CN-116742331-B - Antenna structure and antenna filter unit

CN116742331BCN 116742331 BCN116742331 BCN 116742331BCN-116742331-B

Abstract

The embodiment of the disclosure provides an antenna structure and an antenna filter unit, wherein the antenna structure comprises a power division plate, a power division circuit array and a radiation unit array, wherein the power division circuit array is positioned on one side of the power division plate, the power division circuit array comprises at least one power division circuit group, the power division circuit group comprises N power division circuits which are distributed along a first direction, N is more than or equal to 2 and N is an integer, at least one corresponding first auxiliary coupling circuit is arranged between two adjacent power division circuits at least in the first direction in the same power division circuit group, and the first auxiliary coupling circuit is configured to be capable of forming inductive coupling with each corresponding two adjacent power division circuits in the first direction so as to improve the coupling degree between the corresponding two adjacent power division circuits in the first direction. According to the technical scheme, the first auxiliary coupling circuit is arranged, so that the coupling degree between the power dividing circuits in the power dividing circuit array can be effectively improved.

Inventors

ZHENG ZHIQING
HAO MINGYU
GAO TAO
LIU MINGXING

Assignees

武汉凡谷电子技术股份有限公司

Dates

Publication Date: 20260505
Application Date: 20230720

Claims (9)

1. The antenna structure is characterized by comprising a power division plate, a power division circuit array and a radiation unit array, wherein the power division circuit array and the radiation unit array are positioned on one side of the power division plate, the power division circuit array comprises at least one power division circuit group, the power division circuit group comprises N power division circuits which are distributed along a first direction, N is more than or equal to 2, and N is an integer; The radiating element array comprises a plurality of radiating elements, and the radiating elements are electrically connected with the corresponding power dividing circuits; In the same power division circuit group, at least one corresponding first auxiliary coupling circuit is arranged between two adjacent power division circuits at least in part in a first direction, and the first auxiliary coupling circuit is configured to be capable of forming inductive coupling with each corresponding two adjacent power division circuits in the first direction so as to improve the coupling degree between the corresponding two adjacent power division circuits in the first direction; the first auxiliary coupling circuit comprises a first coupling part, a second coupling part and a first connecting part, wherein the first coupling part and the second coupling part extend along a second direction, the first connecting part extends along a first direction, and the first direction is intersected with the second direction; The first coupling part and the second coupling part are respectively close to two power division circuits adjacent in the first direction corresponding to the first auxiliary coupling circuit, and are respectively opposite to the two corresponding power division circuits in the first direction so as to form inductive coupling with the corresponding power division circuits; the first connecting part is positioned between the first coupling part and the second coupling part, and two ends of the first connecting part are respectively connected with the first coupling part and the second coupling part.
2. The antenna structure according to claim 1, wherein the first auxiliary coupling circuit and the corresponding two power dividing circuits are arranged at the same layer and at intervals, and the first auxiliary coupling circuit is floating; the minimum interval between the first auxiliary coupling circuit and the corresponding two power dividing circuits adjacent in the first direction is more than or equal to 0.15mm and less than or equal to 0.25mm.
3. The antenna structure according to claim 1, wherein at least two isolation segments arranged at intervals along the second direction are formed between two adjacent power dividing circuits in the same power dividing circuit group; In the same first auxiliary coupling circuit, the first coupling portion and the second coupling portion are located at opposite sides of the isolation segments, and the first connection portion passes through a spacer between two adjacent isolation segments to be connected with the first coupling portion and the second coupling portion.
4. The antenna structure of claim 1, wherein the power dividing circuit comprises two power molecule circuits, the two power molecule circuits are axisymmetrically arranged with a first symmetry axis parallel to a second direction, and the power molecule circuits comprise a first-stage power molecule circuit; The first-stage power molecular circuit comprises a first main line, a first branch line and a second branch line, wherein the first main line is provided with a first main extension line segment connected with the first main line, the first branch line is provided with a first branch extension line segment connected with the first branch line, the second branch line is provided with a second branch extension line segment connected with the second branch line, and the first branch extension line segment, the first branch line, the second branch line and the first branch extension line segment are sequentially connected along the second direction; the first main extension line segment is positioned at one side of the first branch extension line segment away from the first symmetry axis; the first auxiliary coupling circuit is positioned between two adjacent second branch extension line segments in the corresponding two power dividing circuits.
5. The antenna structure according to claim 1, wherein the number of the power dividing circuit groups is M, the M power dividing circuit groups are sequentially arranged along the second direction, M is greater than or equal to 2, and M is an integer, and m×n power dividing circuits included in the power dividing circuit groups are arranged in an array along the first direction and the second direction; At least one corresponding second auxiliary coupling circuit is arranged between two adjacent power division circuits at least in the second direction, and the second auxiliary coupling circuit is configured to be capable of forming inductive coupling with each corresponding two adjacent power division circuits in the second direction so as to improve the coupling degree between the corresponding two adjacent power division circuits in the second direction.
6. The antenna structure of claim 5, wherein the second auxiliary coupling circuit is arranged at the same layer as and at intervals from the two corresponding power dividing circuits, and the second auxiliary coupling circuit is floating; the minimum interval between the second auxiliary coupling circuit and the corresponding two power dividing circuits in the first direction is more than or equal to 0.15mm and less than or equal to 0.25mm.
7. The antenna structure of claim 5, wherein the second auxiliary coupling circuit comprises a third coupling portion, a fourth coupling portion, and a second connecting portion, each of the third coupling portion, the fourth coupling portion, and the second connecting portion extending in a second direction; The third coupling part and the fourth coupling part are respectively close to two power division circuits adjacent in the second direction corresponding to the second auxiliary coupling circuit, and are respectively opposite to the two corresponding power division circuits in the first direction so as to form inductive coupling with the corresponding power division circuits; the second connecting part is positioned between the third coupling part and the fourth coupling part, and two ends of the second connecting part are respectively connected with the third coupling part and the fourth coupling part.
8. The antenna structure according to claim 5, wherein two corresponding second auxiliary coupling circuits are provided between two of the power dividing circuits adjacent at least in part in the second direction; The two second auxiliary coupling circuits are respectively positioned at two opposite sides of the corresponding power dividing circuit in the first direction.
9. An antenna filter unit comprising a filter and an antenna structure as claimed in any one of claims 1 to 8.

Description

Antenna structure and antenna filter unit Technical Field The present disclosure relates to the field of communications technologies, and in particular, to an antenna structure and an antenna filter unit. Background The antenna filter unit (ANTENNA FILTER Units, AFU for short) is a new integrated industry technology for integrating an antenna structure and a filter, and the 5G-era AFU design can achieve the purposes of reducing impedance links, reducing system volume, reducing system cost, improving system performance and the like by integrating the antenna structure and the filter and simultaneously eliminating connectors. Disclosure of Invention In a first aspect, an embodiment of the present disclosure provides an antenna structure, including a power dividing board, and a power dividing circuit array and a radiating element array located at one side of the power dividing board, where the power dividing circuit array includes at least one power dividing circuit group, the power dividing circuit group includes N power dividing circuits arranged along a first direction, N is greater than or equal to 2, and N is an integer; The radiating element array comprises a plurality of radiating elements, and the radiating elements are electrically connected with the corresponding power dividing circuits; And in the same power division circuit group, at least one corresponding first auxiliary coupling circuit is arranged between two adjacent power division circuits at least in part in the first direction, and the first auxiliary coupling circuit is configured to be capable of forming inductive coupling with each corresponding two adjacent power division circuits in the first direction so as to improve the coupling degree between the corresponding two adjacent power division circuits in the first direction. In some embodiments, the first auxiliary coupling circuit and the corresponding two power dividing circuits are arranged at the same layer and at intervals, and the first auxiliary coupling circuit is floating; The minimum interval between the first auxiliary coupling circuit and the corresponding two power dividing circuits adjacent in the first direction is more than 0.15mm and less than or equal to 0.25mm. In some embodiments, the first auxiliary coupling circuit includes a first coupling portion, a second coupling portion, and a first connecting portion, the first coupling portion and the second coupling portion each extending in a second direction, the first connecting portion extending in a first direction, the first direction intersecting the second direction; The first coupling part and the second coupling part are respectively close to two power division circuits adjacent in the first direction corresponding to the first auxiliary coupling circuit, and are respectively opposite to the two corresponding power division circuits in the first direction so as to form inductive coupling with the corresponding power division circuits; the first connecting part is positioned between the first coupling part and the second coupling part, and two ends of the first connecting part are respectively connected with the first coupling part and the second coupling part. In some embodiments, at least two isolation sections which are arranged at intervals along the second direction are formed between two adjacent power division circuits in the same power division circuit group; In the same first auxiliary coupling circuit, the first coupling portion and the second coupling portion are located at opposite sides of the isolation segments, and the first connection portion passes through a spacer between two adjacent isolation segments to be connected with the first coupling portion and the second coupling portion. In some embodiments, the power dividing circuit comprises two power molecule circuits, wherein the two power molecule circuits are arranged in an axisymmetric way along a first symmetry axis parallel to a second direction, and the power molecule circuits comprise a first-stage power molecule circuit; The first-stage power molecular circuit comprises a first main line, a first branch line and a second branch line, wherein the first main line is provided with a first main extension line segment connected with the first main line, the first branch line is provided with a first branch extension line segment connected with the first branch line, the second branch line is provided with a second branch extension line segment connected with the second branch line, and the first branch extension line segment, the first branch line, the second branch line and the first branch extension line segment are sequentially connected along the second direction; the first main extension line segment is positioned at one side of the first branch extension line segment away from the first symmetry axis; the first auxiliary coupling circuit is positioned between two adjacent second branch extension line segments in the corresponding two powe