Antenna array and communication equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, and discloses an antenna array and communication equipment, the antenna array comprises a circuit board, a circuit layer, a grounding plate and a decoupling structure, the circuit layer comprises a first antenna and a second antenna, and the first antenna and the second antenna are arranged along the direction from one end of a first surface to the other end of the first surface. The decoupling structure is arranged between the first antenna and the second antenna, the first decoupling structure comprises a first decoupling groove, a second decoupling groove and a decoupling gap, the first decoupling groove and the second decoupling groove are in central symmetry, and an opening of the second decoupling groove is communicated with the decoupling gap. According to the embodiment of the invention, the method can achieve the high isolation of a plurality of antennas, and achieves the miniaturization.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of communication, and particularly relate to an antenna array and a communication device. BACKGROUND

[0002] An antenna is an element that radiates and receives electromagnetic waves to transmit information through electromagnetic waves. In recent years, communication technology has developed rapidly, and various types of electronic products are becoming increasingly thin. In order to adapt to the thinness of electronic products, components such as antennas in electronic products also need to be miniaturized. With the reduction of antenna design space, the challenge to antenna design is becoming greater and greater. In electronic products, WiFi (Wireless Fidelity) antennas and GPS (Global Positioning System) antennas are two commonly used and necessary antennas.

[0003] In the implementation process of the embodiments of the utility model, the inventor finds that: in order to make the antenna system have better performance, the antenna units must be unrelated (coupling is reduced), however, the space that can be reserved for the antenna in the mobile device is very limited, so that the spatial distance between multiple antennas cannot be greater than or equal to a wavelength, how to reduce the coupling between multiple antenna units in the limited antenna space is a more tricky problem. UTILIT Y MODEL CONTENT

[0004] The technical problem solved by the embodiments of the present application is to provide an antenna array, by arranging a decoupling structure on a WiFi antenna and a GPS antenna, increasing the isolation between the WiFi antenna and the GPS antenna, reducing the coupling between the WiFi antenna and the GPS antenna, thereby reducing the interference between the two, achieving the purpose of high isolation and miniaturization of multiple antennas.

[0005] To solve the above technical problems, one technical scheme adopted by the embodiments of the present application is to provide an antenna array, comprising a circuit board, a circuit layer, a grounding plate and a decoupling structure, the circuit board is provided with a first surface and a second surface, the first surface and the second surface are oppositely arranged; the circuit layer is arranged on the first surface, the circuit layer comprises a first antenna and a second antenna, the first antenna is arranged at one end of the first surface, and the second antenna is arranged at the other end of the first surface; the decoupling structure is arranged on the first surface, along the direction from one end of the first surface to the other end of the first surface, the decoupling structure is arranged between the first antenna and the second antenna, the first decoupling structure comprises a first decoupling slot, a second decoupling slot and a decoupling gap, and the first decoupling slot and the second decoupling slot are centrally symmetric, the opening of the second decoupling slot is in communication with the decoupling gap.

[0006] Optionally, the first decoupling structure includes two first decoupling grooves, and the first decoupling groove includes a first hook-back groove portion, a first straight groove portion and a second hook-back groove portion connected in sequence, and the first hook-back groove portion and the second hook-back groove are centrally symmetrical.

[0007] Optionally, the second decoupling grooves enclose a cavity, and an opening of the cavity is connected to the decoupling gap.

[0008] Optionally, the second decoupling slot includes a third hook-back slot portion and a fourth hook-back slot portion connected in sequence, and one end of the third hook-back slot portion and one end of the fourth hook-back slot portion are enclosed to form an opening.

[0009] Optionally, the decoupling structure is provided in a clearance on the circuit board.

[0010] Optionally, the grounding plate is also provided with a first slot, the first antenna includes a first radiating part, a second radiating part and a third radiating part, one end of the third radiating part is connected to the grounding plate, the first radiating part is connected to the second radiating part, and a first gap is provided between the first radiating part and the second radiating part, and the first gap is connected to the first slot.

[0011] Optionally, the first gap is an “L”-shaped gap.

[0012] Optionally, the grounding plate is also provided with a second slot, the second antenna includes a fourth radiating portion, a fifth radiating portion and a sixth radiating portion, one end of the sixth radiating portion is connected to the grounding plate, the fourth radiating portion is connected to the fifth radiating portion, and a second gap is provided between the fourth radiating portion and the fifth radiating portion, and the second gap is connected to the second slot.

[0013] Optionally, the second gap is an “L”-shaped gap.

[0014] In order to solve the above technical problems, another technical solution adopted in the embodiment of the present application is: providing a communication device, including any of the above antenna arrays.

[0015] The embodiment of the present application provides an antenna array, which comprises a circuit board, a circuit layer, a grounding plate and a decoupling structure, the circuit board is provided with a first surface and a second surface, and the first surface and the second surface are oppositely arranged; the circuit layer is arranged on the first surface, the circuit layer comprises a first antenna and a second antenna, the first antenna is arranged at one end of the first surface, and the second antenna is arranged at the other end of the first surface; the decoupling structure is arranged on the first surface, and along the direction from one end of the first surface to the other end of the first surface, the decoupling structure is arranged between the first antenna and the second antenna, the first decoupling structure comprises a first decoupling slot, a second decoupling slot and a decoupling gap, and the first decoupling slot and the second decoupling slot are centrosymmetric, the opening of the second decoupling slot is communicated with the decoupling gap, by arranging the decoupling structure between the first antenna and the second antenna, the isolation between the first antenna and the second antenna is increased, the coupling between the first antenna and the second antenna is reduced, so that the interference between the first antenna and the second antenna is reduced, and the purpose of high isolation and miniaturization of multiple antennas is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the specific embodiments of the present application or the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0017] Figure 1 FIG. 1 is a schematic diagram of an antenna array according to an embodiment of the present application;

[0018] Figure 2 FIG. 2 is a partial enlarged view of part A in FIG. 1; Figure 1

[0019] Figure 3 FIG. 3 is a partial enlarged view of part B in FIG. 1; Figure 1

[0020] Figure 4 FIG. 4 is a partial enlarged view of part C in FIG. 1; Figure 1

[0021] Figure 5 FIG. 5 is another partial enlarged view of part A in FIG. 1; Figure 1

[0022] Figure 6 FIG. 6 is still another partial enlarged view of part A in FIG. 1; Figure 1

[0023] Figure 7 FIG. 7 is a decoupling state diagram after the decoupling structure is arranged according to an embodiment of the present application;

[0024] Figure 8 ​​​​​is a schematic diagram of antenna array isolation of an embodiment of the present application;

[0025] Figure 9 is still another schematic diagram of antenna array isolation of an embodiment of the present application.

[0026] The reference signs in the detailed description are as follows: 100, antenna array; 10, circuit board; 101, first surface; 20, circuit layer; 201, first antenna; 211, first radiating part; 212, second radiating part; 213, third radiating part; 214, first gap; 202, second antenna; 221, fourth radiating part; 222, fifth radiating part; 223, sixth radiating part; 224, second gap; 30, ground plate; 301, first slot; 302, second slot; 40, decoupling structure; 401, first decoupling slot; 411, first hook slot part; 412, first straight slot part; 413, second hook slot part; 402, second decoupling slot; 421, third hook slot part; 422, fourth hook slot part; 403, decoupling gap. DETAILED DESCRIPTION

[0027] For the purpose of facilitating the understanding of the present application, the present application will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like used in the present specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and the like are merely for the purpose of description and cannot be understood as indicating or implying relative importance.

[0028] Unless otherwise defined, all technical and scientific terms used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the present specification includes any and all combinations of one or more of the related listed items.

[0029] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] Please refer to Figure 1The antenna array 100 comprises a circuit board 10, a circuit layer 20, a ground plate 30 and a decoupling structure 40. The circuit board 10 is provided with a first surface 101 and a second surface (not shown in the figure), and the first surface 101 and the second surface are oppositely arranged. The circuit layer 20 is arranged on the first surface 101, and the circuit layer 20 comprises a first antenna 201 and a second antenna 202. The first antenna 201 is arranged at one end of the first surface 101, and the second antenna 202 is arranged at the other end of the first surface 101. The distance between the first antenna 201 and the second antenna 202 can be increased, and the interference between the two signals can be reduced. The first antenna 201 and the second antenna 202 are both used for transmitting WIFI signals and GPS signals. The decoupling structure 40 is arranged on the first surface 101 along the direction from one end of the first surface 101 to the other end of the first surface 101. The decoupling structure 40 is arranged between the first antenna 201 and the second antenna 202. The first decoupling structure 40 comprises a first decoupling slot 401, a second decoupling slot 402 and a decoupling gap 403, and the first decoupling slot 401 and the second decoupling slot 402 are centrosymmetric. The first decoupling slot 401 and the second decoupling slot 402 can absorb or reflect electromagnetic waves of a specific frequency, thereby reducing the coupling of the signal frequencies of the first antenna 201 and the second antenna 202. The opening of the second decoupling slot 402 is in communication with the decoupling gap 403. The decoupling gap 403 serves as a connecting channel between the first decoupling slot 401 and the second decoupling slot 402, allowing the ground current to flow between the two, and also introducing a phase difference, which helps to further reduce the coupling between the first antenna 201 and the second antenna 202. By arranging the first antenna 201 and the second antenna 202, the communication rate is increased, and better radiation field is achieved in each direction, thereby solving the problems of single antenna system and uneven antenna radiation direction.

[0031] In the embodiment of the present application, the decoupling structure 40 is arranged in the circuit board 10, so as to avoid the interference of other metal components or electronic elements on the antenna radiation mode.

[0032] Please refer to Figure 2 and combine with Figure 5 , Figure 5For the antenna signal radiation frequency coverage of the first antenna 201, the ground plate 30 is further provided with a first slot 301, the first antenna 201 includes a first radiation part 211, a second radiation part 212 and a third radiation part 213, one end of the third radiation part 213 is connected with the ground plate 30, for radiating a WIFI 6E signal frequency band, the first radiation part 211 is connected with the second radiation part 212, for radiating a GPS antenna signal frequency band, the second radiation part 212 is used for radiating a WIFI 2.4GHZ antenna signal frequency band, and a first gap 214 is arranged between the first radiation part and the second radiation part 212, the first gap 214 is used for radiating a WIFI 5G frequency band, the first gap 214 is in communication with the first slot 301, which helps to reduce the energy loss of the current flowing through the bottom of the antenna array 100, thereby improving the radiation efficiency of the antenna array 100, and the communication of the first gap 214 and the first slot 301 can distribute the ground current, thereby reducing the possibility of current directly coupling to adjacent antennas through the ground. This design helps to enhance the isolation between antennas and reduce signal crosstalk.

[0033] Please refer to Figure 3 and combine Figure 6 , Figure 6 For the antenna signal radiation frequency coverage of the second antenna 202, the ground plate 30 is further provided with a second slot 302, the second antenna 202 includes a fourth radiation part 221, a fifth radiation part 222 and a sixth radiation part 223, one end of the sixth radiation part 223 is connected with the ground plate 30, for radiating a WIFI 6E signal frequency band, the fourth radiation part 221 is connected with the fifth radiation part 222, for radiating a GPS antenna signal frequency band, the fifth radiation part 222 is used for radiating a WIFI 2.4GHZ antenna signal frequency band, and a second gap 224 is arranged between the fourth radiation part 221 and the fifth radiation part 222, the second gap 224 is used for radiating a WIFI 5G frequency band, the second gap 224 is in communication with the second slot 302, further, which helps to reduce the energy loss of the current flowing through the bottom of the antenna array 100, thereby improving the radiation efficiency of the antenna array 100, and the communication of the second gap 224 and the second slot 302 can distribute the ground current, thereby reducing the possibility of current directly coupling to adjacent antennas through the ground. Further enhance the isolation between antennas and reduce signal crosstalk.

[0034] In the embodiment of the present application, the first gap 214 and the second gap 224 are both "L" type gaps.

[0035] Please refer to Figure 4 and combine Figure 7 , Figure 7The decoupling state diagram after the antenna array 100 is provided with the decoupling structure 40 is shown. The first decoupling slot 401 includes a first hook-back slot portion 411, a first straight slot portion 412, and a second hook-back slot portion 413 connected in sequence. The first hook-back slot portion 411 and the second hook-back slot are centrally symmetrical, which helps to generate similar electromagnetic effects on both sides of the first decoupling slot 401, thereby enhancing the decoupling effect. The second decoupling slot 402 encloses a cavity, the opening of which is connected to the decoupling gap 403, and the second decoupling slot 402 includes a third hook-back slot portion 421 and a fourth hook-back slot connected in sequence. Part 422, one end of the third return hook groove part 421 and one end of the fourth return hook groove part 422 are enclosed to form an opening. Through the above arrangement, when the current of the grounding plate 30 enters the cavity through the decoupling gap 403, it will interact with the electromagnetic field inside the cavity, thereby changing its propagation path and phase. The first decoupling groove 401 and the second decoupling groove 402 are used to extend the distance of the current in the grounding plate 30, improve the isolation between the first antenna 201 and the second antenna 202, reduce the coupling between the first antenna 201 and the second antenna 202, and thus reduce the interference between the first antenna 201 and the second antenna 202.

[0036] In the embodiment of the present application, the first decoupling slot 401 is used to decouple the signal frequency of GPS 1.575 GHZ and WI FI 2.4-2.5 GHZ, the second decoupling slot 402 is used to decouple the signal frequency of WI FI 5G, 5.15-5.85 GHZ, and the decoupling slot 403 is used to decouple the signal frequency of WI FI 6E, 5.95-7.125 GHZ. Figure 8 and Figure 9 It can be seen that the antenna isolation reaches above -16.6dB. In addition, the 2.4-2.5GHZ isolation reaches -25dB, the 5.15-5.85GHZ isolation reaches -25dB, and the 5.95-7.125GHZ isolation reaches above -34dB.

[0037] The embodiment of the present application provides an antenna array 100, which comprises a circuit board 10, a circuit layer 20, a grounding plate 30 and a decoupling structure 40, the circuit board 10 is provided with a first surface 101 and a second surface, the first surface 101 and the second surface are oppositely arranged; the circuit layer 20 is arranged on the first surface 101, the circuit layer 20 comprises a first antenna 201 and a second antenna 202, the first antenna 201 is arranged at one end of the first surface 101, and the second antenna 202 is arranged at the other end of the first surface 101; the decoupling structure 40 is arranged on the first surface 101, along the direction from one end of the first surface 101 to the other end of the first surface 101, the decoupling structure 40 is arranged between the first antenna 201 and the second antenna 202, the first decoupling structure 40 comprises a first decoupling slot 401, a second decoupling slot 402 and a decoupling gap 403, and the first decoupling slot 401 and the second decoupling slot 402 are centrosymmetric, the opening of the second decoupling slot 402 is communicated with the decoupling gap 403, by arranging the decoupling structure 40 between the first antenna 201 and the second antenna 202, the isolation between the first antenna 201 and the second antenna 202 is increased, the coupling between the first antenna 201 and the second antenna 202 is reduced, so that the interference between the first antenna 201 and the second antenna 202 is reduced, and the purpose of high isolation and miniaturization of multiple antennas is achieved.

[0038] The embodiment of the present application further provides a communication device, which comprises the above antenna array 100, and the specific structure and functions of the communication device can be referred to the above embodiment, and details are not described herein.

[0039] The above only describes the embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation by using the content of the specification and the drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An antenna array, characterized in that: include: A circuit board is provided with a first surface and a second surface, wherein the first surface and the second surface are arranged opposite to each other; a circuit layer disposed on the first surface, the circuit layer comprising a first antenna and a second antenna, the first antenna being disposed at one end of the first surface, and the second antenna being disposed at the other end of the first surface; ground plate; A decoupling structure is arranged on the first surface. Along the direction from one end of the first surface to the other end of the first surface, the decoupling structure is arranged between the first antenna and the second antenna. The first decoupling structure includes a first decoupling groove, a second decoupling groove and a decoupling gap. The first decoupling groove and the second decoupling groove are centrally symmetrical, and the opening of the second decoupling groove is connected to the decoupling gap.

2. The antenna array according to claim 1, wherein: The first decoupling slot includes a first hook-return slot portion, a first straight slot portion, and a second hook-return slot portion connected in sequence, and the first hook-return slot portion and the second hook-return slot portion are centrally symmetrical.

3. The antenna array according to claim 2, wherein: The second decoupling grooves enclose a cavity, and an opening of the cavity is communicated with the decoupling gap.

4. The antenna array according to claim 3, characterized in that The second decoupling slot includes a third hook return slot portion and a fourth hook return slot portion connected in sequence, and one end of the third hook return slot portion and one end of the fourth hook return slot portion are enclosed to form an opening.

5. The antenna array according to claim 1, wherein: The decoupling structure is disposed in a clearance on the circuit board.

6. The antenna array according to claim 5, characterized in that The ground plate is also provided with a first slot, the first antenna includes a first radiating part, a second radiating part and a third radiating part, one end of the third radiating part is connected to the ground plate, the first radiating part is connected to the second radiating part, and a first gap is provided between the first radiating part and the second radiating part, and the first gap is connected to the first slot.

7. The antenna array according to claim 6, characterized in that The first gap is an "L"-shaped gap.

8. The antenna array according to claim 7, characterized in that The ground plate is also provided with a second slot, and the second antenna includes a fourth radiating portion, a fifth radiating portion and a sixth radiating portion, one end of the sixth radiating portion is connected to the ground plate, the fourth radiating portion is connected to the fifth radiating portion, and a second gap is provided between the fourth radiating portion and the fifth radiating portion, and the second gap is connected to the second slot.

9. The antenna array according to claim 1, wherein: The second gap is an "L"-shaped gap.

10. A communication device, characterized in that: Comprising the antenna array according to any one of claims 1 to 9.

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