CN116885428A

CN116885428A - Decoupling radiation unit and multi-frequency common-caliber antenna

Info

Publication number: CN116885428A
Application number: CN202311056421.1A
Authority: CN
Inventors: 郑之伦; 刘培涛; 李明超; 贾飞飞; 黎伟韶; 梁嘉驹
Original assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2023-10-13

Abstract

The application relates to a decoupling radiation unit and a multi-frequency common-caliber antenna, wherein the decoupling radiation unit comprises two pairs of radiation arms which are orthogonally arranged in polarization. The two pairs of radiation arms are in a central symmetrical structure about the same central point, each radiation arm comprises a feed part and a radiation ring, the radiation rings are connected with the feed part to form a closed loop structure, each radiation ring comprises at least two inhibition structures, each inhibition structure is at least one inhibition structure, the frequency bands which can be inhibited by different types of inhibition structures are different, and all the inhibition structures of the radiation rings are connected in sequence. On one hand, the radiation ring of the decoupling radiation unit adopts at least two inhibition structures, and each inhibition structure is set to be at least one, so that ultra-wideband inhibition on high-frequency signals is realized; on the other hand, the same decoupling radiation unit can be adopted for different multi-frequency common-caliber antennas, so that the universality and the antenna productivity are improved, and the antenna cost is reduced; in addition, the multi-frequency common-caliber antenna which is more complex is easy to realize, the size is smaller, and the performance is better.

Description

Decoupling radiation unit and multi-frequency common-caliber antenna

Technical Field

The application relates to the technical field of antennas, in particular to a decoupling radiation unit and a multi-frequency common-caliber antenna.

Background

In order to reduce the cost of base station site leasing and to facilitate installation of multi-mode multi-frequency co-aperture antennas, operators generally require that the antenna be as small in size and as light in weight as possible, and therefore the need for integrating antennas in multiple frequency bands on a limited space platform is becoming increasingly strong. But the antennas of all the frequency bands cannot be simply spliced together, and when the antennas of all the frequency bands are integrated on the same platform, the antennas of all the frequency bands are mutually coupled and scattered, so that the radiation performance of the antennas is affected.

The array layout with high frequency and low frequency arranged in parallel is a main scheme of the current multi-frequency electrically-tunable base station antenna, and in order to reduce the section size of the antenna and inhibit the mutual coupling of the high frequency and the low frequency, the low frequency radiation surface mostly adopts a structure for decoupling and inhibiting the parasitic radiation of the high frequency, thereby realizing the better index and design size of the antenna.

The multi-frequency common aperture antenna in the related art needs to support the integration of multiple frequency bands including, but not limited to, 690MHz-960MHz, 1427MHz-2690MHz, 3300MHz-4200MHz, etc., which requires that the decoupling suppression structure of the low frequency radiation surface has a wider suppression bandwidth to ensure the performance of each high frequency antenna.

Disclosure of Invention

Based on this, it is necessary to overcome the defects in the prior art, and to provide a decoupling radiating element and a multi-frequency common-caliber antenna, which can suppress the ultra-wideband high-frequency signal.

A decoupling radiating element, the decoupling radiating element comprising:

two pairs of radiation arms arranged in a polarization orthogonal mode, each radiation arm comprises a feed part and a radiation ring, the radiation ring is connected with the feed part to form a closed loop structure, the radiation ring comprises at least two inhibition structures, each inhibition structure is at least one, frequency bands which can be inhibited by different types of inhibition structures are different, and all the inhibition structures of the radiation ring are connected in sequence.

In one embodiment, the at least two inhibiting structures comprise at least two first inhibiting structures and at least two second inhibiting structures, the first inhibiting structures being alternately arranged with the second inhibiting structures; alternatively, the at least two inhibiting structures include two first inhibiting structures and one second inhibiting structure, the first inhibiting structures and the second inhibiting structures being alternately arranged; alternatively, the at least two inhibiting structures include a first inhibiting structure and two second inhibiting structures, the first inhibiting structure and the second inhibiting structure being alternately arranged.

In one embodiment, each suppressing structure includes a first suppressing portion and a second suppressing portion connected in series in turn, each of the first suppressing portion and the second suppressing portion having a U shape; alternatively, each of the suppressing structures includes a first suppressing portion, a second suppressing portion, and a third suppressing portion that are sequentially connected in series, each of the first suppressing portion, the second suppressing portion, and the third suppressing portion being in a U shape.

In one embodiment, for each of the suppression structures, the opening orientation of the second suppression portion is disposed at an angle or opposite to the opening orientation of the first suppression portion, and the opening orientation of the third suppression portion is disposed opposite, or the same as the opening orientation of the third suppression portion, respectively.

In one embodiment, each of the first suppressing portion, the second suppressing portion, and the third suppressing portion includes two first line segments arranged at opposite intervals and a second line segment connecting the two first line segments, where the second line segment and the first line segment form an included angle; wherein the first line length of the second inhibition portion of one inhibition structure is larger than the first line length of the second inhibition portion of the other inhibition structure.

In one embodiment, the opening of the second suppressing portion faces away from the middle portion of the radiation ring, and the second suppressing portion is concave toward the area formed by encircling the radiation ring.

In one embodiment, the first line segment of one of the second suppressing portions and the second line segment of the adjacent first suppressing portion overlap each other, and the second line segment of the other of the second suppressing portions and the second line segment of the adjacent third suppressing portion overlap each other.

In one embodiment, one of the first segments of the second inhibitor is connected to the second segment of the first inhibitor adjacent thereto, and the other of the first segments of the second inhibitor is connected to the second segment of the third inhibitor adjacent thereto.

In one embodiment, one of the first wire segments on the first suppression portion and one of the first wire segments on the third suppression portion are connected in series into the radiation ring, and the other first wire segment on the first suppression portion and the other first wire segment on the third suppression portion are each provided with a free end.

In one embodiment, the decoupling radiation unit further comprises a balun, which is electrically connected to the feed.

A multi-frequency co-aperture antenna, the multi-frequency co-aperture antenna comprising: the low-frequency array and the high-frequency array are arranged on the reflecting plate, the low-frequency array comprises a plurality of low-frequency radiating units, the decoupling radiating units as claimed in any one of claims 1 to 10 are adopted for the low-frequency radiating units, the projection of the low-frequency array on the reflecting plate is set to be a first projection, the projection of the high-frequency array on the reflecting plate is set to be a second projection, and the first projection and the second projection are at least partially overlapped.

In one embodiment, the low-frequency array is used for receiving and/or transmitting electromagnetic wave signals in the frequency range of 690MHz to 960 MHz; the high-frequency array comprises a first high-frequency array and a second high-frequency array, wherein the first high-frequency array is used for receiving and/or transmitting electromagnetic wave signals in the frequency range of 1400 MHz-2700 MHz, and the second high-frequency array is used for receiving and/or transmitting electromagnetic wave signals in the frequency range of 3300MHz-4200 MHz.

In one embodiment, the high-frequency array includes a first high-frequency array including a plurality of first high-frequency radiating elements, four radiating arms of each of the low-frequency radiating elements respectively correspond to four first high-frequency radiating element positions, and projections of radiating arms of the low-frequency radiating elements on the reflecting plate at least partially overlap with projections of the first high-frequency radiating elements corresponding to the positions on the reflecting plate.

In one embodiment, the high-frequency array includes a first high-frequency array and a second high-frequency array, the first high-frequency array includes a plurality of first high-frequency radiating elements, the second high-frequency array includes a plurality of second high-frequency radiating elements, and projections of the low-frequency radiating elements on the reflecting plate coincide with projections of at least one of the first high-frequency radiating elements on the reflecting plate and projections of at least one of the second high-frequency radiating elements on the reflecting plate, respectively.

In one embodiment, each of the low frequency radiating elements corresponds to four first high frequency radiating element positions, and each of the low frequency radiating elements also corresponds to four second high frequency radiating element positions; each of the first high-frequency radiating elements corresponds to four of the second high-frequency radiating elements.

On one hand, the radiation ring of the decoupling radiation unit adopts at least two suppression structures which are continuously arranged, and each suppression structure is at least one, so that ultra-wideband suppression of high-frequency signals is realized; on the other hand, the same decoupling radiation unit can be adopted for different multi-frequency common-caliber antennas, so that the universality and the antenna productivity are improved, and the antenna cost is reduced; in addition, the multi-frequency common-caliber antenna which is more complex is easy to realize, the size is smaller, and the performance is better.

Drawings

Fig. 1 is a schematic structural diagram of a decoupling radiation unit according to an embodiment of the present application.

Fig. 2 is a schematic diagram of the structure of the radiating arms of the decoupled radiating element of fig. 1.

Fig. 3 is a schematic structural diagram of a decoupling radiation cell according to another embodiment of the present application.

Fig. 4 is a schematic diagram of the structure of the radiating arms of the decoupled radiating element of fig. 3.

Fig. 5 is a schematic structural diagram of a multi-frequency common-aperture antenna according to an embodiment of the application.

Fig. 6 is a schematic structural diagram of a multi-frequency common-aperture antenna according to another embodiment of the present application.

Fig. 7 is a schematic structural diagram of a multi-frequency common-aperture antenna according to another embodiment of the present application.

10. Decoupling the radiating element; 11. a radiating arm; 111. a power feeding section; 112. a radiating ring; 1121. a suppression structure; 11211. a first suppressing portion; 11212. a second suppressing portion; 11213. a third suppressing portion; l1, a first line segment; l2, a second line segment; 1122. a first inhibiting structure; 1123. a second inhibiting structure; 20. a low frequency array; 30. a first high frequency array; 31. a first high-frequency radiating unit; 40. a second high frequency array; 41. a second high-frequency radiating unit; 50. and a reflecting plate.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

Referring to fig. 1 and 2, fig. 1 shows a schematic structure of a decoupling radiation unit 10 according to an embodiment of the present application. Fig. 2 shows a schematic diagram of the structure of the radiating arms 11 of the decoupling radiating element 10 in fig. 1. A decoupling radiation cell 10 according to an embodiment of the present application is provided, the decoupling radiation cell 10 comprising two pairs of radiation arms 11 arranged orthogonally with respect to polarization. The two pairs of radiating arms 11 are in a central symmetrical structure about the same center point, and each radiating arm 11 includes a feeding portion 111 and a radiating loop 112. The radiation loop 112 is connected to the power feeding portion 111 to form a closed loop structure, the radiation loop 112 includes at least two types of suppression structures 1121, each type of suppression structure 1121 is at least one, the frequency bands that can be suppressed by different types of suppression structures 1121 are different, and all the suppression structures 1121 of the radiation loop 112 are connected in sequence. In particular, all the inhibition structures of the radiating loops are connected end to end in sequence.

When the electrical length parameter of the suppression structure 1121 is adjusted, scattering suppression of signals of different bandwidths can be achieved. The electrical length parameters of each kind of suppression structures 1121 can be flexibly adjusted and set according to actual requirements, so that scattering suppression on preset bandwidth signals can be realized. When the electrical length parameter of the suppression structure 1121 is larger, the signal scattering suppression effect on lower frequencies is more obvious, and the signal scattering suppression effect on higher frequencies is weakened; conversely, when the electrical length parameter of the suppression structure 1121 is smaller, the signal scattering suppression effect on higher frequencies is more pronounced and the signal scattering suppression effect on lower frequencies is weaker.

In this case, the radiation loop 112 is connected to the power feeding portion 111 to form a closed loop structure, that is, the radiation arm 11 has a closed loop structure.

Specifically, the radiation arm 11 is in a closed loop shape and hollow in the inside, and when the decoupling radiation unit 10 and the high-frequency radiation unit are arranged in a co-array, on the one hand, the suppression structure 1121 of the decoupling radiation unit 10 can suppress the high-frequency bandwidth; on the other hand, the hollow radiation arm 11 of the decoupling radiation unit 10 can facilitate transmission of the high frequency signal emitted by the high frequency radiation unit. Therefore, the radiation arm 11 is less involved in mutual coupling and scattering of the high-frequency radiation units, and the radiation performance of the high-frequency antenna in the co-array is improved.

On the one hand, the radiation ring 112 of the decoupling radiation unit 10 adopts at least two suppression structures 1121 arranged continuously, and each suppression structure 1121 is set to be at least one, so that ultra-wideband suppression of high-frequency signals is realized; on the other hand, the same decoupling radiation unit 10 can be adopted for different multi-frequency common-caliber antennas, so that the universality and the antenna producibility are improved, and the antenna cost is reduced; in addition, the multi-frequency common-caliber antenna which is more complex is easy to realize, the size is smaller, and the performance is better.

In one embodiment, the at least two inhibiting structures 1121 include at least two first inhibiting structures 1122 and at least two second inhibiting structures 1123, the first inhibiting structures 1122 being alternately disposed with the second inhibiting structures 1123. In this way, a second suppression structure 1123 is disposed between every two adjacent first suppression structures 1122, and a first suppression structure 1122 is disposed between every two adjacent second suppression structures 1123, so that the suppression bandwidth of the decoupling radiation unit 10 on the high-frequency signal can be advantageously increased, and ultra-wideband suppression on the high-frequency signal can be realized.

In another embodiment, the at least two inhibiting structures 1121 include two first inhibiting structures 1122 and one second inhibiting structure 1123. The first inhibiting structures 1122 are alternately arranged with the second inhibiting structures 1123.

In yet another embodiment, the at least two inhibiting structures 1121 include one first inhibiting structure 1122 and two second inhibiting structures 1123. The first inhibiting structures 1122 are alternately arranged with the second inhibiting structures 1123.

Referring to fig. 1 and 2, in one embodiment, each inhibiting structure 1121 includes at least two inhibiting portions connected in series in turn. As an example, the at least two suppressing portions include a first suppressing portion 11211 and a second suppressing portion 11212 connected in series in order, and each of the first suppressing portion 11211 and the second suppressing portion 11212 has a U shape. As another example, the at least two suppression portions include not only the first suppression portion 11211, the second suppression portion 11212, but also the third suppression portion 11213, and the third suppression portion 11213 has a U shape.

In the present embodiment, the first suppressing portion 11211, the second suppressing portion 11212, and the third suppressing portion 11213, which are sequentially connected in series, are specifically described as examples, but the scope of the present application is not limited thereto.

The electrical length parameters of at least one of the first suppressing portion 11211, the second suppressing portion 11212, and the third suppressing portion 11213 are different for different types of suppressing structures 1121, and scattering suppression of different high-frequency signals can be achieved. The electrical length parameters of the first suppression portion 11211, the second suppression portion 11212, and the third suppression portion 11213 of each type of suppression structure 1121 can be flexibly adjusted and set according to actual requirements, so that scattering suppression of a preset high-frequency signal can be achieved. In particular, in the present embodiment, when two types of suppression structures 1121 are provided, one of the suppression structures 1121, that is, the first suppression structure 1122, for example, performs scattering suppression for one of the frequency bandwidths, that is, the first high frequency, which is selectable from 1400MHz to 2700 MHz; the other suppression structure 1121, i.e., the second suppression structure 1123, for example, implements scattering suppression for another frequency bandwidth, i.e., the second high frequency, optionally 3300MHz to 4200MHz. The electrical length parameter of the second suppressing portion 11212 of one suppressing structure 1121 is different from the electrical length parameter of the second suppressing portion 11212 of the other suppressing structure 1121, the electrical length parameter of the first suppressing portion 11211 of one suppressing structure 1121 is the same as or the deviation from the electrical length parameter of the first suppressing portion 11211 of the other suppressing structure 1121 is controlled within a first preset range, and the electrical length parameter of the third suppressing portion 11213 of one suppressing structure 1121 is the same as or the deviation from the electrical length parameter of the third suppressing portion 11213 of the other suppressing structure 1121 is controlled within a second preset range.

It should be noted that, for different types of suppressing structures 1121, there are many ways in which the openings of the first suppressing portion 11211, the second suppressing portion 11212, and the third suppressing portion 11213 are arranged, and the opening can be flexibly adjusted and set according to actual needs, which cannot be considered to be exhaustive.

Referring to fig. 2, in one embodiment, for each suppressing structure 1121, the opening direction (as indicated by arrow S2) of the second suppressing portion 11212 is set at an angle with respect to the opening direction (as indicated by arrow S1) of the first suppressing portion 11211 and the opening direction (as indicated by arrow S3) of the third suppressing portion 11213, and the included angle is set at, for example, 60 ° to 120 °, specifically, 60 °, 75 °, 90 °, 105 °, 120 °, and the like. Further, the opening direction of the first suppressing portion 11211 (as indicated by arrow S1) is disposed opposite to the opening direction of the third suppressing portion 11213 (as indicated by arrow S3).

Referring to fig. 3 and 4, in another embodiment, for each suppressing structure 1121, the opening direction of the second suppressing portion 11212 (as indicated by arrow S2) is opposite to the opening direction of the first suppressing portion 11211 (as indicated by arrow S1) and the opening direction of the third suppressing portion 11213 (as indicated by arrow S3), respectively. The opening of the first suppressing portion 11211 is oriented in the same direction as the opening of the third suppressing portion 11213. Of course, in other embodiments, the arrangement positions of the first suppressing portion 11211 and the third suppressing portion 11213 may be adjusted so that the opening of the first suppressing portion 11211 is opposite to or the same as the opening of the third suppressing portion 11213.

Referring to fig. 2 or fig. 4, in one embodiment, each of the first suppressing portion 11211, the second suppressing portion 11212, and the third suppressing portion 11213 includes two first line segments L1 and a second line segment L2 connecting the two first line segments L1. The second line segment L2 and the first line segment L1 are arranged at an included angle. The length of the first line segment L1 of the second suppressing portion 11212 of one suppressing structure 1121 is longer than the length of the first line segment L1 of the second suppressing portion 11212 of the other suppressing structure 1121. As described above, in the different types of suppressing structures 1121, as the length of the first line segment L1 of the second suppressing portion 11212 increases, the scattering suppressing effect on the high-frequency signal having a lower frequency decreases.

Referring to fig. 2 or fig. 4, specifically, the second line segment L2 is disposed perpendicular to the first line segment L1. In addition, opposite ends of the second line segment L2 are respectively connected to one ends of the two first line segments L1.

Referring to fig. 2 or 4, in one embodiment, the opening of the second suppressing portion 11212 faces (as indicated by arrow S2) away from the middle portion of the radiation ring 112. The second suppressing portion 11212 is recessed toward the region surrounded by the radiation ring 112. Specifically, the first line segment L1 of the second suppression portion 11212 extends toward the middle portion of the radiation ring 112 or extends toward the direction of the power feeding portion 111. In this way, when the length of the first line segment L1 of the second suppression portion 11212 needs to be increased to adapt to scattering suppression of the preset bandwidth of the high-frequency signal, the first line segment L1 may extend toward the middle portion of the radiation ring 112, and the size of the inner space of the radiation ring 112 is reasonably utilized, so that the caliber size of the radiation arm 11 can be reduced, and further the caliber size of the decoupling radiation unit 10 is reduced.

Referring to fig. 2, in one embodiment, for the second suppressing structure 1123, one of the first line segments L1 of the second suppressing portion 11212 and the second line segment L2 of the adjacent first suppressing portion 11211 overlap each other, and the other first line segment L1 of the second suppressing portion 11212 and the second line segment L2 of the adjacent third suppressing portion 11213 overlap each other. In this way, one of the first line segments L1 of the second suppressing portion 11212 and the second line segment L2 of the adjacent first suppressing portion 11211 share the same line segment, and the other first line segment L1 of the second suppressing portion 11212 and the second line segment L2 of the adjacent third suppressing portion 11213 share the same line segment.

The preset frequency band bandwidth is a first high frequency or a second high frequency, the first high frequency can be 1400 MHz-2700 MHz, and the second high frequency can be 3300MHz-4200 MHz.

Referring to fig. 2, in one embodiment, for the first suppressing structure 1122, one of the first line segments L1 of the second suppressing portion 11212 is connected to the second line segment L2 of the adjacent first suppressing portion 11211, and the other first line segment L1 of the second suppressing portion 11212 is connected to the second line segment L2 of the adjacent third suppressing portion 11213.

Referring to fig. 2, in one embodiment, one of the first line segments L1 of the second suppressing portion 11212 is on the same line with the second line segment L2 of the adjacent first suppressing portion 11211, and the other of the first line segments L1 of the second suppressing portion 11212 is on the same line with the second line segment L2 of the adjacent third suppressing portion 11213.

In another embodiment, one of the first line segments L1 of the second suppressing portion 11212 and the second line segment L2 of the adjacent first suppressing portion 11211 are disposed at an acute angle b, where b is, for example, 5 °, 15 °, 30 °, 45 °, 60 °. The other first line L1 of the second suppressing portion 11212 and the second line L2 of the third suppressing portion 11213 adjacent thereto are disposed at an acute angle, for example, 5 °, 15 °, 30 °, 45 °, 60 °, or the like.

Referring to fig. 2, in one embodiment, one of the first line segments L1 on the first inhibiting structure 1122 and one of the first line segments L1 on the third inhibiting portion 11213 are connected in series into the radiating ring 112. In addition, the other first line L1 on the first suppressing portion 1122 and the other first line L1 on the third suppressing portion 11213 are both provided with free ends.

Referring to fig. 2, the first suppressing structure 1122 can be connected in the radiation ring 112 in a variety of manners, for example, four manners, one of which is: the first line segment L1 of the first suppression portion 11211 near the center of the radiation ring 112 and the first line segment L1 of the third suppression portion 11213 near the center of the radiation ring 112 are connected in series to the radiation ring 112, and free ends are respectively disposed on the first line segment L1 of the first suppression portion 11211 far from the center of the radiation ring 112 and the first line segment L1 of the third suppression portion 11213 far from the center of the radiation ring 112. The other is: the first line segment L1 of the first suppression portion 11211 far from the center of the radiation ring 112 and the first line segment L1 of the third suppression portion 11213 far from the center of the radiation ring 112 are connected in series to the radiation ring 112, and free ends are respectively disposed on the first line segment L1 of the first suppression portion 11211 near to the center of the radiation ring 112 and the first line segment L1 of the third suppression portion 11213 near to the center of the radiation ring 112. Yet another is: the first line segment L1 of the first suppression portion 11211 near the center of the radiation ring 112 and the first line segment L1 of the third suppression portion 11213 far from the center of the radiation ring 112 are connected in series to the radiation ring 112, and free ends are respectively disposed on the first line segment L1 of the first suppression portion 11211 near the center of the radiation ring 112 and the first line segment L1 of the third suppression portion 11213 near the center of the radiation ring 112. Still another is: the first line segment L1 of the first suppression portion 11211, which is far from the center of the radiation ring 112, and the first line segment L1 of the third suppression portion 11213, which is near to the center of the radiation ring 112, are connected in series to the radiation ring 112, and the first line segment L1 of the first suppression portion 11211, which is near to the center of the radiation ring 112, and the first line segment L1 of the third suppression portion 11213, which is far from the center of the radiation ring 112, are respectively provided with a free end.

Referring to fig. 2, in one embodiment, a first line segment L1 of a first suppressing portion 11211 of one suppressing structure 1121 is connected to a first line segment L1 of a third suppressing portion 11213 of another suppressing structure 1121, and is disposed at an angle a. Here, a is set to 60 ° to 150 °, for example, specifically 60 °, 90 °, 110 °, 130 °, 150 °, or the like.

Referring to fig. 4, in another embodiment, one of the first line segments L1 of the second suppressing portion 11212 at least partially overlaps with the first line segment L1 of the adjacent first suppressing portion 11211, and the other first line segment L1 of the second suppressing portion 11212 at least partially overlaps with the first line segment L1 of the adjacent third suppressing portion 11213. In this way, one of the first segments L1 of the second suppressing portion 11212 and the first segment L1 of the adjacent first suppressing portion 11211 share one another, and the other first segment L1 of the second suppressing portion 11212 and the first segment L1 of the adjacent third suppressing portion 11213 share one another, so that the structural arrangement is compact, the caliber size is small, and the scattering suppression of the preset frequency band width of the high-frequency signal can be satisfied.

In one embodiment, the decoupled radiating element 10 further comprises a balun. The balun is electrically connected to the feeding portion 111.

In one embodiment, the radiation ring 112 has a polygonal shape, including but not limited to a quadrilateral, pentagon, hexagon, heptagon, octagon, etc., and can be flexibly adjusted and set according to practical requirements. In addition, the radiation ring 112 has a symmetrical structure in the polarization axis direction.

Referring to fig. 5 to 7, fig. 5 to 7 show schematic structural diagrams of a multi-frequency common-aperture antenna according to three different embodiments of the present application, in one embodiment, a multi-frequency common-aperture antenna includes: a low frequency array 20, a high frequency array, and a reflection plate 50. The low frequency array 20 and the high frequency array may be electrically connected to the reflection plate 50 or may be connected to the reflection plate 50 in an insulating manner. In addition, the low frequency array 20 includes a plurality of low frequency radiating elements, the low frequency radiating elements employ the decoupling radiating element 10 of any of the above embodiments, the projection of the low frequency array 20 onto the reflecting plate 50 is set to be a first projection, the projection of the high frequency array onto the reflecting plate 50 is set to be a second projection, and the first projection and the second projection at least partially overlap.

On the one hand, the radiation loop 112 of the decoupling radiation unit 10 adopts at least two suppression structures 1121 which are continuously arranged, and each suppression structure 1121 is at least one, so that ultra-wideband suppression of high-frequency signals is realized; on the other hand, the same decoupling radiation unit 10 can be adopted for different multi-frequency common-caliber antennas, so that the universality and the antenna producibility are improved, and the antenna cost is reduced; in addition, the multi-frequency common-caliber antenna which is more complex is easy to realize, the size is smaller, and the performance is better.

In one embodiment, the low frequency array 20 is configured to receive and/or transmit electromagnetic wave signals in the 690MHz to 960MHz band; the high-frequency array comprises a first high-frequency array 30 and a second high-frequency array 40, wherein the first high-frequency array 30 is used for receiving and/or transmitting electromagnetic wave signals in the frequency range of 1400 MHz-2700 MHz, and the second high-frequency array 40 is used for receiving and/or transmitting electromagnetic wave signals in the frequency range of 3300MHz-4200 MHz.

Referring to fig. 5, in one embodiment, the high frequency array includes a first high frequency array 30, the first high frequency array 30 includes a plurality of first high frequency radiating elements 31, four radiating arms 11 of each low frequency radiating element respectively correspond to the positions of the four first high frequency radiating elements 31, and the projection of the radiating arms 11 of the low frequency radiating elements on the reflecting plate 50 at least partially overlaps the projection of the corresponding first high frequency radiating elements 31 on the reflecting plate 50. Therefore, compact layout can be realized, and the overall caliber size of the product is smaller.

It should be noted that, the first high-frequency radiating element 31 may be in an overlapping relationship with the projection of one or more low-frequency radiating elements on the reflecting plate 50, and the specific number of low-frequency radiating elements overlapping with the projection of one first high-frequency radiating element 31 on the reflecting plate 50 is not limited herein, and may be flexibly adjusted and set according to actual requirements.

Further, a first high-frequency radiating element 31 may be positioned corresponding to one or both radiating arms 11 of a low-frequency radiating element, and there may be at least partial overlap of projections on the reflecting plate 50. And in particular, how to arrange the components can be flexibly adjusted and set according to actual requirements, and the components are not limited herein.

In one embodiment, the low frequency array 20 is set to 2 rows and 4 columns, and the first high frequency array 30 is set to 4 rows and 8 columns, respectively. A row of first high-frequency radiating elements 31 is provided on opposite sides of each row of low-frequency radiating elements.

Referring to fig. 6 and 7, in one embodiment, the high frequency array includes a first high frequency array 30 and a second high frequency array 40. The first high-frequency array 30 includes a plurality of first high-frequency radiating elements 31, and the second high-frequency array 40 includes a plurality of second high-frequency radiating elements 41. The projection of the low-frequency radiation element onto the reflector plate 50 coincides with the projection of the at least one first high-frequency radiation element 31 onto the reflector plate 50 and the projection of the at least one second high-frequency radiation element 41 onto the reflector plate 50, respectively.

Referring to fig. 6, in one embodiment, the low frequency array 20 is set to 2 rows and 4 columns, the first high frequency array 30 is set to 2 rows and 8 columns, and the second high frequency array 40 is set to 4 rows and 11 columns, for example. The low frequency array 20 is located between two rows of first high frequency radiating elements 31 of the first high frequency array 30, and the second high frequency array 40 is located between two rows of low frequency radiating elements of the low frequency array 20. Each row of low-frequency radiating elements of the low-frequency array 20 on the one hand overlaps at least partially with the projections of its adjacent row of first high-frequency radiating elements 31 on the reflector plate 50 and on the other hand overlaps at least partially with the projections of its adjacent row of second high-frequency radiating elements 41 on the reflector plate 50.

Referring to fig. 7, in one embodiment, the low frequency array 20 is set to 1 row and 4 columns, the first high frequency array 30 is set to 2 rows and 8 columns, and the second high frequency array 40 is set to 4 rows and 16 columns, for example. Wherein a row of first high frequency radiating elements 31 is provided on each of opposite sides of a row of low frequency radiating elements. Each low-frequency radiating element corresponds to four first high-frequency radiating elements 31 in position, and specifically, projections of each low-frequency radiating element on the reflecting plate 50 and projections of the corresponding four first high-frequency radiating elements 31 on the reflecting plate 50 are disposed so as to at least partially overlap each other. Furthermore, each low-frequency radiating element corresponds in position to four second high-frequency radiating elements 41, in other words, the projections of each low-frequency radiating element on the reflecting plate 50 and the projections of the corresponding four second high-frequency radiating elements 41 on the reflecting plate 50 are disposed at least partially overlapping each other. Specifically, one second high-frequency radiating element 41 is provided in each of the four radiating loops 112 of each low-frequency radiating element, in other words, the projection of the radiating loop 112 on the reflecting plate 50 completely covers the projection of the second high-frequency radiating element 41 on the reflecting plate 50.

Further, one row of second high-frequency radiating elements 41 is provided on each of opposite sides of each row of first high-frequency radiating elements 31. Each of the first high-frequency radiating elements 31 corresponds in position to the four second high-frequency radiating elements 41, specifically, projections of each of the first high-frequency radiating elements 31 on the reflecting plate 50 and projections of the corresponding four second high-frequency radiating elements 41 on the reflecting plate 50 are disposed so as to at least partially overlap each other.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A decoupling radiating element, the decoupling radiating element comprising:

2. The decoupled radiating element of claim 1, wherein the at least two inhibiting structures comprise at least two first inhibiting structures and at least two second inhibiting structures, the first inhibiting structures being disposed alternately with the second inhibiting structures; alternatively, the at least two inhibiting structures include two first inhibiting structures and one second inhibiting structure, the first inhibiting structures and the second inhibiting structures being alternately arranged; alternatively, the at least two inhibiting structures include a first inhibiting structure and two second inhibiting structures, the first inhibiting structure and the second inhibiting structure being alternately arranged.

3. The decoupled radiating element of claim 1, wherein each of the inhibiting structures comprises a first inhibiting portion and a second inhibiting portion connected in series in sequence, each of the first inhibiting portion and the second inhibiting portion being U-shaped; alternatively, each of the suppressing structures includes a first suppressing portion, a second suppressing portion, and a third suppressing portion that are sequentially connected in series, each of the first suppressing portion, the second suppressing portion, and the third suppressing portion being in a U shape.

4. A decoupled radiating element according to claim 3, wherein for each of said inhibiting structures the opening orientation of said second inhibiting portion is arranged at an angle or opposite to the opening orientation of said first inhibiting portion, the opening orientation of said third inhibiting portion is arranged opposite, opposite or the same as the opening orientation of said third inhibiting portion, respectively.

5. A decoupling radiating cell as claimed in claim 3, wherein the first, second and third suppressing portions each comprise two first line segments disposed in opposed spaced relation and a second line segment connecting the two first line segments, the second line segment disposed at an angle to the first line segment; wherein the first line length of the second inhibition portion of one inhibition structure is larger than the first line length of the second inhibition portion of the other inhibition structure.

6. The decoupled radiating element of claim 5, wherein the opening of the second inhibitor is oriented away from a central portion of the radiating collar, and wherein the second inhibitor is concave toward an area defined by the radiating collar.

7. The decoupled radiating element of claim 5, wherein one of said first segments of said second inhibitor is coincident with said second segment of said first inhibitor adjacent thereto and the other of said first segments of said second inhibitor is coincident with said second segment of said third inhibitor adjacent thereto.

8. The decoupled radiating element of claim 5, wherein one of said first segments of said second inhibitor is connected to said second segment of said first inhibitor adjacent thereto and the other of said first segments of said second inhibitor is connected to said second segment of said third inhibitor adjacent thereto.

9. The decoupled radiating element of claim 5, wherein one of the first segments on the first inhibitor and one of the first segments on the third inhibitor are serially connected into the radiating loop, the other first segment on the first inhibitor and the other first segment on the third inhibitor each having a free end.

10. Decoupling radiation cell according to one of claims 1 to 9, characterized in that the decoupling radiation cell further comprises a balun, which is electrically connected to the feed.

11. A multi-frequency co-aperture antenna, the multi-frequency co-aperture antenna comprising: the low-frequency array and the high-frequency array are arranged on the reflecting plate, the low-frequency array comprises a plurality of low-frequency radiating units, the decoupling radiating units as claimed in any one of claims 1 to 10 are adopted for the low-frequency radiating units, the projection of the low-frequency array on the reflecting plate is set to be a first projection, the projection of the high-frequency array on the reflecting plate is set to be a second projection, and the first projection and the second projection are at least partially overlapped.

12. The multi-frequency co-aperture antenna of claim 11, wherein the low frequency array is configured to receive and/or transmit electromagnetic wave signals in a frequency range of 690MHz to 960 MHz; the high-frequency array comprises a first high-frequency array and a second high-frequency array, wherein the first high-frequency array is used for receiving and/or transmitting electromagnetic wave signals in the frequency range of 1400 MHz-2700 MHz, and the second high-frequency array is used for receiving and/or transmitting electromagnetic wave signals in the frequency range of 3300MHz-4200 MHz.

13. The multiple frequency common aperture antenna of claim 11, wherein the high frequency array comprises a first high frequency array comprising a plurality of first high frequency radiating elements, four of the radiating arms of each of the low frequency radiating elements respectively corresponding to four of the first high frequency radiating element positions, the projection of the radiating arms of the low frequency radiating elements onto the reflector plate at least partially overlapping the projection of the corresponding first high frequency radiating elements onto the reflector plate.

14. The multiple frequency common aperture antenna of claim 11, wherein the high frequency array comprises a first high frequency array and a second high frequency array, the first high frequency array comprising a plurality of first high frequency radiating elements, the second high frequency array comprising a plurality of second high frequency radiating elements, the projections of the low frequency radiating elements on the reflector plate coinciding with the projections of at least one of the first high frequency radiating elements on the reflector plate, respectively, the projections of at least one of the second high frequency radiating elements on the reflector plate.

15. The multiple frequency common aperture antenna of claim 14, wherein each of the low frequency radiating elements corresponds to four first high frequency radiating element locations, each of the low frequency radiating elements further corresponds to four second high frequency radiating element locations; each of the first high-frequency radiating elements corresponds to four of the second high-frequency radiating elements.