Antenna structure and antenna filter unit

Abstract

This disclosure provides an antenna structure and an antenna filter unit. The antenna structure includes a power divider board, a power divider circuit array located on one side of the power divider board, and a radiating element array. The power divider circuit array includes at least one power divider circuit group, which comprises N power divider circuits arranged along a first direction, where N ≥ 2 and N is an integer. Within the same power divider circuit group, at least a corresponding first auxiliary coupling circuit is provided between at least two adjacent power divider circuits in the first direction. The first auxiliary coupling circuit is configured to form inductive coupling with both corresponding adjacent power divider circuits in the first direction, thereby improving the coupling degree between the corresponding adjacent power divider circuits in the first direction. The technical solution of this disclosure, by setting the above-mentioned first auxiliary coupling circuit, can effectively improve the coupling degree between power divider circuits in the power divider circuit array.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to an antenna structure and an antenna filter unit. Background Technology

[0002] Antenna Filter Units (AFUs) are a new integrated industry technology that combines antenna structure and filter together. In the 5G era, AFU design integrates antenna structure and filter, while eliminating connectors, which can reduce impedance links, shrink system size, reduce system cost and improve system performance. Summary of the Invention

[0003] In a first aspect, embodiments of this disclosure provide an antenna structure, including: a power divider board and a power divider circuit array and a radiating element array located on one side of the power divider board, wherein the power divider circuit array includes: at least one power divider circuit group, wherein the power divider circuit group includes N power divider circuits arranged along a first direction, where N≥2 and N is an integer;

[0004] The radiation unit array includes multiple radiation units, and each radiation unit is electrically connected to the corresponding power divider circuit.

[0005] Within the same power divider circuit group, at least one corresponding first auxiliary coupling circuit is provided between at least a portion of two adjacent power divider circuits in the first direction. The first auxiliary coupling circuit is configured to form inductive coupling with both of the corresponding adjacent power divider circuits in the first direction, thereby improving the coupling degree between the corresponding adjacent power divider circuits in the first direction.

[0006] In some embodiments, the first auxiliary coupling circuit is arranged on the same layer as the two corresponding power divider circuits and spaced apart, and the first auxiliary coupling circuit is floating.

[0007] The minimum spacing between the first auxiliary coupling circuit and the two corresponding adjacent power divider circuits in the first direction is greater than 0.15 mm and less than or equal to 0.25 mm in the first direction.

[0008] In some embodiments, the first auxiliary coupling circuit includes: a first coupling portion, a second coupling portion, and a first connecting portion, wherein the first coupling portion and the second coupling portion both extend along a second direction, the first connecting portion extends along a first direction, and the first direction intersects with the second direction;

[0009] The first coupling portion and the second coupling portion are respectively close to the two power divider circuits that are adjacent in the first direction to the first auxiliary coupling circuit, and the first coupling portion and the second coupling portion are respectively arranged opposite to the two corresponding power divider circuits in the first direction to form inductive coupling with the corresponding power divider circuits;

[0010] The first connecting part is located between the first coupling part and the second coupling part, and both ends of the first connecting part are connected to the first coupling part and the second coupling part, respectively.

[0011] In some embodiments, within the same power divider circuit group, at least two isolation sections are formed between two adjacent power divider circuits and spaced apart along a second direction;

[0012] Within the same first auxiliary coupling circuit, the first coupling portion and the second coupling portion are located on opposite sides of the isolation section, and the first connecting portion passes through the gap between two adjacent isolation sections to connect with the first coupling portion and the second coupling portion.

[0013] In some embodiments, the power divider circuit includes: two power molecule circuits, the two power molecule circuits being arranged axially symmetrically about a first axis of symmetry parallel to the second direction, the power molecule circuit including: a first-stage power molecule circuit;

[0014] The first-stage power molecule circuit includes: a first main line, a first branch line, and a second branch line. The first main line is configured with a first main extension segment connected to the first main line. The first branch line is configured with a first branch extension segment connected to the first branch line. The second branch line is configured with a second branch extension segment connected to the second branch line. The first branch extension segment, the first branch line, the second branch line, and the first branch extension segment are connected sequentially along the second direction.

[0015] The first main extension segment is located on the side of the first branch extension segment that is away from the first axis of symmetry;

[0016] The first auxiliary coupling circuit is located between the extension segments of two adjacent second branches in the corresponding two power divider circuits.

[0017] In some embodiments, the number of power divider circuit groups is M, and the M power divider circuit groups are arranged sequentially along the second direction, M≥2 and M is an integer. The M×N power divider circuits included in the power divider circuit group are arranged in an array along the first direction and the second direction.

[0018] At least a portion of the two adjacent power dividers in the second direction are provided with at least one corresponding second auxiliary coupling circuit, the second auxiliary coupling circuit being configured to form inductive coupling with both of the corresponding two adjacent power dividers in the second direction, so as to improve the coupling degree between the corresponding two adjacent power dividers in the second direction.

[0019] In some embodiments, the second auxiliary coupling circuit is arranged on the same layer as the two corresponding power divider circuits and spaced apart, and the second auxiliary coupling circuit is floating.

[0020] The minimum spacing between the second auxiliary coupling circuit and the corresponding two power divider circuits in the first direction is greater than or equal to 0.15 mm and less than or equal to 0.25 mm.

[0021] In some embodiments, the second auxiliary coupling circuit includes a third coupling portion, a fourth coupling portion, and a second connecting portion, wherein the third coupling portion, the fourth coupling portion, and the second connecting portion all extend along a second direction;

[0022] The third coupling part and the fourth coupling part are respectively close to the two adjacent power divider circuits in the second direction corresponding to the second auxiliary coupling circuit, and the third coupling part and the fourth coupling part are respectively arranged opposite to the two corresponding power divider circuits in the first direction to form inductive coupling with the corresponding power divider circuits;

[0023] The second connecting part is located between the third coupling part and the fourth coupling part, and both ends of the second connecting part are connected to the third coupling part and the fourth coupling part, respectively.

[0024] In some embodiments, at least two corresponding second auxiliary coupling circuits are provided between two adjacent power divider circuits in the second direction;

[0025] The two second auxiliary coupling circuits are respectively located on opposite sides of the corresponding power divider circuit in the first direction.

[0026] In a second aspect, embodiments of this disclosure provide an antenna filter unit, including: a filter and the antenna structure as described in the first aspect. Attached Figure Description

[0027] Figure 1 A top view schematic diagram of an antenna structure provided in an embodiment of this disclosure;

[0028] Figure 2 This is a top view schematic diagram of the antenna structure in this disclosure without a radiating element array;

[0029] Figure 3 This is a top view schematic diagram of a power divider circuit in this disclosure;

[0030] Figure 4 for Figure 2 An enlarged schematic diagram of region A in the middle;

[0031] Figure 5 for Figure 2 An enlarged schematic diagram of region B in the middle;

[0032] Figure 6 This is a schematic diagram of the structure of an antenna filter unit provided in an embodiment of this disclosure. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solutions of this disclosure, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “including,” “comprising,” or “containing,” and similar terms mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms “connected,” “linked,” or similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0035] In the various figures, the same elements are represented by similar reference numerals. For clarity, not all parts in the figures are drawn to scale. Furthermore, some well-known parts may not be shown in the figures.

[0036] Many specific details of this disclosure, such as the structure, materials, dimensions, processing methods, and techniques of the components, are described below to provide a clearer understanding of the disclosure. However, as those skilled in the art will understand, this disclosure may be implemented without following these specific details.

[0037] The antenna structure includes a power divider board (also called a feed board) and a power divider circuit array (also called a feed network) located on one side of the power divider board. The power divider circuit array includes multiple power divider circuits (also called feed circuits) arranged in an array. For the power divider circuits in the power divider circuit array, it is often required that the coupling between the power divider circuits be as small as possible. Therefore, the coupling between the power divider circuits in the antenna structure involved in related technologies is extremely small. However, with the application of AFU in 5G communication networks, the system end of the current 5G communication network has put forward new requirements, which require that the coupling between the power divider circuits be appropriate, that is, the coupling cannot be too large or too small. This poses a great challenge to the design of the antenna structure. To this end, this disclosure provides an antenna structure and AFU suitable for 5G communication networks.

[0038] Figure 1 This is a top view schematic diagram of an antenna structure provided in an embodiment of this disclosure. Figure 2 This is a top view schematic diagram of the antenna structure in this disclosure without a radiating element array. Figure 3 This is a top view schematic diagram of a power divider circuit in this disclosure. Figures 1 to 3 As shown, the antenna structure includes: a power divider board 100, a power divider circuit array and a radiation element array located on one side of the power divider board 100. The power divider circuit array includes: at least one power divider circuit group GP. The power divider circuit group GP includes N power divider circuits 1 arranged along the first direction X, where N ≥ 2 and N is an integer.

[0039] The radiating element array includes multiple radiating elements 5 (also called "oscillators"), which are electrically connected to corresponding power divider circuits. The connection structure between the radiating elements 5 and the corresponding power divider circuits 1 is conventional technology in the art and will not be described in detail here. Furthermore, Figure 1 The example shown is only one case of a power divider circuit 1 corresponding to 4 radiating units 5.

[0040] Within the same power divider circuit group GP, at least one first auxiliary coupling circuit 2 is provided between two adjacent power divider circuits 1 in the first direction X. The first auxiliary coupling circuit 2 is configured to form inductive coupling with both adjacent power divider circuits 1 in the first direction X, so as to improve the coupling degree between the two adjacent power divider circuits 1 in the first direction X.

[0041] Figure 2 The present invention only provides an example of a power divider circuit group GP comprising four power divider circuits 1 (i.e., N=4), which is for illustrative purposes only and does not limit the technical solutions of this disclosure. In practical applications, the number of power divider circuits 1 included in each power divider circuit group GP can be designed and adjusted as needed.

[0042] In this disclosure, by setting a corresponding first auxiliary coupling circuit 2 between two adjacent power divider circuits 1 in the first direction X, the first auxiliary coupling circuit 2 can form inductive coupling with the two adjacent power divider circuits 1 in the first direction X respectively, so as to improve the coupling degree between the two adjacent power divider circuits 1 in the first direction X, so as to meet the coupling degree requirements of the system end of the 5G communication network for the power divider circuits 1.

[0043] In practical applications, the location, shape, and size of the first auxiliary coupling circuit 2 can be designed and adjusted in advance according to the coupling requirements, and this disclosure does not limit this.

[0044] In some embodiments, the first auxiliary coupling circuit 2 is arranged on the same layer as the two corresponding power divider circuits 1 and spaced apart, and the first auxiliary coupling circuit 2 is floating.

[0045] Generally, the power divider circuit 1 is formed by photolithography (generally including photoresist coating, exposure, development, film etching, and photoresist stripping) on ​​the upper surface of the power divider board 100. That is, by etching away the conductive plating layer in a portion of the upper surface of the power divider board 100, a portion of the unetched area forms the power divider circuit 1. Alternatively, the power divider circuit 1 can also be formed on the upper surface of the power divider board 100 using laser engraving. In this disclosure, by setting the first auxiliary coupling circuit 2 and the power divider circuit 1 on the same layer, the conductive layer originally used to fabricate the power divider circuit 1 can be patterned based on existing photolithography or laser engraving processes, thus simultaneously fabricating the first auxiliary coupling circuit 2 and the power divider circuit 1. Therefore, the addition of the first auxiliary coupling circuit 2 in this disclosure does not lead to an increase in manufacturing steps.

[0046] In practical applications, the closer the first auxiliary coupling circuit 2 is to the corresponding power divider circuit 1, the greater their coupling degree. However, due to the influence of manufacturing precision, the more coupled circuits, the greater the loss to the main array. Therefore, considering both the manufacturing process precision and the requirements for inductive coupling, in some embodiments, the minimum spacing between the first auxiliary coupling circuit 2 and the two adjacent power divider circuits 1 in the first direction X is greater than or equal to 0.15 mm and less than or equal to 0.25 mm (e.g., 0.2 mm). The coupling length between the first auxiliary coupling circuit 2 and the corresponding power divider circuit 1 is approximately one-quarter wavelength (e.g., the coupling length is in the range of one-fifth to one-third wavelength).

[0047] In some embodiments, the linewidth of the first auxiliary coupling circuit 2 is 50Ω.

[0048] Figure 4 for Figure 2 An enlarged schematic diagram of region A in the middle. For example... Figure 4As shown, in some embodiments, the first auxiliary coupling circuit 2 includes: a first coupling part 201, a second coupling part 202 and a first connecting part 203. The first coupling part 201 and the second coupling part 202 both extend along the second direction Y, and the first connecting part 203 extends along the first direction X. The first direction X intersects with the second direction Y.

[0049] The first coupling part 201 and the second coupling part 202 are respectively close to the two adjacent power divider circuits 1 in the first direction X corresponding to the first auxiliary coupling circuit 2, and the first coupling part 201 and the second coupling part 202 are respectively arranged opposite to the two corresponding power divider circuits 1 in the first direction X, so as to form inductive coupling with the corresponding power divider circuits 1.

[0050] The first connecting part 203 is located between the first coupling part 201 and the second coupling part 202, and both ends of the first connecting part 203 are connected to the first coupling part 201 and the second coupling part 202, respectively.

[0051] See also Figures 2 to 4 As shown, in some embodiments, within the same power divider circuit group GP, at least two isolation sections 4 are formed between two adjacent power divider circuits 1 at intervals along the second direction Y; within the same first auxiliary coupling circuit 2, the first coupling part 201 and the second coupling part 202 are located on opposite sides of the isolation section 4, and the first connecting part 203 passes through the interval area 4a between two adjacent isolation sections 4 to connect with the first coupling part 201 and the second coupling part 202.

[0052] In some embodiments, the lengths of the first coupling portion 201 and the second coupling portion 202 are approximately one-quarter of a wavelength (e.g., between one-fifth and one-third of a wavelength).

[0053] In some embodiments, the power divider board 100 is provided with a slot corresponding to the position where the isolation section 4 is to be placed, and the isolation section 4 is fixed to the power divider board by inserting it into the corresponding slot. Alternatively, the isolation section 4 can be soldered onto the power divider board 100 by a reflow soldering process.

[0054] In some embodiments, isolation segment 4 can be a PCB board.

[0055] In this disclosure, the isolation segment 4 can be used to increase the isolation between two adjacent power divider circuits 1 in the first direction X (reducing the coupling), and the first auxiliary coupling circuit 2 can be used to increase the coupling between two adjacent power divider circuits 1. In practical applications, the location, formation, and size of the isolation segment 4 and the first auxiliary coupling circuit 2 can be designed and adjusted accordingly to meet the actual coupling requirements.

[0056] Furthermore, by adjusting the positions of the isolation section 4 and the first auxiliary coupling circuit 2 located between two adjacent power divider circuits 1 in the first direction X, the coupling degree of the two power divider circuits 1 at different positions can be controlled respectively; see [link to relevant documentation]. Figure 2 As shown, there is an isolation section 4 between part P1 on power divider circuit 1a and part P1 on power divider circuit 1b, and there is no first auxiliary coupling circuit 2. There is both an isolation section 4 and a first auxiliary coupling circuit 2 between part P2 on power divider circuit 1a and part P2 on power divider circuit 12. At this time, the coupling degree between part P1 on power divider circuit 1a and part P1 on power divider circuit 1b is less than the coupling degree between part P2 on power divider circuit 1a and part P2 on power divider circuit 12.

[0057] See you again Figure 2 As shown, in some embodiments, the power divider circuit 1 includes two power molecule circuits 10, which are arranged axially symmetrically about a first axis of symmetry D parallel to the second direction Y. The power molecule circuit includes a first-stage power molecule circuit 10a. The first-stage power molecule circuit 10a includes a first main line 101, a first branch line 102, and a second branch line 103. The first main line 101 is configured with a second branch line 11 connected to the first main line 101. The first branch line 102 is configured with a first branch extension segment 12 connected to the first branch line 102. The second branch line 103 is configured with a second branch extension segment 13 connected to the second branch line 103. The first branch extension segment 12, the first branch line 102, the second branch line 103, and the first branch extension segment 12 are connected sequentially along the second direction Y. The second branch line 11 is located on the side of the first branch extension segment 12 away from the first axis of symmetry D. The first auxiliary coupling circuit 2 is located between two adjacent second branch extension segments 13 in the corresponding two power divider circuits 1.

[0058] In some embodiments, the first-stage power molecule circuit 10a is a Wilkinson circuit.

[0059] See also Figure 2 As shown, in some embodiments, the number of power divider circuit groups GP is M, and the M power divider circuit groups GP are arranged sequentially along the second direction Y, where M ≥ 2 and M is an integer. The M × N power divider circuits 1 included in the power divider circuit group GP are arranged in an array along the first direction X and the second direction Y. Figure 2 The example given is only the case where M is 2.

[0060] Figure 5 for Figure 2 An enlarged schematic diagram of region B in the middle. (See attached image.) Figure 2 and Figure 5As shown, at least one second auxiliary coupling circuit 3 is provided between at least two adjacent power divider circuits 1 in the second direction Y. The second auxiliary coupling circuit 3 is configured to form inductive coupling with both adjacent power divider circuits 1 in the second direction Y, so as to improve the coupling degree between the two adjacent power divider circuits 1 in the second direction Y.

[0061] In this embodiment of the disclosure, by setting a corresponding second auxiliary coupling circuit between two adjacent power divider circuits in the second direction, the second auxiliary coupling circuit can form inductive coupling with the two adjacent power divider circuits in the second direction respectively, so as to improve the coupling degree between the two adjacent power divider circuits in the second direction and meet the coupling degree requirements of the system end of the 5G communication network for the power divider circuits.

[0062] In some embodiments, the second auxiliary coupling circuit 3 is arranged on the same layer as the corresponding two power divider circuits 1 and spaced apart, and the second auxiliary coupling circuit 3 is floating.

[0063] Similar to the arrangement of the first auxiliary coupling circuit 2, in this disclosure, by setting the second auxiliary coupling circuit 3 and the power divider circuit 1 on the same layer, the conductive layer originally used to prepare the power divider circuit 1 can be patterned based on the existing photolithography or laser engraving process, so that the second auxiliary coupling circuit 3 and the power divider circuit 1 can be prepared simultaneously; therefore, the addition of the second auxiliary coupling circuit 3 in this disclosure will not lead to an increase in the production process steps.

[0064] Considering the precision of the manufacturing process and the requirements of inductive coupling, the minimum spacing between the second auxiliary coupling circuit 3 and the two corresponding power divider circuits 1 in the first direction X is greater than or equal to 0.15 mm and less than or equal to 0.25 mm (e.g., 0.2 mm). The coupling length between the second auxiliary coupling circuit 3 and the corresponding power divider circuit 1 is approximately one-quarter wavelength (e.g., the coupling length is in the range of one-fifth to one-third wavelength).

[0065] In some embodiments, the linewidth of the second auxiliary coupling circuit 3 is 50Ω.

[0066] In some embodiments, the first auxiliary coupling circuit 2, the second auxiliary coupling circuit 3, and the power divider circuit 1 are arranged on the same layer.

[0067] In some embodiments, the second auxiliary coupling circuit 3 includes a third coupling portion 301, a fourth coupling portion 302, and a second connecting portion 303, wherein the third coupling portion 301, the fourth coupling portion 302, and the second connecting portion 303 all extend along the second direction Y.

[0068] The third coupling part 301 and the fourth coupling part 302 are respectively close to the two adjacent power divider circuits 1 in the second direction Y corresponding to the second auxiliary coupling circuit 3, and the third coupling part 301 and the fourth coupling part 302 are respectively arranged opposite to the two corresponding power divider circuits 1 in the first direction X, so as to form inductive coupling with the corresponding power divider circuits 1; the second connecting part 303 is located between the third coupling part 301 and the fourth coupling part 302, and the two ends of the second connecting part 303 are respectively connected to the third coupling part 301 and the fourth coupling part 302.

[0069] In some embodiments, the lengths of the third coupling portion 301 and the fourth coupling portion 302 are approximately one-quarter of a wavelength (e.g., between one-fifth and one-third of a wavelength).

[0070] See also Figure 2 As shown, in some embodiments, at least partially, two corresponding second auxiliary coupling circuits 3 are provided between two adjacent power divider circuits 1 in the second direction Y; the two second auxiliary coupling circuits 3 are respectively located on opposite sides of the corresponding power divider circuit 1 in the first direction X. This design can further improve the coupling degree between two adjacent power divider circuits 1 in the second direction Y.

[0071] It should be noted that, in Figure 2 The illustrated examples only demonstrate that the power divider circuit 10 includes a first-stage power divider circuit 10a and two second-stage power divider circuits 10b, and that both the first-stage power divider circuit 10a and the second-stage power divider circuit 10b are 1-to-2 power divider circuits; in this case, the corresponding power divider circuit 1 is a 1-to-4 power divider circuit 1. The 1-to-4 power divider circuit 1 example is for illustrative purposes only and does not limit the technical solution of this disclosure. In this disclosure, the power divider circuit 1 can also be a 1-to-2 power divider circuit 1, a 1-to-3 power divider circuit, or even a 1-to-multiple power divider circuit 1. This disclosure does not limit the specific circuit structure of the power divider circuit 1.

[0072] It should be noted that in some embodiments, the antenna structure may also include structures such as reflectors and radomes, which correspond to other necessary structures in the antenna structure, and will not be described in detail here.

[0073] Figure 6 This is a schematic diagram of the structure of an antenna filter unit provided in an embodiment of the present disclosure, as shown below. Figure 6 As shown, the antenna filter unit includes a filter 2000 and an antenna structure 1000. The antenna structure 1000 adopts the antenna structure 1000 provided in the previous embodiment. For a detailed description of the antenna structure 1000, please refer to the content in the previous embodiment, which will not be repeated here.

[0074] In some embodiments, the input port end face of the filter 2000 also serves as a reflector of the antenna structure. By designing the input port end of the filter 2000 to simultaneously function as a component of both the filter 2000 and the antenna structure 1000, the structure of the AFU antenna can be simplified and miniaturized, significantly reducing its manufacturing cost. Preferably, the input port end of the filter 2000 is made of silver, copper, aluminum, or aluminum alloy, which provides better reflection of antenna signals, thus enhancing its effectiveness as an antenna reflector.

[0075] In this disclosure, by setting a first auxiliary coupling circuit / a second auxiliary coupling circuit, the coupling degree between two adjacent power divider circuits can be effectively improved, so that the AFU can meet the system requirements of the 5G communication network.

[0076] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. An antenna structure, characterized in that, include: The power divider board and a power divider circuit array and a radiating unit array located on one side of the power divider board, wherein the power divider circuit array includes: at least one power divider circuit group, wherein the power divider circuit group includes N power divider circuits arranged along a first direction, where N≥2 and N is an integer; The radiation unit array includes multiple radiation units, and each radiation unit is electrically connected to the corresponding power divider circuit. Within the same power divider circuit group, at least a corresponding first auxiliary coupling circuit is provided between at least a portion of two adjacent power divider circuits in the first direction. The first auxiliary coupling circuit is configured to form inductive coupling with both of the corresponding adjacent power divider circuits in the first direction, thereby improving the coupling degree between the corresponding adjacent power divider circuits in the first direction. The first auxiliary coupling circuit includes: a first coupling part, a second coupling part, and a first connecting part. The first coupling part and the second coupling part both extend along a second direction, and the first connecting part extends along a first direction. The first direction intersects with the second direction. The first coupling portion and the second coupling portion are respectively close to the two power divider circuits that are adjacent in the first direction to the first auxiliary coupling circuit, and the first coupling portion and the second coupling portion are respectively arranged opposite to the two corresponding power divider circuits in the first direction to form inductive coupling with the corresponding power divider circuits; The first connecting part is located between the first coupling part and the second coupling part, and both ends of the first connecting part are connected to the first coupling part and the second coupling part, respectively.

2. The antenna structure according to claim 1, characterized in that, The first auxiliary coupling circuit is arranged on the same layer as the two corresponding power divider circuits and spaced apart, and the first auxiliary coupling circuit is floating. The minimum spacing between the first auxiliary coupling circuit and the two corresponding adjacent power divider circuits in the first direction is greater than or equal to 0.15 mm and less than or equal to 0.25 mm in the first direction.

3. The antenna structure according to claim 1, characterized in that, Within the same power divider circuit group, at least two isolation sections are formed between two adjacent power divider circuits, spaced apart along the second direction; Within the same first auxiliary coupling circuit, the first coupling portion and the second coupling portion are located on opposite sides of the isolation section, and the first connecting portion passes through the gap between two adjacent isolation sections to connect with the first coupling portion and the second coupling portion.

4. The antenna structure according to claim 1, characterized in that, The power divider circuit includes two power molecule circuits, which are arranged axially symmetrically about a first axis of symmetry parallel to the second direction. The power molecule circuit includes a first-stage power molecule circuit. The first-stage power molecule circuit includes: a first main line, a first branch line, and a second branch line. The first main line is configured with a first main extension segment connected to the first main line. The first branch line is configured with a first branch extension segment connected to the first branch line. The second branch line is configured with a second branch extension segment connected to the second branch line. The first branch extension segment, the first branch line, the second branch line, and the first branch extension segment are connected sequentially along the second direction. The first main extension segment is located on the side of the first branch extension segment that is away from the first axis of symmetry; The first auxiliary coupling circuit is located between the extension segments of two adjacent second branches in the corresponding two power divider circuits.

5. The antenna structure according to claim 1, characterized in that, The number of power divider circuit groups is M, and the M power divider circuit groups are arranged sequentially along the second direction, M≥2 and M is an integer. The M×N power divider circuits included in the power divider circuit group are arranged in an array along the first direction and the second direction. At least a portion of the two adjacent power dividers in the second direction are provided with at least one corresponding second auxiliary coupling circuit, the second auxiliary coupling circuit being configured to form inductive coupling with both of the corresponding two adjacent power dividers in the second direction, so as to improve the coupling degree between the corresponding two adjacent power dividers in the second direction.

6. The antenna structure according to claim 5, characterized in that, The second auxiliary coupling circuit is arranged on the same layer as the two corresponding power divider circuits and spaced apart, and the second auxiliary coupling circuit is floating. The minimum spacing between the second auxiliary coupling circuit and the corresponding two power divider circuits in the first direction is greater than or equal to 0.15 mm and less than or equal to 0.25 mm.

7. The antenna structure according to claim 5, characterized in that, The second auxiliary coupling circuit includes a third coupling part, a fourth coupling part, and a second connecting part, wherein the third coupling part, the fourth coupling part, and the second connecting part all extend along a second direction; The third coupling part and the fourth coupling part are respectively close to the two adjacent power divider circuits in the second direction corresponding to the second auxiliary coupling circuit, and the third coupling part and the fourth coupling part are respectively arranged opposite to the two corresponding power divider circuits in the first direction to form inductive coupling with the corresponding power divider circuits; The second connecting part is located between the third coupling part and the fourth coupling part, and both ends of the second connecting part are connected to the third coupling part and the fourth coupling part, respectively.

8. The antenna structure according to claim 5, characterized in that, At least some of the power divider circuits that are adjacent in the second direction are provided with two corresponding second auxiliary coupling circuits; The two second auxiliary coupling circuits are respectively located on opposite sides of the corresponding power divider circuit in the first direction.

9. An antenna filter unit, characterized in that, include: The filter and the antenna structure as described in any one of claims 1 to 8.

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