WO2023216587A1

WO2023216587A1 - Decoupling radiation unit, antenna apparatus, antenna array and antenna device

Info

Publication number: WO2023216587A1
Application number: PCT/CN2022/138993
Authority: WO
Inventors: 贾飞飞; 李明超; 陆国标; 苏国生; 郑之伦; 王强; 刘培涛
Original assignee: 京信通信技术(广州)有限公司; 京信射频技术(广州)有限公司
Priority date: 2022-05-07
Filing date: 2022-12-14
Publication date: 2023-11-16
Also published as: CN114865311A

Abstract

The present disclosure relates to a decoupling radiation unit, an antenna apparatus, an antenna array and an antenna device. A matching line segment (11) comprises a plurality of sequentially connected branches, and the matching line segment (11) is concave towards the center of the decoupling radiation unit, that is, the matching line segment (11) is set to be a curve and has a longer actual electrical length, and can thus realize a radiation function of a relatively wide frequency band in a quite small aperture size, wherein the size of the decoupling radiation unit in the present embodiment is about 80% of that of a conventional vibrator. Moreover, in combination with a first coupling structure (20), by arranging the first coupling structure (20) on a radiation structure (10), mutual counteraction between an interference current, which is coupled to the first coupling structure (20), and an interference current, which is coupled to the radiation structure (10), can be realized, such that the purpose of counteracting the interference currents is achieved, thereby reducing the radiation of the interference currents by an antenna. Therefore, the decoupling radiation unit in the present embodiment has a small aperture and an excellent decoupling effect, such that the impact of low-frequency radiation units on the arrangement of high-frequency radiation units in a multi-frequency antenna array is reduced, the effects of good high-frequency horizontal-plane beam width convergence, a low vertical-plane grating lobe, etc. can be achieved, and a miniaturized multi-frequency antenna array, which has a lower cost, a more compact structure and a more excellent index, can be realized.

Description

Decoupled radiating elements, antenna devices, antenna arrays and antenna equipment

Cross-references to related applications

This disclosure claims priority from a Chinese patent application with application number 2022104898032 filed with the China Patent Office on May 7, 2022, the entire contents of which are incorporated into this disclosure by reference.

Technical field

The present disclosure relates to the field of mobile communication technology, and in particular to a decoupling radiation unit, an antenna device, an antenna array and an antenna device.

Background technique

With the rapid development of technology in the field of mobile communications, communication base stations have increasingly higher requirements for antenna indicators. However, the current multi-standard operation of mobile communications and the difficulty in selecting base stations have made multi-frequency electrically adjustable antennas the first choice for base stations. It takes up less space and is lighter, so a narrower cross-section multi-frequency electrically adjustable antenna can better reflect its advantages. Multi-frequency electronically adjustable antennas use a nested combination of high- and low-frequency radiating units or a parallel arrangement of high- and low-frequency radiating units to achieve its performance. However, due to the large difference in size of high- and low-frequency radiating units and the large difference in wavelength, the nested combination brings great difficulties in the realization of indicators due to their mutual influence and uncertainty. This difficulty is reflected in: Beam convergence, circuit consistency, high-frequency horizontal plane beam width dispersion, beam deformation, high cross-polarization level, high vertical plane grating lobes, difficulty in achieving circuit indicators, etc.; conventional high- and low-frequency radiating units are arranged side by side, due to The mutual coupling between high-frequency and low-frequency radiating units is relatively large, and the distance between the high-frequency array and the low-frequency array must be set relatively large to achieve better performance, so the size of the antenna is often relatively large.

Contents of the invention

Based on this, it is necessary to provide a decoupling radiation unit, antenna device, antenna array and antenna equipment, which can reduce the size while having a good decoupling effect, so that the antenna performance indicators meet the requirements.

The technical solution is as follows: a decoupling radiation unit. The decoupling radiation unit includes: a radiation structure. The radiation structure is provided with at least one matching line segment. The matching line segment includes a plurality of branches connected in sequence. The matching line segment recessed toward the center of the decoupling radiation unit; and a first coupling structure, at least one of the first coupling structures is provided on the radiation structure, the first coupling structure and the matching line segment form a first In the open first resonant ring, the interference current coupled by the first coupling structure and the interference current coupled by the matching line segment cancel each other.

In one embodiment, the first coupling structure is directly electrically connected to the radiating structure, or the first coupling structure is coupled and electrically connected to the radiating structure.

In one embodiment, the first coupling structure includes one or more combinations of straight line segments, arc segments, polyline segments, S-shaped curve segments, Z-shaped curve segments, and square wave curve segments.

In one embodiment, the second end of the first coupling structure includes one or more combinations of a straight line segment, an arc segment, a polygonal line segment or a coil.

In one embodiment, the matching line segment includes a first branch, a second branch and a third branch, the first branch is connected to the third branch through the second branch, and the third branch is One branch is arranged at an angle with the second branch; the third branch is arranged at an angle with the second branch; the first coupling structure and the second branch are arranged in the same direction or at an angle. Arranged at an angle, the interference current coupled by the first coupling structure and the interference current coupled by the second branch cancel each other.

In one embodiment, the second branch includes one or more combinations of straight line segments, arc segments, polyline segments, S-shaped curve segments, Z-shaped curve segments, and square wave curve segments.

In one embodiment, the included angle between the first branch and the second branch is 60° to 120°; the included angle between the third branch and the second branch is 60°. to 120°; the included angle formed by the second branch and the first coupling structure is 0° to 60°.

In one embodiment, there are multiple matching line segments and multiple first coupling structures, and one or two first coupling structures are provided corresponding to one matching line segment.

In one embodiment, the radiating structure is further provided with a connecting line segment between two adjacent matching line segments, and the two adjacent matching line segments are connected through the connecting line segment; the decoupling The radiation unit also includes a second coupling structure, which is disposed on the radiation structure; two adjacent matching line segments, the connecting line segments, and the second coupling structure are enclosed to form a second coupling structure. In the open second resonant ring, the interference current coupled by the second coupling structure and the interference current coupled by the connecting line segment cancel each other.

In one embodiment, the first coupling structure is a metal structure or a circuit board.

In one embodiment, the radiation structure is a radiation arm or a radiation patch structure.

In one embodiment, the decoupling radiation unit further includes a feed balun; the radiation structure is electrically connected to the feed balun.

An antenna device, the antenna device includes a first radiating unit, a second radiating unit and a reflecting plate, the first radiating unit and the second radiating unit are installed on the reflecting plate; the first radiating unit For the decoupling radiation unit, the interference current includes the radiation current induced by the first radiation unit to the second radiation unit.

In one embodiment, the antenna device further includes a third radiating unit installed on the reflecting plate, and the interference current further includes the first radiating unit sensing the third radiating unit. The radiation current of the radiating unit.

An antenna array includes the decoupling radiation unit and/or the antenna device.

A communication device, which includes the decoupling radiation unit, and/or the antenna device, and/or the antenna array.

The above-mentioned decoupling radiating unit, antenna device, antenna array and antenna equipment, on the one hand, the matching line segment includes a plurality of branches connected in sequence, and the matching line segment is concave toward the center of the decoupling radiating unit, that is, the matching line segment is set in a curve, and the actual electrical length Longer, the radiation function of a wider frequency band can be achieved in a small aperture size. The size of the decoupling radiation unit in this embodiment is about 80% of the conventional oscillator; on the other hand, combined with the first coupling structure, the The arrangement of a coupling structure on the radiating structure can realize that the interference current coupled by the first coupling structure and the interference current coupled by the radiating structure can reduce each other, thereby achieving the purpose of reducing the interference current, thereby reducing the radiation of the interference current by the antenna. It can be seen that the decoupling radiating unit in this embodiment has a small diameter and excellent decoupling effect, which reduces the influence of the low-frequency radiating unit on the arrangement of high-frequency radiating units in the multi-frequency antenna array, and can achieve high-frequency horizontal plane wavewidth convergence. With good performance and low vertical plane grating lobes, a miniaturized multi-frequency antenna array with lower cost, more compact structure and better indicators can be realized.

Description of the drawings

The drawings that form a part of this application are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure.

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

Figure 1 is a schematic structural diagram of a decoupling radiation unit according to an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of a matching line segment and a first coupling structure according to an embodiment of the present disclosure;

Figure 3 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 4 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 5 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 6 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 7 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 8 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 9 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 10 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 11 is a schematic structural diagram of a matching line segment and a first coupling structure according to another embodiment of the present disclosure;

Figure 12 is a schematic structural diagram of a decoupling radiation unit according to another embodiment of the present disclosure;

Figure 13 is a schematic structural diagram of a decoupling radiation unit according to another embodiment of the present disclosure;

Figure 14 is a schematic structural diagram of a decoupling radiation unit according to another embodiment of the present disclosure;

Figure 15 is a schematic structural diagram of a decoupling radiation unit according to another embodiment of the present disclosure;

Figure 16 is a schematic structural diagram of a decoupling radiation unit according to another embodiment of the present disclosure;

Figure 17 is a schematic structural diagram of the antenna device from one perspective according to an embodiment of the present disclosure;

FIG. 18 is a schematic structural diagram of an antenna device from another perspective according to an embodiment of the present disclosure.

10. Radiating structure; 10a. First radiating structure; 10b. Second radiating structure; 10c. Sub-radiating arm; 11. Matching line segment; 111. First opening; 112. First branch; 113. Second branch; 114 , third branch; 12. connecting line segment; 13. second opening; 20. first coupling structure; 21. first end; 22. second end; 30. second coupling structure; 40. feeding balun; 50. Second radiating unit; 60. Reflecting plate; 70. Third radiating unit.

Detailed ways

In order to make the above objects, features and advantages of the present disclosure more obvious and understandable, specific implementation modes of the present disclosure will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be implemented in many other ways than those described here, and those skilled in the art can make similar improvements without violating the connotation of the present disclosure. Therefore, the present disclosure is not limited by the specific embodiments disclosed below.

Referring to FIGS. 1 and 2 , FIG. 1 shows a schematic structural diagram of a decoupling radiation unit according to an embodiment of the present disclosure, and FIG. 2 shows a schematic structural diagram of the matching line segment 11 and the first coupling structure 20 according to an embodiment of the present disclosure. An embodiment of the present disclosure provides a decoupling radiation unit. The decoupling radiation unit includes a radiation structure 10 and a first coupling structure 20 . The radiation structure 10 is provided with at least one matching line segment 11. The matching line segment 11 includes a plurality of branches connected in sequence. The matching line segment 11 is recessed toward the center of the decoupling radiation unit. There is at least one first coupling structure 20 . The first coupling structure 20 is disposed on the radiation structure 10 . The first coupling structure 20 and the matching line segment 11 form a first resonant ring with a first opening 111 . The interference current coupled by the first coupling structure 20 and the interference current coupled by the matching line segment 11 cancel each other.

It should be noted that interference current is well known to those skilled in the art, that is, it is a current that affects the radiation unit's own radiation (or an electromagnetic wave that affects its own radiation). Interference current is a current that affects the radiation of the radiation unit itself. It can be directly conducted to the radiation unit, or it can be coupled to the radiation unit, or induced into the radiation unit, causing interference to the radiation of the radiation unit itself. In addition, as is well known to those skilled in the art, electromagnetism can be converted into each other, so the interference current in this application can also be interference electromagnetic waves. For example, the interference current may be the radiation current of other radiating units, or the induced current generated by the radiating energy of other radiating units induced by the radiating unit, or the electromagnetic waves radiated by other radiating units.

It should also be noted that the specific placement positions of the matching line segments 11 and the first coupling structure 20 are related to the frequency bands for corresponding interference cancellation. The matching line segments 11 and the first coupling structure 20 in different positions and/or shapes and sizes can reduce the electromagnetic interference in different frequency bands. interference.

Please refer to Figure 2. In order to make the induced current reduction principle of the embodiment of the present application clearer, the following is a detailed introduction to the role played by the first coupling structure 20 when it cooperates with the matching line segment 11: When other radiating units below the radiating structure 10 When the electromagnetic signal (such as a high-frequency radiation unit) passes through the radiation structure 10, the coupling current excited on the matching line segment 11 (shown as F1 in Figure 2) and the coupling current excited on the first coupling structure 20 (such as (shown as F2 in Figure 2 ) are all opposite and appear in pairs and can cancel each other out, which can reduce or even completely eliminate the induced current on the radiation structure 10 with the same frequency as the electromagnetic signals of other radiation units. Therefore, when the electromagnetic signals of other radiating units pass through the radiating structure 10, the radiating structure 10 can only radiate less or no electromagnetic waves with the same frequency as the electromagnetic signals of other radiating units, which is beneficial to improving the performance of other radiating units. Electromagnetic signal gain stability, beam width, cross-polarization ratio and other pattern parameters to achieve partial or complete wave transmission.

It should also be noted that the direction of the interference current illustrated in FIG. 2 is only an example, and the embodiment of the present application does not limit this.

In the above-mentioned decoupling radiation unit, on the one hand, the matching line segment 11 includes a plurality of branches connected in sequence, and the matching line segment 11 is concave toward the center of the decoupling radiation unit. That is, the matching line segment 11 is set in a curve, and the actual electrical length is longer. The radiation function of a wider frequency band can be realized within the diameter of The arrangement on the radiation structure 10 can realize that the interference current coupled by the first coupling structure 20 and the interference current coupled by the radiation structure 10 can reduce each other, thereby achieving the purpose of reducing the interference current, thereby reducing the radiation of the interference current by the antenna. It can be seen that the decoupling radiating unit in this embodiment has a small diameter and excellent decoupling effect, which reduces the influence of the low-frequency radiating unit on the arrangement of high-frequency radiating units in the multi-frequency antenna array, and can achieve high-frequency horizontal plane wavewidth convergence. With good performance and low vertical plane grating lobes, a miniaturized multi-frequency antenna array with lower cost, more compact structure and better indicators can be realized.

Specifically, along the direction perpendicular to the surface of the radiation structure 10 (the direction of arrow S in the figure), the first end 21 of the first coupling structure 20 coincides with one end of the matching line segment 11, and the second end of the first coupling structure 20 22 is spaced from the other end of the matching line segment 11. The interference current coupled by the first coupling structure 20 and the interference current coupled by the matching line segment 11 cancel each other.

It should be noted that due to the projection on the radiation structure 10 along the direction perpendicular to the radiation structure 10, the first end 21 of the first coupling structure 20 coincides with one end of the matching line segment 11, and the second end 22 of the first coupling structure 20 coincides with The other end of the mating line segment 11 is provided with a gap, so that a first resonant ring with a first opening 111 can be formed, so that the interference current coupled by the first coupling structure 20 and the interference current coupled by the mating line segment 11 can be eliminated from each other.

Please refer to Figure 1 again. In one embodiment, there is more than one matching line segment 11 on the first coupling structure 20. Different shapes, line widths and lengths of the matching line segments 11 can be set according to different positions and different frequency bands, so that it can be achieved at the same time. The purpose of decoupling multiple frequency bands is high practicability, low cost, and small diameter.

Referring to FIG. 2 , in one embodiment, the first coupling structure 20 is directly electrically connected to the radiation structure 10 . Specifically, the first coupling structure 20 includes, but is not limited to, being integrally formed with the radiating structure 10, or being integrally formed by welding to achieve direct electrical connection between the first coupling structure 20 and the radiating structure 10. More specifically, the first end 21 of the first coupling structure 20 and one end of the mating line segment 11 are integrated structures.

Referring to FIGS. 6 and 7 , in one embodiment, the first coupling structure 20 is not limited to being directly electrically connected to the radiating structure 10 , but is coupled and electrically connected to the radiating structure 10 . That is, there is no direct contact between the first coupling structure 20 and the radiation structure 10, but includes but is not limited to an insulating material between the two, and the electrical coupling connection between the two is realized through the insulating material (not shown in the figure). . Of course, the specific coupling method is not limited to the coupling electrical connection achieved by the arrangement of the first coupling structure 20 shown in Figures 6 and 7. The first coupling structure 20 can also be arranged relative to the mating line segment 11 in other ways. And realize coupling electrical connection with the mating line segment 11.

Referring to any one of FIG. 2 to FIG. 10 , it should be noted that there is a gap between the second end 22 of the first coupling structure 20 and the other end of the mating line segment 11 , that is, the second end 22 of the first coupling structure 20 is a free end. .

In one embodiment, the first coupling structure 20 and the radiating structure 10 are in the same plane. Of course, as an optional solution, the first coupling structure 20 and the radiation structure 10 can also be on different planes, as long as the first coupling structure 20 and the matching line segment 11 form a first resonant ring with a first opening 111, which is allowed. There is a certain degree of offset from the plane where the radiation structure 10 is located. The specific offset can be flexibly adjusted and set according to actual needs and is not limited here.

Referring to FIGS. 2 to 8 and 12 , in one embodiment, the first coupling structure 20 includes but is not limited to a straight line segment, an arc segment, a polyline segment, an S-shaped curve segment, a Z-shaped curve segment, or a square wave curve segment. (as shown in Figure 12). Specifically, the first coupling structure 20 can be a regular curve or an irregular curve, which is not limited here, and can be flexibly adjusted and set according to actual needs. When the first coupling structure 20 is configured in a curved shape, the length of the first coupling structure 20 can be increased compared to the straight line segment, thereby extending the coupling interference current path.

It should be noted that as long as the first end 21 of the first coupling structure 20 and one end of the mating line segment 11 overlap each other, the second end 22 of the first coupling structure 20 extends in a direction close to the other end of the mating line segment 11 and forms a gap, that is, However, it is not limited to the fact that the first coupling structure 20 must be arranged along the direction in which one end of the mating line segment 11 points to the other end. Instead, the first coupling structure 20 is allowed to be arranged in the direction in which one end of the mating line segment 11 points to the other end. The first coupling structure 20 is in an angular relationship with the direction in which one end of the mating line segment 11 points to the other end.

Referring to FIGS. 9 to 11 , in one embodiment, the second end 22 of the first coupling structure 20 includes but is not limited to one or more combinations of a straight line segment, an arc segment, a polygonal line segment or a coil. Specifically, the second end 22 of the first coupling structure 20 can be a regular curve or an irregular curve, which is not limited here and can be flexibly adjusted and set according to actual needs. When the second end 22 of the first coupling structure 20 is set in a curved shape, the length of the first coupling structure 20 can be increased compared to the straight line segment, thereby extending the coupling interference current path.

Please refer to FIG. 2 . In one embodiment, the matching line segment 11 includes but is not limited to a first branch 112 , a second branch 113 and a third branch 114 . The first branch 112 is connected to the third branch 114 through the second branch 113 . The interference current coupled by the first coupling structure 20 and the interference current coupled by the second branch 113 cancel each other. Specifically, the arrangement direction of the second branches 113 is the same as the direction from one end to the other end of the mating line segment 11 or has an included angle of less than 90°. In addition, the arrangement direction of the second branch 113 is the same as the arrangement direction of the first coupling structure 20 or has an included angle of less than 90°. The interference current coupled on the second branch 113 is in the same direction as the interference current coupled on the first coupling structure 20 . On the contrary, or with included angles, the effect of mutual reduction can be achieved.

In one embodiment, the first branch 112 and the second branch 113 are arranged at an included angle of, for example, 60° to 120°, specifically in a perpendicular relationship to each other. In addition, the third branch 114 and the second branch 113 are arranged at an included angle of, for example, 60° to 120°, specifically in a perpendicular relationship to each other. Specifically, the matching line segment 11 is U-shaped or approximately U-shaped.

In addition, the first branch 112 and the lines other than the matching line segment 11 of the sub-radiating arm 10c where it is located are arranged at an included angle of, for example, 60° to 120°. The second branch 113 is arranged at an included angle of, for example, 0 to 30° with the lines other than the matching line segment 11 of the sub-radiating arm 10c where it is located. The third branch 114 is arranged at an included angle of, for example, 60° to 120° with the line other than the matching line segment 11 of the sub-radiating arm 10c where it is located.

Please refer to Figure 1, Figure 13 to Figure 17. In one embodiment, the second branch 113 includes but is not limited to a straight line segment (as shown in Figure 1), an arc segment, a polyline segment, an S-shaped curve segment, a Z-shaped segment, etc. One or more combinations of curve segments and square wave curve segments (as shown in Figure 13). Specifically, the second branch 113 can be a regular curve or an irregular curve, which is not limited here, and can be flexibly adjusted and set according to actual needs. When the second branch 113 is arranged in a curved shape, compared with arranging the second branch 113 in a straight line segment, the length of the matching line segment 11 can be increased, thereby extending the coupling interference current path.

Please refer to Figure 1, Figure 13 to Figure 17. It should be noted that the first opening 111 is not limited to corresponding to one first coupling structure 20 (as shown in Figure 1, Figure 12 and Figure 13), and can also correspond to two first coupling structures 20. correspond to one first coupling structure 20 (as shown in FIG. 13, FIG. 15 and FIG. 16), or one part of the first opening 111 corresponds to one first coupling structure 20, and another part of the first opening 111 corresponds to two first coupling structures 20. Coupling structure 20.

Please refer to FIG. 13 , FIG. 15 and FIG. 16 . In one embodiment, the first opening 111 is provided with two first coupling structures 20 . The first ends 21 of the two first coupling structures 20 are respectively connected with the matching line segments 11 . The two ends coincide with each other, and the second ends 22 of the two first coupling structures 20 are spaced apart from each other. In this way, the interference current coupled by the two first coupling structures 20 can also cancel each other out from the interference current coupled by the matching line segment 11 . It should be noted that the length, line width, and shape of the two first coupling structures 20 can be the same or different, and are not limited here, and can be flexibly adjusted and set according to actual needs.

Please refer to FIG. 1 . In one embodiment, there are multiple matching line segments 11 and multiple first coupling structures 20 . One matching line segment 11 is provided with one first coupling structure 20 or two first coupling structures 20 . In this way, when there are multiple matching line segments 11 and multiple first coupling structures 20 are provided, the matching line segments 11 and the first coupling structures 20 are respectively arranged at multiple different positions on the radiating structure 10, which can realize multiple different positions. The interference current at the position is reduced, thereby achieving a better decoupling effect; in addition, when the number of matching line segments 11 is larger, the volume size of the decoupling radiation unit can be reduced, and miniaturization can be achieved.

In one embodiment, the plurality of matching line segments 11 are arranged at equal intervals or at unequal intervals, and can be flexibly adjusted and set according to actual needs.

Referring to Figures 2 to 11, in one embodiment, the specific structural shapes and sizes of the multiple matching line segments 11 can be the same or different, and can be flexibly adjusted and set according to actual needs. Similarly, the specific structural shapes and sizes of the first coupling structures 20 at different positions may be the same or different, and can be flexibly adjusted and set according to actual needs.

Referring to FIG. 12 , in one embodiment, the radiating structure 10 is also provided with a connecting line segment 12 between two adjacent matching line segments 11 , and the two adjacent matching line segments 11 are connected through the connecting line segment 12 . The decoupling radiation unit also includes a second coupling structure 30 disposed on the radiation structure 10 . Two adjacent matching line segments 11 , connecting line segments 12 , and the second coupling structure 30 enclose a second resonant ring with a second opening 13 . The interference current coupled by the second coupling structure 30 and the interference current coupled by the connecting line segment 12 cancel each other.

Specifically, projection is performed on the radiation structure 10 along the direction perpendicular to the radiation structure 10 , the first end 21 of the second coupling structure 30 coincides with one of the two adjacent matching line segments 11 , and the second coupling structure 30 is The two ends 22 are separated from the other of the two adjacent matching line segments 11; the interference current coupled by the second coupling structure 30 and the interference current coupled by the connecting line segment 12 cancel each other. In this way, similar to the function of the first coupling structure 20 , the arrangement of the second coupling structure 30 on the radiation structure 10 can realize that the interference current coupled by the second coupling structure 30 and the interference current coupled by the connecting line segment 12 can cancel each other, achieving further The purpose of reducing interference current is to further reduce the antenna's radiation of interference current, which can further improve the antenna performance.

Of course, as an optional solution, the second coupling structure 30 may not be provided at the position corresponding to the connecting line segment 12 between the two adjacent matching line segments 11 (as shown in FIG. 1 ).

It should be noted that the connecting line segment 12 includes but is not limited to one or more of a straight line segment, an arc segment, a polyline segment, an S-shaped curve segment, a Z-shaped curve segment, and a square wave curve segment (as shown in Figure 12). combination. Specifically, the first coupling structure 20 can be a regular curve or an irregular curve, which is not limited here, and can be flexibly adjusted and set according to actual needs. When the first coupling structure 20 is configured in a curved shape, the length of the first coupling structure 20 can be increased compared to the straight line segment, thereby extending the coupling interference current path.

It should be noted that the second opening 13 is not limited to being provided with one second coupling structure 30 (as shown in FIG. 12 ), but may also be provided with two second coupling structures 30 (as shown in FIG. 16 ), or may be a part of the opening 13 . One second coupling structure 30 is provided correspondingly to the second opening 13 of the second opening 13 , and two second coupling structures 30 are provided correspondingly to the second opening 13 of another part.

It should be noted that, in one embodiment, the shape, line width, and length of the second coupling structure 30 and the first coupling structure 20 are the same or different, and are not limited here, and can be flexibly adjusted and set according to actual needs. In addition, the form of the second coupling structure 30 may be similar to the arrangement form of the first coupling structure 20 in the above embodiment, which will not be described again here.

It should also be noted that in one embodiment, the shape and size of the second opening 13 and the first opening 111 are the same or different, which are not limited here, and can be flexibly adjusted and set according to actual needs. In addition, the design form of the second opening 13 may be similar to the arrangement form of the first opening 111 in the above embodiment, and will not be described again here.

In one embodiment, the first coupling structure 20 includes, but is not limited to, a conductive structure such as a metal structure or a circuit board.

In one embodiment, the radiation structure 10 includes, but is not limited to, a radiation arm or a radiation patch structure.

Please refer to Figure 1. In one embodiment, the decoupling radiation unit can be either a single-polarized radiation unit or a dual-polarized radiation unit. Specifically, a dual-polarized radiation unit is used as an example for illustration, including two radiation structures. 10. These two radiating structures 10 (both are dipoles): are respectively defined as the first radiating structure 10a and the second radiating structure 10b, and each radiating structure 10 (the first radiating structure 10a and the second radiating structure 10b) Each radiating arm includes two radiating arms, and each radiating arm includes four sub-radiating arms 10c connected end to end. The outline formed by the four sub-radiating arms 10c is generally square. Each sub-radiating arm 10c is provided with a matching line segment 11, as well as a first coupling structure 20 and/or a second coupling structure 30.

Referring to FIG. 17 , in one embodiment, the decoupling radiating unit further includes a feed balun 40 . The radiating structure 10 is electrically connected to the feeding balun 40 .

Please refer to Figure 1, Figure 17 and Figure 18. In one embodiment, an antenna device is provided. The antenna device includes a first radiating unit, a second radiating unit 50 and a reflecting plate 60. The first radiating unit and the second radiating unit 50 installed on the reflective plate 60. The first radiation unit is a decoupling radiation unit, and the interference current includes the radiation current induced by the first radiation unit to the second radiation unit 50.

Specifically, the working frequency band of the first radiating unit is lower than that of the second radiating unit 50. For example, the first radiating unit is a low-frequency radiating unit and the second radiating unit 50 is a high-frequency radiating unit.

In the above-mentioned antenna device, on the one hand, the matching line segment 11 includes a plurality of branches connected in sequence. The matching line segment 11 is concave toward the center of the decoupling radiating unit. That is, the matching line segment 11 is set in a curve. The actual electrical length is longer, and in a small diameter The radiation function of a wider frequency band can be realized within the size. In this embodiment, the size of the decoupling radiation unit is about 80% of that of the conventional oscillator. On the other hand, combined with the first coupling structure 20, the first coupling structure 20 is in the radiation structure. The arrangement on 10 can realize that the interference current coupled by the first coupling structure 20 and the interference current coupled by the radiation structure 10 can reduce each other, thereby achieving the purpose of reducing the interference current, thereby reducing the radiation of the interference current by the antenna. It can be seen that the decoupling radiating unit in this embodiment has a small diameter and excellent decoupling effect, which reduces the influence of the low-frequency radiating unit on the arrangement of high-frequency radiating units in the multi-frequency antenna array, and can achieve high-frequency horizontal plane wavewidth convergence. With good performance and low vertical plane grating lobes, a miniaturized multi-frequency antenna array with lower cost, more compact structure and better indicators can be realized.

In one embodiment, the antenna device further includes a third radiating element 70 . The third radiation unit 70 is installed on the reflection plate 60 , and the interference current also includes the radiation current induced by the first radiation unit to the third radiation unit 70 . The working frequency band of the third radiating unit 70 is higher than that of the first radiating unit and smaller than that of the second radiating unit 50 . When the electromagnetic signals of the third radiating unit 70 and the second radiating unit 50 pass through the first radiating unit, interference current will be generated on the first radiating unit. Since the first radiating unit is the decoupled radiating unit in the above embodiment, it can be realized The interference current coupled by the first coupling structure 20 and the interference current coupled by the radiation structure 10 can reduce each other, thereby achieving the purpose of reducing the interference current, thereby reducing the radiation of the interference current by the antenna.

It should be noted that the antenna device provided in the embodiment of the present application is only an example, in which the structures of the first radiating unit and the second radiating unit 50 may be the same or different. For example, the first radiating unit and the second radiating unit 50 may be Both are die-cast antennas; or the first radiating unit is a die-cast antenna, and the second radiating unit 50 is a dielectric antenna; or the first radiating unit is a dual-frequency antenna, and the second radiating unit 50 is a single-frequency antenna, etc., this application The embodiment does not limit this.

In one embodiment, an antenna array is provided. The antenna array includes the decoupling radiation unit of any of the above embodiments, and/or the antenna device of any of the above embodiments.

In the above-mentioned antenna array, on the one hand, the matching line segment 11 includes a plurality of branches connected in sequence. The matching line segment 11 is concave toward the center of the decoupling radiating unit. That is, the matching line segment 11 is set in a curve. The actual electrical length is longer, and in a small diameter The radiation function of a wider frequency band can be realized within the size. In this embodiment, the size of the decoupling radiation unit is about 80% of that of the conventional oscillator. On the other hand, combined with the first coupling structure 20, the first coupling structure 20 is in the radiation structure. The arrangement of the antenna 10 can realize that the interference current coupled by the first coupling structure 20 and the interference current coupled by the radiation structure 10 can reduce each other, thereby achieving the purpose of reducing the interference current, thereby reducing the radiation of the interference current by the antenna. It can be seen that the decoupling radiating unit in this embodiment has a small diameter and excellent decoupling effect, which reduces the influence of the low-frequency radiating unit on the arrangement of the high-frequency radiating unit in the multi-frequency antenna array, and can achieve high-frequency horizontal plane wavewidth convergence. With good performance and low vertical plane grating lobes, a miniaturized multi-frequency antenna array with lower cost, more compact structure and better indicators can be realized.

In one embodiment, a communication device includes the decoupling radiation unit of any of the above embodiments, and/or the antenna device of any of the above embodiments, and/or the antenna array of any of the above embodiments.

For the above-mentioned communication equipment, on the one hand, the radiation structure 10 is provided with a curved matching line segment 11, the actual electrical length is longer, and the radiation function of a wider frequency band can be achieved within a small aperture size. In this embodiment, the decoupling radiation unit The size is about 80% of the conventional oscillator; on the other hand, combined with the first coupling structure 20, the first coupling structure 20 is arranged on the radiation structure 10 to realize the interference current coupled by the first coupling structure 20 and the radiation structure 10 The coupled interference currents can reduce each other to achieve the purpose of reducing the interference current, thereby reducing the antenna's radiation of interference current. It can be seen that the decoupling radiating unit in this embodiment has a small diameter and excellent decoupling effect, which reduces the influence of the low-frequency radiating unit on the arrangement of high-frequency radiating units in the multi-frequency antenna array, and can achieve high-frequency horizontal plane wavewidth convergence. With good performance and low vertical plane grating lobes, a miniaturized multi-frequency antenna array with lower cost, more compact structure and better indicators can be realized.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-described embodiments only express several implementation modes of the present disclosure, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the disclosed patent. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the patent disclosed should be determined by the appended claims.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientation or positional relationship indicated by "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the device or device to which it is referred. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the disclosure.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

In this disclosure, unless otherwise explicitly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

In this disclosure, unless otherwise expressly stated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features may be in indirect contact through an intermediary. touch. Furthermore, the terms "above", "above" and "above" the first feature is above the second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "below" and "beneath" the first feature to the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature has a smaller horizontal height than the second feature.

It should be noted that when an element is referred to as being "mounted" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may also be intervening elements present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

Claims

A decoupling radiation unit, the decoupling radiation unit includes:

A radiating structure, the radiating structure is provided with at least one matching line segment, the matching line segment includes a plurality of branches connected in sequence, the matching line segment is recessed toward the center of the decoupling radiating unit; and

A first coupling structure, at least one of the first coupling structures, is provided on the radiation structure. The first coupling structure and the matching line segment form a first resonant ring with a first opening. The first coupling structure The interference current coupled by the structure and the interference current coupled by the matching line segment cancel each other.
The decoupling radiation unit according to claim 1, wherein the first coupling structure is directly electrically connected to the radiating structure, or the first coupling structure is coupled and electrically connected to the radiating structure.
The decoupling radiation unit according to claim 1, wherein the first coupling structure includes one or more of a straight line segment, an arc segment, a polyline segment, an S-shaped curve segment, a Z-shaped curve segment, and a square wave curve segment. kind of combination.
The decoupling radiation unit according to claim 1, wherein the second end of the first coupling structure includes one or more combinations of a straight line segment, an arc segment, a polygonal line segment or a coil.
The decoupling radiation unit according to claim 1, wherein the matching line segment includes a first branch, a second branch and a third branch, and the first branch passes through the second branch and the third branch. The branches are connected, the first branch and the second branch are arranged at an angle; the third branch and the second branch are arranged at an angle; the first coupling structure and the second branch The arrangement directions are the same or at an angle, and the interference current coupled by the first coupling structure and the interference current coupled by the second branch cancel each other.
The decoupling radiation unit according to claim 5, wherein the second branch includes one or more of a straight line segment, an arc segment, a polyline segment, an S-shaped curve segment, a Z-shaped curve segment, and a square wave curve segment. combination.
The decoupling radiation unit according to claim 5, wherein the first branch and the second branch form an included angle of 60° to 120°; the third branch and the second branch The formed angle is 60° to 120°; the formed angle between the second branch and the first coupling structure is 0° to 60°.
The decoupling radiation unit according to claim 1, wherein there are a plurality of said matching line segments and a plurality of said first coupling structures, and one said first coupling structure or two said matching line segments are correspondingly provided. Describe the first coupling structure.
The decoupling radiation unit according to claim 8, wherein the radiation structure is further provided with a connecting line segment between two adjacent matching line segments, and the two adjacent matching line segments are connected through the connecting line segment. The line segments are connected; the decoupling radiation unit also includes a second coupling structure, the second coupling structure is provided on the radiation structure; two adjacent matching line segments, the connecting line segment, and the second coupling The structure encloses a second resonant ring with a second opening, and the interference current coupled by the second coupling structure and the interference current coupled by the connecting line segment cancel each other.
The decoupling radiation unit according to claim 1, wherein the first coupling structure is a metal structure or a circuit board.
The decoupling radiation unit according to claim 1, the radiation structure is a radiation arm or a radiation patch structure.
The decoupling radiation unit according to claim 1, wherein the decoupling radiation unit further includes a feed balun; the radiation structure is electrically connected to the feed balun.
An antenna device, wherein the antenna device includes a first radiating unit, a second radiating unit and a reflecting plate, the first radiating unit and the second radiating unit are installed on the reflecting plate; the first The radiation unit is the decoupling radiation unit according to any one of claims 1 to 12, and the interference current includes the radiation current induced by the first radiation unit to the second radiation unit.
The antenna device according to claim 13, wherein the antenna device further includes a third radiating unit, the third radiating unit is installed on the reflection plate, and the interference current further includes induction by the first radiating unit. radiation current to the third radiating unit.
An antenna array, wherein the antenna array includes the decoupling radiation unit as claimed in any one of claims 1 to 12, and/or the antenna device as claimed in claim 13 or 14.
A communication device, wherein the communication device includes the decoupling radiation unit according to any one of claims 1 to 12, and/or the antenna device according to claim 13 or 14, and/or the antenna device according to claim 15 antenna array.