is in contact with the first transmission part 310 . The top surface of the second transmission part 410 (the surface close to the second radiation arm 120 ) is coplanar, and the bottom surface of the first transmission part 310 (the surface away from the first radiation arm 110 ) is coplanar with the second transmission part 410 . The bottom surface of the portion 410 (the surface away from the second radiating arm 120) is coplanar. For the first transmission part 310 and the second transmission part 410 with relatively thick radial dimensions, during the preparation process, mechanical holes must be made on the dielectric layer of the supporting substrate. Due to the limitations of the processing process conditions, in order to ensure To improve the strength of the carrier substrate after mechanical drilling, the first transmission part 310 and the second transmission part 410 are usually formed in the same process. Therefore, the length of the first transmission part 310 is equal, the top surface of the first transmission part 310 and the top surface of the second transmission part 410 are coplanar, and the bottom surface of the first transmission part 310 is coplanar with the top surface of the second transmission part 410 . The bottom surfaces of the second transmission part 410 are coplanar.

The structure of the second power feeding part 430 is described below. Referring to FIG. 9 , the second power feeding part 430 includes a third sub-feeding part 431 , a second sub-connection part 433 and a fourth sub-feeding part 432 . The third sub-feeding part 431 is connected to the second transmission part 410, and is spaced apart from one of the pair of second radiating arms 120 (the second radiating arm 120a). coupling. One end of the second sub-connection part 433 is connected to the third sub-feeding part 431 and is cross-insulated with the first sub-connection part 333 . The fourth sub-feeding part 432 is connected to the other end of the second sub-connection part 433, and the fourth sub-feeding part 432 is connected to the other one (the second radiating arm) of the pair of second radiating arms 120. Arms 120b) are spaced apart and coupled.

In this embodiment, the third sub-feeding part 431 has an arc-shaped edge; the fourth sub-feeding part 432 has an arc-shaped edge.

In this embodiment, the third sub-feeding part 431 and the fourth sub-feeding part 432 are arranged on the same layer. The third sub-feeding part 431 and the fourth sub-feeding part 432 are arranged on the same layer, which can facilitate the preparation of the second feeding part 430 . It can be understood that in other embodiments, the third sub-feeding part 431 and the fourth sub-feeding part 432 may also be arranged in different layers.

It can be seen from this that in the embodiment of the present application, the second power feeding part 430 includes a third sub-feeding part 431 and a fourth sub-feeding part 432 that are electrically connected through the second sub-connection part 433. The third sub-feeding part 431 is used to couple and feed the second radiating arm 120a, and the fourth sub-feeding part 432 is used to couple and feed the second radiating arm 120b. Therefore, a pair of second transmission parts can be realized through one second transmission member. The coupled feeding of the two radiating arms 120 reduces the number of transmission parts that feed the second radiating arm 120 , which is beneficial to the miniaturization and integration of the antenna array 1 .

Optionally, the second power feeding member 400 further includes a second coupling portion 420 . The second coupling part 420 is connected to the second transmission part 410, and the second coupling part 420 is disposed adjacent to the second radiating arm 120 compared to the third sub-feeding part 431. The two coupling parts 420 are spaced apart from and coupled to one of the pair of second radiating arms 120 (the second radiating arm 120a).

In the schematic diagram of this embodiment, the second power feeding member 400 also includes the second coupling part 420 is taken as an example. It can be understood that in other embodiments, the second power feeding member 400 may not include all the second coupling parts 420 . The second coupling part 420 is described.

In this embodiment, the second coupling part 420 may be connected to the second transmission part 410 through a bonding pad. The second coupling part 420 is connected to the second transmission part 410 through the bonding pad 620, which can improve the firmness of the connection between the second coupling part 420 and the second transmission part 410.

In this embodiment, the shape of the second coupling part 420 is a circular patch as an example. In other embodiments, the shape of the second coupling part 420 may also be an ellipse or a rectangle.

The second coupling part 420 is connected to the second transmission part 410, and the second coupling part 420 is coupled to the second radiating arm 120a, which can increase the distance between the second feeder 400 and the second The coupling performance between the radiating arms 120a can thereby increase the bandwidth of the electromagnetic wave signals sent and received by the antenna module 10.

In this embodiment, the orthogonal projection of the first sub-feeding part 331 of the second coupling part 420 falls within the range of the third sub-feeding part 431 , and the second coupling part 420 The area is smaller than the area of the third sub-feeding part 431 .

Please refer to FIG. 11 and FIG. 12 together. FIG. 12 is a side view of the antenna module shown in FIG. 5 from another perspective. In this embodiment, the third sub-feed part 431 is separated from the one of the pair of second radiating arms 120 (the second radiating arm 120a) by a third distance d3; the fourth sub-feed part The electrical portion 432 is spaced apart from the other one (the second radiating arm 120b) of the pair of second radiating arms 120 by a fourth distance d4, wherein the third distance d3 is equal to the fourth distance d4; and The third distance d3 is equal to the first distance d1.

The third distance d3 is equal to the fourth distance d4, which can make the coupling effect between the third sub-feeding part 431 and the second radiating arm 120a, and the coupling effect between the fourth sub-feeding part 432 and the second radiating arm 120a. The coupling effects between the second radiating arms 120b are equal or approximately equal.

In this embodiment, the second radiating arm 120a and the second radiating arm 120b are arranged on the same layer and are located on the same plane, and the third sub-feeding part 431 and the fourth sub-feeding part 432 are on the same layer. The layers are arranged and located on the same plane such that the third distance is equal to the fourth distance. It can be understood that in other embodiments, the third sub-feeding part 431 and the fourth sub-feeding part 432 may also be arranged in staggered layers. Correspondingly, the first radiating arm 110 and the first The radiating arms 110 can also be arranged in staggered layers, as long as the third distance is equal to the fourth distance.

The detailed structure of the second sub-connection portion 433 will be described below. Please refer to FIGS. 8 and 9 together. The second sub-connection part 433 includes a first connection section 4331 , a second connection section 4332 and a third connection section 4333 . The first connection section 4331 is connected to the third sub-feeding part 431 . The second connection section 4332 and the first connection section 4331 are electrically connected and arranged in different layers, and the second connection section 4332 and the first sub-connection portion 333 are cross-insulated. The third connection section 4333 is electrically connected to the second connection section 4332 and the fourth sub-feeding part 432 , and is arranged on the same layer as the first connection section 4331 .

The first connection section 4331 , the third connection section 4333 and the first sub-connection part 333 are arranged on the same layer. The second connecting section 4332 is arranged in a different layer from the first connecting section 4331 and is arranged in a different layer from the first sub-connection portion 333 . The manner in which the second connecting section 4332 connects the first connecting section 4331 and the third connecting section 4333 can be called bridging.

The first sub-feeding part 331, the second sub-feeding part 332, the third sub-feeding part 431 and the fourth sub-feeding part 432 are arranged on the same layer, and the pair of first sub-feeding parts The radiating arm 110 is arranged on the same layer as the pair of second radiating arms 120 .

In this embodiment, the first sub-feeding part 331, the second sub-feeding part 332, the third sub-feeding part 431 and the fourth sub-feeding part 432 are arranged on the same layer, and The first radiating arm 110a, the first radiating arm 110b, the second radiating arm 120a and the fourth radiating arm b are arranged on the same layer. On the one hand, it makes the preparation of the antenna module 10 easier. On the other hand, the antenna array 1 has a lower profile.

Please continue to refer to FIGS. 4 and 6 and FIGS. 8 to 10 . In addition to the first piece 210 and the second piece 220 , the coupler 200 also includes a first conductive layer 20 and a second conductive layer 20 . Layer 30. The first conductive layer 20 is located on a side of the first piece 210 and the second piece 220 of the coupler 200 adjacent to the first power feeding member 300 and the second power feeding member 400. The layer 20 has a first through hole 20a and a second through hole 20b. The first transmission part 310 is provided in the first through hole 20a. The second transmission part 410 is provided in the second through hole 20b. . The second conductive layer 30 is located on a side of the first component 210 and the second component 220 of the coupler 200 away from the first power feeding component 300 and the second power feeding component 400 .

The first conductive layer 20 may be made of, but is not limited to, a conductive material, such as conductive metal; correspondingly, the second reference ground may be made of, but is not limited to, a conductive material, such as conductive metal. The material of the first reference ground may be the same as or different from the material of the second reference ground.

In the antenna array 1 , the first conductive layer 20 and the second conductive layer 30 are arranged oppositely along the thickness direction of the antenna array 1 . The first piece 210 and the second piece 220 of the coupler 200 are disposed between the first conductive layer 20 and the second conductive layer 30 , and the coupler 200 is connected to the first conductive layer 20 respectively. An insulating dielectric is provided between the second conductive layer 30 and the second conductive layer 30 .

The first conductive layer 20 is located on a side of the first piece 210 and the second piece 220 of the coupler 200 adjacent to the first power feeding member 300 and the second power feeding member 400. The layer 20 can reflect the energy of the radiation antenna module 100 and expand the impedance bandwidth of the antenna module 10 . The first conductive layer 20 and the second conductive layer 30 can protect the first piece 210 and the second piece 220 of the coupler 200 to prevent the first piece 210 and the second piece 220 of the coupler 200 from being damaged. The radio frequency signal transmitted by the component 220 is leaked; accordingly, external radiation can be prevented from interfering with the first component 210 and the second component 220 of the coupler 200 .

Please refer to FIG. 5 and FIG. 6 . The antenna module 10 meets at least one of the following conditions: the first radiating arm 110 includes a first main radiating arm 111 and a first conductive patch 112 . The patch 112 is located between the first main radiating arm 111 and the first conductive layer 20 . The first conductive patch 112 is coupled to the first main radiating arm 111 . The first conductive patch 112 is coupled with the first main radiating arm 111 . 112 is connected to the first conductive layer 20; the second radiating arm 120 includes a second main radiating arm 121 and a second conductive patch 122. The second conductive patch 122 is located on the second main radiating arm 121. Between the second conductive patch 122 and the first conductive layer 20 , the second conductive patch 122 is coupled to the second main radiating arm 121 , and the second conductive patch 122 is connected to the first conductive layer 20 .

When the first radiating arm 110 includes a first main radiating arm 111 and a first conductive patch 112 , the first conductive patch 112 is located between the first main radiating arm 111 and the first conductive layer 20 between. This application does not limit the number of layers of the first conductive patch 112 . For example, one layer, or multiple layers (more than or equal to two layers). When the number of layers of the first conductive patches 112 includes multiple layers, the multi-layer first conductive patches 112 are arranged at intervals along the thickness direction of the antenna array 1 (the viewing angle of this embodiment is the Z direction), and in Orthogonal projections in thickness of the antenna array 1 at least partially overlap to form capacitive coupling. The surface where the first main radiating arm 111 is located, the first conductive patch 112 and the first conductive layer 20 are sequentially arranged along the thickness direction of the antenna array 1, and the first main radiating arm 111 and An insulating dielectric is disposed between the first conductive patches 112 , and an insulating dielectric is disposed between the first conductive patches 112 and the first reference ground. The orthographic projection of the first main radiating arm 111 in the thickness direction of the antenna array 1 at least partially overlaps the orthographic projection of the first conductive patch 112 in the thickness direction of the antenna array 1, so that the The first conductive patch 112 forms capacitive coupling with the first main radiating arm 111 .

It can be understood that the first conductive patch 112 partially overlaps the first main radiating arm 111 in the thickness direction of the antenna array 1 . In other words, the orthographic projection of the first main radiation arm 111 on the plane of the first conductive patch 112 partially overlaps with the area where the first conductive patch 112 is located. Further, the first conductive patch 112 is directly opposite to the first main radiating arm 111 at one end away from the center of the antenna module 10 .

The first conductive patch 112 is coupled to the first main radiating arm 111 . The first conductive patch 112 is coupled or directly electrically connected to the first conductive layer 20 . Optionally, the first conductive patch 112 is directly electrically connected to the first conductive layer 20 . In this embodiment, the first conductive patch 112 is directly electrically connected to the first conductive layer 20 through the first coupling adjustment structure 810 .

Correspondingly, the second conductive patch 122 is coupled with the second main radiating arm 121 . The second conductive patch 122 is coupled or directly electrically connected to the first conductive layer 20 . Optionally, the second conductive patch 122 is directly electrically connected to the first conductive layer 20 . In this embodiment, the second conductive patch 122 is directly electrically connected to the first conductive layer 20 through the second coupling structure 820 .

By disposing the first conductive patch 112 between the first main radiating arm 111 and the first conductive layer 20 , the first conductive patch 112 is coupled with the first main radiating arm 111 , and the first conductive patch 112 is coupled with the first main radiating arm 111 . 112 is connected to the first conductive layer 20 to broaden the bandwidth of the antenna array 1 . In addition, in the embodiment of the present application, the first conductive patch 112 is capacitively coupled to the first main radiating arm 111, and the first conductive patch 112 is connected to the first conductive layer 20, which reasonably broadens the antenna array 1. The bandwidth also ensures that the antenna array 1 has a smaller thickness and achieves a low profile for application in the 5G millimeter wave frequency band.

By arranging the second conductive patch 122 between the second main radiating arm 121 and the first conductive layer 20 , the second conductive patch 122 is coupled with the second main radiating arm 121 , and the second conductive patch 122 is coupled with the second main radiating arm 121 . 122 is connected to the first conductive layer 20 to broaden the bandwidth of the antenna array 1 . In addition, in the embodiment of the present application, the second conductive patch 122 is capacitively coupled to the second main radiating arm 121, and the second conductive patch 122 is connected to the first conductive layer 20, which reasonably broadens the antenna array 1. The bandwidth also ensures that the antenna array 1 has a smaller thickness and achieves a low profile for application in the 5G millimeter wave frequency band.

It can be understood that the antenna module 10 includes a pair of first radiating arms 110 and a pair of second radiating arms 120. One first radiating arm 110 is equivalent to a radiating oscillator, and one second radiating arm 120 is equivalent to a radiating oscillator. , that is, one antenna module 10 includes four radiating elements. From the perspective of this embodiment, a pair of first radiating arms 110 are arranged along the X direction, that is, symmetrically arranged with respect to the Y-axis direction; a pair of second radiating arms 120 are arranged along the Y-axis direction, that is, symmetrically arranged with respect to the X-axis direction. . In other words, the four radiating elements in the antenna module 10 are centrally symmetrical. Correspondingly, the first sub-feeding part 331 , the second sub-feeding part 332 , the third sub-feeding part 431 and the fourth sub-feeding part 432 are all related to the antenna module 10 The center of the central radiating unit 100 is arranged symmetrically.

This application does not specifically limit the shapes of the first radiating arm 110 and the second radiating arm 120 . For example, the shape of the first radiating arm 110 may include but is not limited to a square, a circle, a triangle, or a shape containing a square, a circle, or a triangle. The shape of the second radiating arm 120 may include but is not limited to a square, a circle, a triangle, or a shape containing a square, a circle, or a triangle.

Optionally, please refer to Figures 5 and 6. In this embodiment, in an antenna module 10, one end of the first main radiating arm 111a close to the first main radiating arm 111b is semicircular, away from the One end of the first main radiating arm 111b is rectangular. Correspondingly, one end of the first main radiating arm 111b close to the first main radiating arm 111a is semicircular, and the end away from the first main radiating arm 111a is rectangular.

Correspondingly, in an antenna module 10, one end of the second main radiating arm 121a close to the second main radiating arm 121b is semicircular, and the end away from the second main radiating arm 121b is rectangular. Correspondingly, one end of the second main radiating arm 121b close to the second main radiating arm 121a is semicircular, and the end away from the second main radiating arm 121a is rectangular.

In this embodiment, among the plurality of antenna modules 10, the distance between two adjacent antenna modules 10 is small, and the two adjacent antenna modules 10 are coupled to each other to form a tightly coupled array antenna. In this way, the size of the antenna array 1 on the X-Y plane is relatively small, and the aperture of the close-coupled array antenna is small, which is beneficial to miniaturization of the antenna array 1 . In other embodiments, two adjacent antenna modules 10 in the antenna array 1 are not coupled to each other. This application does not limit whether two adjacent antenna modules 10 in the antenna array 1 are coupled to each other.

Generally, the mutual coupling effect between antenna modules 10 will cause the antenna performance to deteriorate. In this application, please refer to FIG. 13 . The antenna array 1 includes an array antenna formed by a plurality of antenna modules 10 . The array antenna may be a phased array antenna. The coupler 200 also includes a first conductive layer 20 . The first conductive layer 20 is located on a side of the first piece 210 and the second piece 220 of the coupler 200 adjacent to the first power feeding member 300 and the second power feeding member 400. The layer 20 has a first through hole 20a and a second through hole 20b. The first transmission part 310 is provided in the first through hole 20a. The second transmission part 410 is provided in the second through hole 20b. .

The first conductive layer 20 may be, but is not limited to, a conductive metal layer. The radiation unit 100 is coupled to the first conductive layer 20 . For the array antenna, the first conductive layer 20 is a continuous whole. The arrangement of the first conductive layer 20 not only does not affect the radiation performance of the array antenna, the first conductive layer 20 can reflect the energy of the array antenna, and the phase of the electromagnetic wave signal radiated by the array antenna is different from that of the first conductive layer. The phase of the electromagnetic wave signal reflected by the layer 20 is the same. Therefore, the energy of the electromagnetic wave signal radiated by the array antenna is superimposed on the energy of the electromagnetic wave signal reflected by the first conductive layer 20 , and its impedance bandwidth is also broadened.

The specific principle is: an infinite square array composed of several planar electric dipoles arranged closely (i.e., a wirelessly large current sheet). The upper part of the array plane is free space, and the lower part is close to a reflective plate, which is the first reflective plate. Conductive layer 20. The existence of the coupling effect between the antenna modules 10 causes the impedance of the phased array antenna to change drastically when the phased array antenna performs beam scanning, and gives infinite current sheets that are scanned on the E and H surfaces respectively. At the angle θ, the relationship between the array impedance R and the electric dipole radiation resistance R ₀ when the array is not scanning:

E surface: R/R ₀ = cosθ (1)

H surface: R/R ₀ =1/cosθ (2)

When the phased array antenna is performing beam scanning, the impedance of the phased array antenna changes drastically, so that the array impedance R of the phased array antenna when performing beam scanning is the same as the electric dipole radiation resistance R ₀ of the phased array antenna when the phased array antenna is not scanning. The range of the difference between them is relatively large, so that the range of the angle θ scanned on the E and H surfaces is also large. In this way, the phased array antenna achieves a large scanning angle on the E and H surfaces. In addition, the basic structure of the infinite current slice determines that its equivalent circuit never introduces a reactance component, only a real resistance. This special structure determines its broadband characteristics.

Millimeter wave communication has become the key to today's 5G applications due to its rich spectrum advantage. The advantage of the 5G millimeter wave array antenna 20 is: high-density and high-strength signal coverage. In the era of millimeter wave communications, broadband antennas with broadband performance will be the focus of future research. As the application of 5G millimeter wave bands becomes more and more widespread, designing tightly coupled antennas for 5G millimeter wave bands has also become a technical problem that needs to be solved. The 5G millimeter wave band covers 24.75-27.5GHz and 37-43.5GHz. As the operating frequency increases, the size of the antenna module 10 decreases. Therefore, it is necessary to implement a tightly coupled antenna design for the 5G millimeter wave band to avoid wide-band large-angle scanning. The pattern grating lobes need to break through the technical problems of miniaturization and low profile of tightly coupled antenna arrays. The general tight coupling structure is implemented by a vertical structure, and the vertical structure has the problem of being too large. For the 5G millimeter wave band, the vertical structure is no longer suitable, and the size is too large to be used in electronic equipment in a small space. Use within 1000.

Based on the above problem of how to use a tightly coupled antenna suitable for the 5G millimeter wave band, in the antenna array 1 provided by the embodiment of the present application, the radiating unit 100 is a conductive layer provided on the dielectric layer, that is, a planar structure with a small thickness. ; The first transmission part 310 of the first feeding part 300 is connected to the first feeding part 330 in a bend, and the first feeding part 330 is a pair of first radiating arms 110 coupling and feeding, therefore, the first feeding part 330 The size of the electrical component 300 in the thickness direction of the antenna module 10 is relatively small; the second transmission part 410 of the second feed component 400 is bent and connected to the second feed part 430, and the second feed part 430 is A pair of second radiating arms 120 are coupled and fed. Therefore, the size of the second feed member 400 in the thickness direction of the antenna module 10 is relatively small; such a design realizes the miniaturization of the antenna array 1. The antenna module 10 is thin in thickness, low in profile, and small in size, and can be applied to the 5G millimeter wave band, and then passes through the radiating unit 100, the first feeder 300 and the second feeder 400 of the above-mentioned design plane and the adjacent antenna modules. The tight coupling between groups 10 can realize a tight coupling antenna suitable for the 5G millimeter wave band, thereby supporting the 5G millimeter wave band, broadening the bandwidth and miniaturizing the antenna array 1, which is conducive to the application of the tightly coupled antenna of the 5G millimeter wave band in limited space. Electronic Devices 1000.

It can be understood that between the first conductive layer 20 and the radiating unit 100, between the first feeding member 300 and the radiating unit 100, and between the second feeding member 400 and the radiating unit There is an insulating dielectric layer between 100 , and the insulating dielectric layer can be a dielectric matching layer, a dielectric substrate, etc.

Optionally, the above-mentioned antenna array 1 can adopt an antenna-in-Package (AIP). The AIP technology integrates the antenna and other circuits into the same package through packaging materials and processes. Due to the good Taking into account antenna performance, cost and size.

In addition, the radiating unit 100 provided in this application is a dipole antenna. The reactance component of the dipole antenna is capacitive at low frequencies and inductive at high frequencies, and Z _L can just cancel each other out. Among them, the free space, dielectric matching layer and dielectric substrate are all represented by transmission lines, forming a transmission line network, and its equivalent impedance is expressed as Z _L . The coupling capacitance between adjacent antenna modules 10 can also offset part of the reactance component of Z _L. Through the effects of the first conductive layer 20, the dipole antenna and the coupling capacitor, the dipole antenna achieves better impedance matching within a wide frequency band, so the tightly coupled array antenna can have a wide operating bandwidth. In addition, the characteristic impedance introduced by the dielectric matching layer also has a positive impact on the overall broadband matching.

The antenna array 1 provided by this application is a tightly coupled array antenna. The distance between adjacent antenna modules 10 is small and has a relatively small size on the X-Y plane. The antenna modules 10 have mutual coupling effects and extend Antenna bandwidth; the radiating unit 100 is a planar structure with a small thickness; the first transmission part 310 of the first feed part 300 is connected to the first feed part 330 in a bend, and the first feed part 330 is a pair of A radiating arm 110 couples the feed, so the size of the first feed member 300 in the thickness direction of the antenna module 10 is relatively small; the second transmission part 410 of the second feed member 400 and the second feed The electrical portion 430 is bent and connected, and the second feed portion 430 couples and feeds the pair of second radiating arms 120 . Therefore, the size of the second feed component 400 in the thickness direction of the antenna module 10 is relatively small. Small; it can be seen that the thickness of the antenna array 1 provided by this application is smaller, achieving a low profile, promoting the miniaturization of the antenna array 1, and can also be applied to form a tightly coupled antenna suitable for the 5G millimeter wave band, by designing the radiation unit The radiating arm 11 of 100 is a dipole antenna, which can achieve good impedance matching in a wide frequency band.

In addition, each dipole arm in a conventional close-coupled antenna module 10 needs to be connected to a separate feed port, so a total of four feed ports are required, that is, the number of ports is relatively large. When the conventional tightly coupled antenna module 10 is applied to the electronic device 1000 in the 5G millimeter wave band, for example, the antenna array 1 needs to be composed of 8 antenna modules 10, then the antenna array 1 needs 32 ports. The larger number of ports in the antenna array 1 will cause the antenna array 1 to be more expensive and the module to be more complex. Due to the size limitation of the antenna array 1, the number of feed ports of the antenna array 1 is limited, for example, limited to 16 or less. Therefore, it is necessary to rationally design the feed structure of the tightly coupled antenna to overcome the problem of designing with a small number of ports.

In the antenna module 10 provided in the embodiment of the present application, the first feeding part 330 of the first feeding part 300 can feed a pair of first radiating arms 110, and the second feeding part of the second feeding part 400 The portion 430 may feed a pair of second radiating arms 120 . In this way, an antenna module 10 only needs two feed terminals (the first feed component 300 and the second feed component 400), which can be greatly improved compared to a conventional antenna that requires four feed ports. By reducing the number of feed ports, the manufacturing cost of the antenna array 1 can be reduced.

The specific structure of the radiation unit 100 of each antenna module 10 in the antenna array 1 provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. Please refer to Figures 5, 6, 13, 14 and 15 together. Figure 13 is a three-dimensional schematic view of the antenna array provided by an embodiment of the present application; Figure 14 is a top view of the antenna array in Figure 13; Figure 15 is a diagram Schematic diagram of the antenna array in 13 with the insulating dielectric layer removed. In this embodiment, a pair of first radiating arms 110 in the antenna module 10 are arranged along the width direction of the antenna array 1 (the viewing angle in FIG. 13 is the X direction), and a pair of first radiating arms 110 in the antenna module 10 The second radiating arm 120 is arranged along the length direction of the antenna array 1 (the viewing angle in FIG. 13 is the Y direction) as an example for illustration. It can be understood that the positions of the first radiating arm 110 and the second radiating arm 120 are equal. In other embodiments, a pair of first radiating arms 110 in the antenna module 10 are arranged along the antenna array. The pair of second radiating arms 120 in the antenna module 10 are arranged along the width direction of the antenna array 1 .

In this embodiment, the radiating unit 100 in the antenna module 10 includes a pair of first radiating arms 110 and a pair of second radiating arms 120 . A pair of first radiating arms 110 and a pair of second radiating arms 120 are arranged orthogonally. Capacitive coupling of the radiating units 100 between adjacent antenna modules 10 . The radiating unit 100 is also capacitively coupled with the first conductive layer 20 to form a tightly coupled array antenna.

Two adjacent antenna modules 10 are coupled to each other to form a closely coupled array antenna. Closely coupled array antennas have wider bandwidth and better gain.

In a tightly coupled array antenna, some main radiating arms of some antenna modules 10 are located in the middle. The main radiating arm located in the middle has other main radiating arms coupled to it, but some of the main radiating arms are located at the edges. other radiating arms coupled to it.

In this embodiment, a pair of first radiating arms 110 in the antenna module 10 are arranged along the width direction of the antenna array 1 , and a pair of second radiating arms 120 in the antenna module 10 are arranged along the width direction of the antenna array 1 . Taking the length direction arrangement of the antenna array 1 as an example for illustration, the second main radiating arm 121 in one antenna module 10 is arranged adjacent to the other second main radiating arm 121 in the adjacent antenna module 10. Different The second main radiating arms 121 in the antenna module 10 are coupled to each other to form a closely coupled array antenna. It should be noted that since the second radiating arms 120 in adjacent antenna modules 10 are close to each other, the coupling between the adjacent second radiating arms 120 in adjacent antenna modules 10 is relatively large; The first radiating arms 110 in adjacent antenna modules 10 are relatively far apart. Therefore, although the coupling between the first radiating arms 110 in adjacent antenna modules 10 is small, there is still coupling. It can be understood that the positions of the first radiating arm 110 and the second radiating arm 120 are equal. In other embodiments, a pair of first radiating arms 110 in the antenna module 10 are arranged along the antenna array. 1 is arranged in the length direction of 1, and a pair of second radiating arms 120 in the antenna module 10 is arranged along the width direction of the antenna array 1. Correspondingly, the first main radiating arm 111 in an antenna module 10 and Another first main radiating arm 111 in an adjacent antenna module 10 is arranged adjacently, and the first main radiating arms 111 in different antenna modules 10 are coupled to each other to form a closely coupled array antenna.

In other words, in this embodiment, some of the second main radiating arms 121 of some antenna modules 10 are located in the middle position and have other second main radiating arms 121 coupled thereto. The two main radiating arms 121 are located at the edge, and there are no other second main radiating arms 121 coupled thereto. In addition, in this embodiment, the first main radiating arm 111 in the antenna module 10 is located at the edge, and there is no first main radiating arm 111 coupled to it. It can be seen that for antenna modules 10 at different locations, the coupling environments of the first main radiating arm 111 and the second main radiating arm 121 may be different.

For a 1*8 tightly coupled array antenna, the coupling environment of all the first main radiating arms 111 in the antenna module 10 is different from the coupling environment of the second main radiating arm 121 in the middle antenna module 10 . In addition, the coupling environment of the second main radiating arms 121 located at the edges in the antenna modules 10 located at both ends is different from the coupling environment of the second main radiating arms 121 located in the middle antenna module 10 .

Please refer to Figure 16, which is an enlarged schematic diagram of position I in Figure 14. The first radiating arm 110 includes a first main radiating arm 111. The first main radiating arm 111 includes a first main radiating patch 1111 and a first coupling patch 1112 arranged at intervals. The first coupling patch 1112 Disposed on the side of the first main radiation patch 1111 away from the center of the antenna module 10, the first coupling patch 1112 is coupled to the first main radiation patch 1111; different antennas The second radiating arms 120 in the module 10 are arranged adjacently and coupled to each other.

The first main radiation arm 111 includes a first main radiation patch 1111 and a first coupling patch 1112 that are spaced apart. The first coupling patch 1112 is coupled to the first main radiation patch 1111 . The first coupling patch 1112 may be disposed coplanarly with the first main radiation patch 1111 so that the antenna array 1 has a lower profile.

The first coupling patch 1112 is disposed on a side of the first main radiation patch 1111 away from the center of the antenna module 10 . The first coupling patch 1112 and the first main radiation patch are 1111 is at least partially opposite.

In a tightly coupled array antenna, the coupling effect of the antenna module 10 located at the edge is often not as good as the coupling effect of the antenna module 10 located in the middle. In the embodiment of the present application, by arranging the first coupling patch 1112 to couple with the first main radiation patch 1111, the coupling environment of the first main radiation patch 1111 can be supplemented, and the first main radiation patch 1111 can be provided with Capacitive coupling allows the first main radiation patch 1111 located at the edge to have a relatively good coupling environment, thereby broadening the bandwidth, increasing the gain, and improving the characteristics of the antenna module 10 with the close-coupled array antenna 20 located at the edge.

Further, please refer to FIG. 17 , which is an enlarged schematic diagram of position II in FIG. 14 . The first main radiation patch 1111 has a first edge 111a, and the first edge 111a is provided with a first notch 111b. The first coupling patch 1112 has a second edge 111c. The second edge 111c is spaced apart from the first edge 111a. The second edge 111c is provided with a second notch 111d. The second notch 111d At least partially facing the first notch 111b. The first main radiating arm 111 further includes a second coupling patch 1113. The second coupling patch 1113 is disposed in the receiving space formed by the first notch 111b and the second notch 111d.

The shape of the first notch 111b includes, but is not limited to, rectangular, semicircular, etc. Compared with the first main radiation patch 1111 without the first notch 111b, in the embodiment of the present application, the first main radiation patch 1111 has the first notch 111b. This method can increase the number of the first main radiation patch 1111. The current path on the main radiation patch 1111 increases the electrical length of the first main radiation patch 1111, thereby broadening the bandwidth and increasing the gain. In addition, the first main radiation patch 1111 supports electromagnetic wave signals in a preset frequency band. Under the premise, the size of the first main radiation patch 1111 is made smaller.

In addition, the first main radiation patch 1111 has a first notch 111b, so that the shape of the first patch is generally fish-shaped. Compared with the radiation patch without the first notch 111b, the first main radiation patch 1111 provided by the embodiment of the present application has the first notch 111b. The first main radiation patch 1111 is relatively regular and can be changed. The first main radiation patch 1111 surface current path suppresses surface waves, enhances radiation effects, increases gain, and broadens bandwidth.

Correspondingly, the first coupling patch 1112 has a second notch 111d. This method can increase the current path on the first coupling patch 1112, thereby increasing the electrical length of the first coupling patch 1112. This further widens the bandwidth, increases the gain, and makes the size of the first coupling patch 1112 smaller on the premise that the first coupling patch 1112 supports electromagnetic wave signals in a preset frequency band.

The first main radiating arm 111 also includes a second coupling patch 1113. The second coupling patch 1113 is disposed in the receiving space formed by the first notch 111b and the second notch 111d, thereby increasing the The coupling capacitance between the first coupling patch 1112 and the first main radiation patch 1111 is increased, thereby enhancing the coupling between the first coupling patch 1112 and the first main radiation patch 1111.

Please refer to Figure 18, which is a schematic structural diagram of the second coupling patch in Figure 17. The structure of the second coupling patch 1113 is described in detail below. The second coupling patch 1113 includes a first coupling branch 113a, a second coupling branch 113b and a connection branch 113c. The first coupling branch 113a faces the first notch 111b and is coupled with the first coupling patch 1112. The second coupling branch 113b faces the second notch 111d and is coupled with the second coupling patch 1113. The connection branch 113c connects the first coupling branch 113a and the second coupling branch 113b. The extension direction of the first coupling branch 113a is parallel to, or approximately parallel to, the extension direction of the second coupling branch 113b.

The first coupling branch 113a may be straight or wavy. In this embodiment, the shape of the first coupling branch 113a is not limited. The extending direction of the first coupling branch 113a is the same or substantially the same as the extending direction of the first edge 111a. In this way, the coupling effect between the first coupling branch 113a and the first coupling patch 1112 is high.

The second coupling branch 113b may be straight or wavy. In this embodiment, the shape of the second coupling branch 113b is not limited. The extending direction of the second coupling branch 113b is the same or substantially the same as the extending direction of the second edge 111c. In this way, the coupling effect between the second coupling branch 113b and the first main radiation patch 1111 is better.

In the schematic diagram of this embodiment, the first coupling branch 113a, the second coupling branch 113b and the connecting branch 113c are all straight strips. It can be understood that they should not constitute a second improvement to the embodiment of the present application. Definition of coupling patch 1113.

Please refer to Figure 14, Figure 16, and Figure 19 together. Figure 19 is an enlarged schematic diagram of position III in Figure 14. The second radiating arm 120 includes a second main radiating arm 121. The second main radiating arm 121 includes a second main radiating patch 1211. The second radiating arm 120 located at the edge of the antenna array 1 also includes a third coupling patch 123, the third coupling patch 123 is spaced apart from and coupled to the second main radiation patch 1211 located in the second radiating arm 120 at the edge of the antenna array 1, and the third coupling patch 123 is located The second main radiation patch 1211 is on a side away from the center of the antenna module 10 .

In one embodiment, the third coupling patch 123 and the second main radiation patch 1211 are arranged coplanarly. In this way, the antenna array 1 can have a lower profile.

In a tightly coupled array antenna, the coupling effect of the antenna module 10 located at the edge is often not as good as the coupling effect at the center. In this embodiment, the third coupling patch 123 is spaced apart from and coupled to the second main radiation patch 1211 in the second radiating arm 120 located at the edge of the antenna array 1, and the third coupling patch 123 is located on the side of the second main radiating patch 1211 away from the center of the antenna module 10, and can complement the coupling environment of the second main radiating patch 1211 located on the edge. The chip 1211 provides capacitive coupling, and the second main radiation patch 1211 located at the edge also has a relatively good coupling environment, thereby broadening the bandwidth, increasing the gain, and improving the antenna module of the close-coupled array antenna 20 located at the edge. 10 features.

Please further refer to Figure 19. The second main radiation patch 1211 has a third edge 121a, and the third edge 121a has a third notch 121b. Two adjacent second main radiation patches in different antenna modules 10 The third notch 121b of the piece 1211 is at least partially facing. The third coupling patch 123 has a fourth edge 123a, and the fourth edge 123a has a fourth notch 123b. The fourth notch 123b is connected to the second main radiation in the second radiating arm 120 located at the edge of the antenna array 1. The third notch 121b of the patch 1211 is at least partially facing. The antenna module 10 further includes a plurality of fourth coupling patches 124. The fourth coupling patches 124 are disposed in the receiving space formed by the third gaps 121b of the two adjacent second main radiation patches 1211. And the fourth coupling patch 124 is also disposed in the receiving space formed by the third notch 121b and the fourth notch 123b.

The shape of the third notch 121b includes, but is not limited to, rectangular, semicircular, etc. Compared with the second main radiation patch 1211 without the third notch 121b, in the embodiment of the present application, the second main radiation patch 1211 has a third notch 121b. This method can increase the number of the second main radiation patch 1211. The current path on the main radiation patch 1211 increases the electrical length of the second main radiation patch 1211, thereby broadening the bandwidth and increasing the gain. In addition, the second main radiation patch 1211 supports electromagnetic wave signals in a preset frequency band. Under the premise, the size of the second main radiation patch 1211 is made smaller.

In addition, the second main radiation patch 1211 has a third notch 121b, so that the shape of the first patch is generally fish-shaped. Compared with the radiation patch without the third notch 121b, the second main radiation patch 1211 provided in the embodiment of the present application has the third notch 121b. The second main radiation patch 1211 is relatively regular and can be changed. The surface current path of the second main radiation patch 1211 suppresses surface waves, enhances radiation effects, increases gain, and broadens bandwidth.

Correspondingly, the third coupling patch 123 has a fourth notch 123b. This method can increase the current path on the third coupling patch 123, thereby increasing the electrical length of the third coupling patch 123. This further widens the bandwidth, increases the gain, and makes the size of the third coupling patch 123 smaller on the premise that the third coupling patch 123 supports electromagnetic wave signals in a preset frequency band.

Please refer to Figure 14 and Figure 20. Figure 20 is an enlarged schematic diagram of IV in Figure 14. The antenna module 10 also includes a fourth coupling patch 124. The fourth coupling patch 124 is disposed in the receiving space formed by the third gaps 121b of the two adjacent second main radiation patches 1211, which can enhance Coupling between the second main radiation patches 1211 between two adjacent antenna modules 10 .

The antenna module 10 further includes a plurality of fourth coupling patches 124. The fourth coupling patches 124 are disposed in the receiving space formed by the third notch 121b and the fourth notch 123b, thereby increasing the number of The coupling capacitance between the third coupling patch 123 and the second main radiation patch 1211 is increased, thereby enhancing the coupling between the third coupling patch 123 and the second main radiation patch 1211.

Optionally, the fourth coupling patch 124 and the second main radiation patch 1211 may be located on the same layer or on different layers. When the fourth coupling patch 124 and the second main radiation patch 1211 are located on the same layer, the thickness of the antenna array 1 can be further reduced.

Please refer to Figure 21, which is a schematic structural diagram of the fourth coupling patch in Figures 19 and 20. The fourth coupling patch 124 includes a third coupling branch 124a, a fourth coupling branch 124b and a connection branch 124c. The connection branch 124c is connected to the third coupling branch 124a and the fourth coupling branch 124b. The extension direction of the third coupling branch 124a is parallel to, or approximately parallel to, the extension direction of the fourth coupling branch 124b.

In FIG. 19 , in the fourth coupling patch 124 disposed between the second main radiation patch 1211 and the third coupling patch 123 , the third coupling branch 124 a , the fourth coupling branch 124 b and the connecting branch 124 c are The positional relationship between the second main radiation patch 1211 and the third coupling patch 123 is described in detail as follows. The third coupling branch 124a faces the third notch 121b and is coupled with the second main radiation patch 1211. The fourth coupling branch 124b faces the fourth notch 123b and is coupled with the third coupling patch 123 .

In FIG. 20 , the third coupling branch 124 a , the fourth coupling branch 124 b and the connecting branch are arranged in the fourth coupling patch 124 in the receiving space formed by the third gaps 121 b of the two adjacent second main radiation patches 1211 . The positional relationship between 124c and the two second main radiation patches 1211 is described in detail as follows. The third coupling branch 124a faces one of the two second main radiation patches 1211 and is coupled with the one; the fourth coupling branch 124b faces the other of the two second main radiation patches 1211. one and coupled to said other.

The third coupling branch 124a may be straight or wavy. In this embodiment, the shape of the third coupling branch 124a is not limited. The extending direction of the third coupling branch 124a is the same or substantially the same as the extending direction of the third edge 121a. In this way, the coupling effect between the third coupling branch 124a and the third coupling patch 123 is high.

The fourth coupling branch 124b may be in a straight strip shape or a wavy shape. In this embodiment, the shape of the fourth coupling branch 124b is not limited. The extending direction of the fourth coupling branch 124b is the same or substantially the same as the extending direction of the fourth edge 123a. In this way, the coupling effect between the fourth coupling branch 124b and the second main radiation patch 1211 is better.

In the schematic diagram of this embodiment, the third coupling branch 124a, the fourth coupling branch 124b and the connecting branch 124c are all straight strips. It can be understood that they should not constitute the fourth coupling branch provided by the embodiment of the present application. Definition of coupling patch 124.

Taking the antenna array 1 as an example of a tightly coupled circularly polarized array antenna supporting a frequency range of 20 to 45 GHz, its central operating frequency is 30 GHz. Taking the following environment as an example, the total thickness of antenna array 1 is 0.175 times the wavelength corresponding to the highest operating frequency. The upper layer of the antenna array 1 uses a plate with a relative dielectric constant of ε ₁ =3.29, a tangent loss angle tanδ ₁ =0.006, and a thickness H ₁ =0.326 mm. The central layer of the antenna array 1 uses a plate with ε ₂ =3.31, tangent loss angle tanδ ₂ =0.0033, and thickness H ₂ =0.635mm. The lower layer of the Tianxia module uses a plate with a relative dielectric constant of ε ₃ =3.29, a tangent loss angle tanδ ₃ =0.006, and a thickness H ₃ =0.249.

The upper layer of the antenna array 1 is an insulating dielectric layer between the first conductive patch 112 and the second conductive patch 122 and the layer where the radiating unit 100 is located. The central layer of the antenna array 1 is an insulating dielectric layer between the layer where the first conductive patch 112 and the second conductive patch 122 are located and the first conductive layer 20 . The lower layer of the antenna array 1 is an insulating dielectric layer between the first conductive layer 20 and the second conductive layer 30 .

The following describes the performance of the antenna module 10 and the antenna array 1 in combination with the previous description and relevant simulation diagrams.

Figure 22 is a schematic diagram of the simulation results of the standing wave ratio of the antenna module feed port. In this simulation diagram, the horizontal axis is frequency, the unit is GHz; the vertical axis is antenna voltage standing wave ratio (VSWR), also called standing wave ratio, or standing wave coefficient, without unit. It can be seen from this simulation diagram that the frequency band range of the feed port standing wave ratio less than 3 is 17.33GHz ~ 46.14GHz. The antenna array 1 covers the 5G millimeter wave operating frequency band 24.75GHz ~ 27.5GHz and 37GHz ~ 42.5GHz. The antenna voltage standing wave ratio (VSWR) is an important indicator to measure the antenna feed efficiency; the smaller the VSWR, the less reflection and the better the matching. The VSWR is less than 3 as a smaller standard. The embodiment of the present application provides the antenna module 10 in the antenna array 1 to control the VSWR at a lower value and achieve better matching.

Figure 23 is a schematic diagram of the antenna module axial ratio simulation results. In this simulation diagram, the horizontal axis is frequency in GHz; the vertical axis is Axial Ratio Value in dB. It can be seen from the figure that the frequency band range of the antenna axial ratio less than 3 is 19.56GHz ~ 30.03GHz, 35.56GHz ~ 43.96GHz. The antenna axial ratio covers the 5G millimeter wave operating frequency band 24.75GHz ~ 27.5GHz, 37GHz ~ 42.5GHz. Note that the antenna module 10 is a 5G millimeter wave circularly polarized antenna.

Figure 24 shows the gain pattern of the E-plane and H-plane of the antenna module at the highest operating frequency of 43GHz. Among them, the maximum radiation direction of the antenna module 10 is along the Z axis, then the theta angle range is selected from -180° to 180°, and the selection of the phi angle corresponds to different planes. For example, when the selected phi angle direction is consistent with the electric field vector, it is the E plane. When orthogonal, it is the H plane. The E plane is the Z-Y plane (i.e., the YOZ plane); the H plane is the X-Z plane (i.e., the XOZ plane). In this schematic diagram, the gain pattern of the E plane and the gain pattern of the H plane have good consistency. It can be seen that the antenna module 10 has stable and wide radiation beam characteristics in a wide frequency band. Specifically, according to the gain pattern waveform conforms to the theory, the gain pattern does not produce distortion, so it is said to have a stable wide radiation beam. Stable wide radiation beam means that the antenna has better circular polarization performance and stability.

Figure 25 shows the gain pattern of the E-plane and H-plane of the antenna module at the lowest operating frequency of 24GHz. It can be seen from this figure that the antenna module 10 has stable and wide radiation beam characteristics in a wide frequency band.

Figure 26 shows the maximum radiation pattern as a function of frequency when the array antenna scan angle is 0°. In this schematic diagram, the horizontal axis is frequency in GHz, and the vertical axis is gain value (Realized Gain) in dB. It can be seen that the minimum achievable gain of the array antenna in the working frequency band is 5.96dB, which shows that the array antenna is in good working condition.

Figure 27 shows the maximum radiation pattern of the array antenna as the angle changes when the scanning angle is 0° at the highest operating frequency of 43GHz. In this diagram, the abscissa is the azimuth angle Theta, the unit is deg; the ordinate is the gain value, the unit is dB. It can be seen from this schematic that the achievable gain at the azimuth angle Theta=0° is 11.52dB, and the array antenna has stable broadband radiation beam characteristics in a wide frequency band.

Figure 28 shows the maximum radiation pattern of the array antenna as the angle changes when the scanning angle is 60° at the highest operating frequency of 43GHz. In this schematic diagram, the abscissa is the azimuth angle Theta, the unit is deg; the ordinate is the gain value, the unit is dB. It can be seen from this schematic that the achievable gain at the azimuth angle Theta=60° is 8.20dB, and the array antenna has stable broadband radiation beam characteristics in a wide frequency band.

Figure 29 shows the maximum radiation pattern of the array antenna as a function of angle when the scanning angle is 0° at the lowest operating frequency of 24GHz. In this schematic diagram, the abscissa is the azimuth angle Theta, the unit is deg; the ordinate is the gain value, the unit is dB. It can be seen from this schematic that the achievable gain at the azimuth angle Theta=0° is 5.96dB, and the array antenna has stable broadband radiation beam characteristics in a wide frequency band.

Figure 30 shows the maximum radiation pattern of the array antenna as a function of angle when the scanning angle is 60° at the lowest operating frequency of 24GHz. In this schematic diagram, the abscissa is the azimuth angle Theta, the unit is deg; the ordinate is the gain value, the unit is dB. It can be seen from this schematic that the achievable gain at the azimuth angle Theta=0° is 3.82dB, and the array antenna has stable broadband radiation beam characteristics in a wide frequency band.

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

Claims

An antenna module, wherein the antenna module includes:

The radiation unit includes a pair of first radiating arms and a pair of second radiating arms;

A coupler, the coupler is used to receive the original radio frequency signal input from the feed source, and output a first radio frequency signal and a second radio frequency signal with the same amplitude and a phase difference of 90° according to the original radio frequency signal;

The first power feeding part includes a first transmission part and a first power feeding part connected by bending. The first transmission part is connected to the coupler to receive the first radio frequency signal. The first power feeding part is used for The pair of first radiating arms couple the feed; and

The second power feeding member includes a second transmission part and a second power feeding part connected by bending. The second transmission part is spaced apart from the first transmission part. The second transmission part is connected to the coupler to A second radio frequency signal is received, and the second feeding part is used to couple and feed the pair of second radiating arms.
The antenna module according to claim 1, wherein the first feeding part includes:

A first sub-feeding part connected to the first transmission part, the first sub-feeding part being spaced apart from and coupled to one of the pair of first radiating arms;

A first sub-connection part has one end connected to the first sub-feeding part; and

A second sub-feeding part is connected to the other end of the first sub-connection part, and the second sub-feeding part is spaced apart from and coupled to the other one of the pair of first radiating arms;

The first power feeding element also includes:

A first coupling part is connected to the first transmission part, and the first coupling part is disposed adjacent to the first radiating arm compared to the first sub-feed part, and the first coupling part is connected to the first transmission part. The one of the pair of first radiating arms is spaced apart and coupled.
The antenna module of claim 2, wherein the first sub-feeding part is separated from the one of the pair of first radiating arms by a first distance; the second sub-feeding part is separated from the one of the pair of first radiating arms; The other of the pair of first radiating arms is spaced a second distance apart, wherein the second distance is equal to the first distance.
The antenna module according to claim 2, wherein the second feeding part includes:

A third sub-feeding part is connected to the second transmission part, and the third sub-feeding part is spaced apart from and coupled to one of the pair of second radiating arms;

The second sub-connection part has one end connected to the third sub-feeding part and is cross-insulated with the first sub-connection part; and

a fourth sub-feeding part connected to the other end of the second sub-connection part, the fourth sub-feeding part being spaced apart from and coupled to the other one of the pair of second radiating arms;

The second feeder also includes:

A second coupling part is connected to the second transmission part, and the second coupling part is disposed adjacent to the second radiating arm compared to the third sub-feed part, and the second coupling part is connected to the second transmission part. The one of the pair of second radiating arms is spaced apart and coupled.
The antenna module according to claim 4, wherein the second sub-connection part includes:

a first connection section, the first connection section is connected to the third sub-feeding part;

a second connection section, the second connection section is electrically connected to the first connection section and arranged in different layers, and the second connection section and the first sub-connection portion are cross-insulated; and

A third connection section, the third connection section is electrically connected to the second connection section and the fourth sub-feeding section, and the first connection section, the third connection section and the first sub-feeding section are electrically connected. The connecting parts are set on the same layer.
The antenna module according to claim 4, wherein the first sub-feeding part, the second sub-feeding part, the third sub-feeding part and the fourth sub-feeding part are on the same layer. The pair of first radiating arms and the pair of second radiating arms are arranged on the same layer.
The antenna module according to claim 1, wherein the coupler includes:

The first piece, the first piece is electrically connected to the first power feeding member and is used for outputting the first radio frequency signal to the first power feeding member;

a second piece, the second piece is stacked and spaced apart from the first piece, and is coupled with the first piece; the second piece is electrically connected to the second feed piece to output the third two radio frequency signals to the second feeder;

A first conductive layer, the first conductive layer is located on a side of the first piece and the second piece adjacent to the first power feeding piece and the second power feeding piece, the first conductive layer has A first through hole and a second through hole, the first transmission part is provided in the first through hole, and the second transmission part is provided in the second through hole; and

A second conductive layer is located on a side of the first piece and the second piece away from the first power feeding piece and the second power feeding piece.
The antenna module according to claim 7, wherein the antenna module meets at least one of the following conditions:

The first radiating arm includes a first main radiating arm and a first conductive patch. The first conductive patch is located between the first main radiating arm and the first conductive layer. The first conductive patch The piece is coupled and connected to the first main radiating arm, and the first conductive patch is connected to the first conductive layer;

The second radiating arm includes a second main radiating arm and a second conductive patch. The second conductive patch is located between the second main radiating arm and the first conductive layer. The second conductive patch The piece is coupled and connected to the second main radiating arm, and the second conductive patch is connected to the first conductive layer.
An antenna array, wherein the antenna array includes a plurality of antenna modules distributed in the array according to any one of claims 1 to 8, wherein two adjacent antenna modules are coupled to each other, Form a tightly coupled array antenna.
The antenna array of claim 9, wherein the first radiating arm includes a first main radiating arm, and the first main radiating arm includes a first main radiating patch and a first coupling patch that are spaced apart, so The first coupling patch is disposed on a side of the first main radiation patch away from the center of the antenna module, and the first coupling patch is coupled to the first main radiation patch; the different The second radiating arms in the antenna module are arranged adjacently and coupled to each other.
The antenna array of claim 10, wherein the first main radiation patch has a first edge, and the first edge is provided with a first notch; the first coupling patch has a second edge, the The second edge is spaced apart from the first edge, the second edge is provided with a second notch, and the second notch is at least partially opposite to the first notch;

The first main radiating arm further includes a second coupling patch, and the second coupling patch is disposed in the receiving space formed by the first notch and the second notch.
The antenna array of claim 11, wherein the second coupling patch includes:

a first coupling branch, the first coupling branch faces the first notch and is coupled with the first coupling patch;

a second coupling branch, the second coupling branch faces the second notch and is coupled with the second coupling patch; and

A connecting branch connects the first coupling branch and the second coupling branch.
The antenna array of claim 10, wherein the second radiating arm includes a second main radiating arm, the second main radiating arm includes a second main radiating patch, and the second radiating patch located at the edge of the antenna array The arm also includes a third coupling patch, the third coupling patch is spaced apart from and coupled to the second main radiation patch in the second radiating arm located at the edge of the antenna array, and the third coupling patch is located at The side of the second main radiation patch facing away from the center of the antenna module.
The antenna array of claim 13, wherein the second main radiation patch has a third edge, the third edge has a third notch, and two adjacent second main radiation patches in different antenna modules The third notch of the patch is at least partially aligned;

The third coupling patch has a fourth edge, and the fourth edge has a fourth notch. The fourth notch is at least the same as the third notch of the second main radiating patch located in the second radiating arm at the edge of the antenna array. Partially facing;

The antenna module also includes a plurality of fourth coupling patches, the fourth coupling patches are disposed in the receiving space formed by the third gaps of the two adjacent second main radiation patches, and the fourth coupling patches The coupling patch is also disposed in the receiving space formed by the third notch and the fourth notch.
An electronic device, wherein the electronic device includes a device body and the antenna module according to any one of claims 1 to 8, the antenna module being carried on the device body; or, the electronic device includes The device body and the antenna array according to any one of claims 9 to 14, the antenna array being carried on the device body.