Decoupling radiation unit, antenna device, antenna array and communication equipment

Abstract

The invention relates to a decoupling radiation unit, an antenna device, an antenna array and communication equipment, a radiation line segment is concavely arranged in a direction deviating from the center of an oscillator arm to form a concave part, that is, the radiation line segment is arranged to be a curve, and an opening faces the center of the oscillator arm, so that the current path of the oscillator arm can be optimized, the antenna aperture is relatively larger under the same size, and the antenna efficiency is improved. The gain is higher; besides, the arrangement mode of the coupling structures on the oscillator arms can realize mutual reduction of interference current coupled by the coupling structures and interference current coupled by the radiation line segments, thereby achieving the purpose of reducing the interference current, and reducing the radiation of the antenna to the interference current. Therefore, the decoupling radiation unit in the embodiment is larger in aperture, high in gain and excellent in decoupling effect, so that the influence of the low-frequency radiation unit on the arrangement of the high-frequency radiation unit in the multi-frequency antenna array is reduced, and the multi-system common antenna with miniaturization, low cost, high gain and low grating lobe has obvious advantages.

Description

Technical Field

[0001] The present invention relates to the field of mobile communication technology, and in particular to a decoupling radiation unit, an antenna device, an antenna array and a communication device. Background Art

[0002] With the rapid development of technology in the field of mobile communications, communication base stations have higher and higher requirements for antenna indicators; and the current situation of multi-standard operation of mobile communications and difficulty in site selection of base stations has made multi-frequency electrically steered antennas the first choice for base stations. Due to the smaller space occupied and lighter weight, multi-frequency electrically steered antennas with narrower cross-sections can better reflect their advantages. Multi-frequency electrically steered antennas use nested combinations of high and low frequency radiation units or parallel arrangements of high and low frequency radiation units to achieve their performance. However, due to the large difference in size and wavelength between high and low frequency radiation units, the mutual influence and uncertainty of their mutual influence bring great difficulties in the realization of indicators. This difficulty is manifested in: beam convergence, circuit consistency, high-frequency horizontal plane beam width discreteness, beam deformation, high cross-polarization level, high vertical plane grating lobe, circuit indicators are difficult to achieve, etc.; in the conventional parallel arrangement of high and low frequency radiation units, due to the large mutual coupling between high and low frequency radiation units, the spacing between the high frequency array and the low frequency array must be set relatively large to achieve its better indicators, so the size of the antenna is often relatively large.

[0003] Based on this, it is proposed in the related art to integrate a decoupling structure on the radiation unit. Although the decoupling structure can increase the wave transmission effect or the wave transmission bandwidth, the setting of the decoupling structure occupies an integral space of the radiation surface, which reduces the size of the dipole arm of the radiation unit, thereby reducing the gain of the radiation unit at the same volume size. Summary of the invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a decoupling radiation unit, an antenna device, an antenna array and a communication device, which have a good decoupling effect and can improve the gain at the same time.

[0005] A decoupling radiation unit, the decoupling radiation unit comprising a dipole arm, the dipole arm being provided with a decoupling structure, the decoupling structure comprising:

[0006] a radiating line segment, wherein the radiating line segment is configured as a curve and has a concave portion formed in a direction away from the center of the vibrator arm; and

[0007] A coupling structure, wherein the coupling structure is connected to the radiating line segment, the coupling structure is arranged at the mouth of the recess, the coupling structure and the radiating line segment form a resonant ring, the resonant ring is provided with an opening at a position corresponding to the mouth, and the interference current coupled by the coupling structure and the interference current coupled by the radiating line segment cancel each other out.

[0008] In one embodiment, the decoupling structure is provided in plurality, and the radiation line segments of the plurality of decoupling structures are connected in series.

[0009] In one of the embodiments, the dipole arm comprises a plurality of radiation arms connected end to end in sequence, and each of the radiation arms is provided with the decoupling structure.

[0010] In one of the embodiments, the dipole arm is further provided with a connecting line segment located between two adjacent decoupling structures, and the two adjacent radiation line segments are connected via the connecting line segment.

[0011] In one embodiment, the radiating 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, the first branch is arranged at an angle to the second branch; the third branch is arranged at an angle to the second branch; the coupling structure and the second branch are arranged in the same direction or at an angle, and the interference current coupled by the coupling structure and the interference current coupled by the second branch cancel each other out.

[0012] In one embodiment, the angle formed by the first branch and the second branch is 60° to 120°; the angle formed by the third branch and the second branch is 60° to 120°; and the angle formed by the second branch and the coupling structure is 0° to 60°.

[0013] In one of the embodiments, two coupling structures are arranged corresponding to one of the radiating line segments, and both of the coupling structures are located at the mouth of the recess. The ends of the two coupling structures facing away from each other are directly electrically connected or coupled electrically connected to the radiating line segment, and the other ends of the two coupling structures are set as free ends, and the two free ends are spaced apart to form the opening.

[0014] In one of the embodiments, the decoupling structure further includes a coupling branch, which is disposed in the recess, one end of the coupling branch is connected to the middle of the radiation line segment, and the other end of the coupling branch is set as a free end.

[0015] In one embodiment, the two coupling structures are arranged on the same straight line; or, the two coupling structures are arranged parallel to each other and have a spacing perpendicular to their extension direction.

[0016] In one embodiment, the coupling structure is a metal structure or a circuit board; and / or the dipole arm is a radiation arm or a radiation patch structure.

[0017] In one of the embodiments, the decoupling radiation unit further includes a feeding balun; and the dipole arm is electrically connected to the feeding balun.

[0018] An antenna device comprises a first radiation unit, a second radiation unit and a reflection plate, wherein the first radiation unit and the second radiation unit are mounted on the reflection plate; the first radiation unit is the decoupling radiation unit, and the interference current comprises the radiation current induced by the first radiation unit to the second radiation unit.

[0019] In one of the embodiments, the antenna device further includes a third radiation unit, the third radiation unit is mounted on the reflection plate, and the interference current further includes a radiation current induced by the first radiation unit to the third radiation unit.

[0020] An antenna array comprises the decoupling radiation unit and / or the antenna device.

[0021] A communication device, comprising the decoupling radiation unit, and / or the antenna device, and / or the antenna array according to claim 14.

[0022] In the above-mentioned decoupling radiation unit, antenna device, antenna array and communication equipment, on the one hand, the radiation line segment is concavely arranged in a direction away from the center of the dipole arm to form a concave portion, that is, the radiation line segment is arranged in a curve, and the opening is toward the center of the dipole arm, so that the current path of the dipole arm can be optimized, and the antenna aperture is relatively larger under the same size, which can make the gain higher; on the other hand, combined with the coupling structure, the arrangement of the coupling structure on the dipole arm can realize that the interference current coupled by the coupling structure and the interference current coupled by the radiation line segment can be mutually reduced, so as to achieve 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 radiation unit in this embodiment has a larger aperture, high gain and excellent decoupling effect, so that the arrangement of the high-frequency radiation unit in the multi-frequency antenna array is less affected by the low-frequency radiation unit, and has obvious advantages in realizing a multi-system shared antenna with miniaturization, low cost, high gain and low grating lobe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of a decoupling radiation unit according to an embodiment of the present application.

[0024] Figure 2 for Figure 1 Structural diagram of one of the vibrator arms in the structure shown.

[0025] Figure 3 It is a structural diagram of the decoupling structure of the first embodiment of the present application.

[0026] Figure 4 It is a structural diagram of the decoupling structure of the second embodiment of the present application.

[0027] Figure 5 It is a structural diagram of the decoupling structure of the third embodiment of the present application.

[0028] Figure 6 It is a structural diagram of the decoupling structure of the fourth embodiment of the present application.

[0029] Figure 7 It is a structural diagram of the decoupling structure of the fifth embodiment of the present application.

[0030] Figure 8 This is a structural diagram of two adjacent decoupling structures connected together in the first embodiment of the present application.

[0031] Fig. 9 This is a structural diagram of two adjacent decoupling structures connected together in the second embodiment of the present application.

[0032] Fig.10 This is a structural diagram of two adjacent decoupling structures connected together in the third embodiment of the present application.

[0033] Fig.11 This is a structural diagram of two adjacent decoupling structures connected together in the fourth embodiment of the present application.

[0034] Fig.12 This is a structural diagram of a decoupling radiation unit according to another embodiment of the present application.

[0035] Fig.13 FIG. 4 is a structural diagram of an antenna device according to an embodiment of the present application.

[0036] Fig.14 for Fig.13 Another perspective structural diagram of the structure shown.

[0037] Fig.15 The figure is a simulation comparison of the gains of two decoupling radiation units with different opening orientations.

[0038] 10. Diode arm; 101. Radiating single arm; 11. Decoupling structure; 111. Radiating line segment; 1110. Recess; 1111. First branch; 1112. Second branch; 1113. Third branch; 112. Coupling structure; 1121. Opening; 113. Coupling branch; 12. Connecting line segment; 20. Feed balun; 30. First radiating unit; 40. Second radiating unit; 50. Reflector; 60. Third radiating unit. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0040] See also Figure 1 , Figure 2 or Fig.12 An embodiment of the present application provides a decoupling radiation unit, which can be either a single-polarization radiation unit or a dual-polarization radiation unit. The decoupling radiation unit includes a dipole arm 10. When the decoupling radiation unit is a dual-polarization radiation unit, the number of dipole arms 10 is four.

[0041] The dipole arm 10 is provided with a decoupling structure 11, and the number of the decoupling structures 11 is not limited to one, for example, it is set to multiple. The decoupling structure 11 includes a radiating line segment 111. For the same dipole arm 10, the radiating line segments 111 of the multiple decoupling structures 11 are connected in series. The radiating line segment 111 is set as a curve, and a concave portion 1110 is formed in a direction away from the center of the dipole arm 10.

[0042] Optionally, the shape of the radial line segment 111 includes but is not limited to a fold line, an arc line, or a combination of a fold line and an arc line, and can be a curve of a regular shape or a curve of an irregular shape. Figure 2 or Figure 6 For example, the radiation line segment 111 is set as follows Figure 3 As another example, the radial line segment 111 is set as follows Figure 4 For example, the radial line segment 111 is set as follows Figure 5 The non-closed polygon shown; for another example, the radiation line segment 111 is set to be U-shaped, V-shaped or other regular shapes and irregular shapes.

[0043] In a specific embodiment, in order to facilitate the processing of the vibrator arm 10, the radiation line segment 111 is set as a broken line as an example for description. Optionally, the radiation line segment 111 includes a plurality of branches connected in sequence, and two adjacent branches are set at an angle.

[0044] See also Figure 3 and Figure 6In one embodiment, the radial line segment 111 includes a first branch 1111, a second branch 1112 and a third branch 1113. The first branch 1111 is connected to the third branch 1113 through the second branch 1112, and the first branch 1111 and the second branch 1112 are arranged at an angle. The angle formed by the first branch 1111 and the second branch 1112 includes but is not limited to 60° to 120°, for example, 60°, 75°, 90°, 105° or 120°, etc. The third branch 1113 is arranged at an angle with the second branch 1112. The angle formed by the second branch 1112 and the third branch 1113 is but is not limited to 60° to 120°, for example, 60°, 75°, 90°, 105° or 120°, etc.

[0045] Optionally, when the angle between the first branch 1111 and the second branch 1112 is 90°, and the angle between the second branch 1112 and the third branch 1113 is 90°, the radiating line segment 111 is correspondingly set to a non-closed rectangle, such as Figure 2 and Figure 6 When the angle between the first branch 1111 and the second branch 1112 is 120°, and the angle between the second branch 1112 and the third branch 1113 is 120°, the radial line segment 111 is correspondingly set to a non-closed trapezoid, such as Figure 3 shown.

[0046] See also Figure 3 The decoupling structure 11 further includes a coupling structure 112. The coupling structure 112 is connected to the radiation line segment 111, and the coupling structure 112 is arranged at the mouth of the recess 1110. The coupling structure 112 and the radiation line segment 111 form a resonant ring, and the portion of the resonant ring corresponding to the mouth is provided with an opening 1121, and the interference current coupled by the coupling structure 112 and the interference current coupled by the radiation line segment 111 cancel each other out.

[0047] Specifically, the coupling structure 112 and the second branch 1112 are arranged in the same direction or at an angle. In this way, the interference current coupled by the coupling structure 112 and the interference current coupled by the second branch 1112 cancel each other out, achieving the purpose of better reducing the interference current and effectively reducing the radiation of the antenna to the interference current.

[0048] It should be noted that the interference current is well known to those skilled in the art, that is, the current that affects the radiation of the radiation unit itself (or the electromagnetic wave that affects its own radiation). The interference current is the current that affects the radiation of the radiation unit itself, and may be directly conducted to the radiation unit, or may be coupled to the radiation unit, or induced to the radiation unit, and the current that interferes with the radiation of the radiation unit itself. In addition, as is well known to those skilled in the art, electromagnetics can be converted into each other, so the interference current of the present application may also be an interfering electromagnetic wave. For example, the interference current may be the radiation current of other radiation units, or the induced current generated by the radiation energy of other radiation units sensed by the radiation unit, or the electromagnetic waves radiated by other radiation units.

[0049] It should also be noted that the specific setting position and specific shape and size of the radiating line segment 111 and the coupling structure 112 are related to the frequency band of the corresponding interference cancellation. Radiating line segments 111 and coupling structures 112 with different positions and / or shapes and sizes can reduce electromagnetic interference in different frequency bands.

[0050] See also Figure 3 In order to make the induced current reduction principle of the embodiment of the present application clearer, the role played by the coupling structure 112 and the radiation line segment 111 when they cooperate is specifically introduced below: When the electromagnetic signal of other radiation units (such as high-frequency radiation units) below the dipole arm 10 passes through the dipole arm 10, the coupling current (such as Figure 3 ) and the coupling current excited on the coupling structure 112 (as shown in F1 in FIG. Figure 3 As shown in F2 in FIG. 1 , they are all in opposite directions and appear in pairs to cancel each other, which can reduce or even completely eliminate the induced current on the dipole arm 10 with the same frequency as the electromagnetic signals of other radiating units. Therefore, when the electromagnetic signals of other radiating units pass through the dipole arm 10, the dipole arm 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 improve the electromagnetic signal gain stability, beam width, cross-polarization ratio and other directional pattern parameters of other radiating units, thereby achieving a partial or complete wave transmission effect.

[0051] It should also be noted that Figure 3 The direction of the interference current shown in the figure is only an example and is not limited in the embodiments of the present application.

[0052] In the above-mentioned decoupling radiation unit, on the one hand, the radiation line segment 111 is concavely arranged in a direction away from the center of the dipole arm 10 to form a concave portion 1110, that is, the radiation line segment 111 is arranged in a curve, and the opening 1121 is arranged toward the center of the dipole arm 10, so that the current path of the dipole arm 10 can be optimized. Under the same size, the antenna aperture is relatively larger, which can make the gain higher; on the other hand, combined with the coupling structure 112, the arrangement of the coupling structure 112 on the dipole arm 10 can achieve the mutual elimination of the interference current coupled by the coupling structure 112 and the interference current coupled by the radiation line segment 111, so as to achieve the purpose of eliminating the interference current, thereby reducing the radiation of the antenna to the interference current. It can be seen that the decoupling radiation unit in this embodiment has a larger aperture, high gain and excellent decoupling effect, so that the arrangement of the high-frequency radiation unit in the multi-frequency antenna array is less affected by the low-frequency radiation unit, and has obvious advantages in realizing a multi-system shared antenna with miniaturization, low cost, high gain and low grating lobe.

[0053] See also Fig.15 , Fig.15 The simulation comparison diagram of the gain of two decoupling radiation units with different opening 1121 orientations is shown. Specifically, the gain of the decoupling radiation unit in the present application is simulated, that is, for example, Figure 1 The gain of the decoupling radiation unit shown in the figure is simulated, and the opening 1121 of the decoupling radiation unit faces inward, that is, the opening 1121 is located on the side of the radiation line segment 111 facing the center of the dipole arm 10; in addition, the gain of the decoupling radiation unit with the opening facing outward is also simulated, and the opening faces outward, that is, the opening is arranged on the side of the radiation line segment away from the center of the dipole arm. Fig.15 It can be seen that the gain when the opening 1121 faces inward is significantly higher than the gain when the opening faces outward, that is, the gain can be improved by changing the direction of the opening 1121.

[0054] See also Figure 2 Optionally, each dipole arm 10 includes a plurality of radiation arms 101 connected end to end in sequence, and the contour formed by the plurality of radiation arms 101 includes but is not limited to regular shapes such as square, triangle or circle or other irregular shapes.

[0055] See also Figure 2 Each radiation arm 101 is provided with a decoupling structure 11, and the number of decoupling structures 11 on each radiation arm 101 is more than one, for example, multiple. Fig.10 and Fig.11 The shapes and sizes of the decoupling structures 11 can be consistent or different.

[0056] When there are multiple decoupling structures 11 on the dipole arm 10, the radiation segments 111 of the multiple decoupling structures 11 are connected in series. The number of radiation segments 111 on each radiation arm 101 is the same or different, which is not limited here. The shape and size of each radiation segment 111 can be consistent or different, which is not limited here. In addition, each radiation arm 101 is also provided with a coupling structure 112 corresponding to the radiation segment 111.

[0057] Among them, one radiating line segment 111 can correspond to one coupling structure 112 or two coupling structures 112. The specific number can be flexibly adjusted and set according to actual needs, as long as an opening 1121 is provided at the position corresponding to the mouth of the resonant ring.

[0058] See also Figures 3 to 11 In any picture, when two coupling structures 112 are provided corresponding to one radiation line segment 111, the ends of the two coupling structures 112 facing away from each other are directly electrically connected or coupled electrically connected to the radiation line segment 111, and are specifically connected to the opposite ends of the radiation line segment 111, for example. In addition, the ends of the two coupling structures 112 facing each other are, for example, free ends, and are spaced apart to form an opening 1121. In this way, since the two coupling structures 112 are both located at the mouth of the recess 1110, the opening 1121 is located on the side of the radiation line segment 111 close to the center of the dipole arm 10.

[0059] When a coupling structure 112 is provided corresponding to a radiation line segment 111, one end of the coupling structure 112 is directly electrically connected or coupled to the radiation line segment 111, and the other end of the coupling structure 112 is provided as a free end, and is spaced apart from the radiation line segment 111 to form an opening 1121. In this way, since the coupling structures 112 are all located at the mouth of the recess 1110, the opening 1121 is correspondingly located on one side of the radiation line segment 111 close to the center of the dipole arm 10. Specifically, one end of the coupling structure 112 is directly electrically connected or coupled to one end of the radiation line segment 111, and the other end of the coupling structure 112 is spaced apart from the radiation line segment 111 to form an opening 1121.

[0060] On the basis of any of the above embodiments, when one end of the coupling structure 112 is directly electrically connected to the radiating line segment 111, the coupling structure 112 includes but is not limited to being obtained by integrally forming with the radiating line segment 111, or integrally forming by welding to realize direct electrical connection between the coupling structure 112 and the radiating line segment 111. More specifically, one end of the coupling structure 112 and the radiating line segment 111 are an integrated structure. In addition, when one end of the coupling structure 112 is coupled and electrically connected to the radiating line segment 111, for example, there is no direct electrical contact between one end of the coupling structure 112 and the radiating line segment 111, but includes but is not limited to providing an insulating material between the two, and the two are separated from each other by the insulating material (not shown in the figure), and the coupling structure 112 can also be arranged relative to the radiating line segment 111 in other ways to realize coupling and electrical connection with the radiating line segment 111, for example, a gap is provided between one end of the coupling structure 112 and the radiating line segment 111.

[0061] In one embodiment, the number of the radiating line segments 111 on each dipole arm 10 depends on the number of the decoupling structures 11, and is not limited to one, and can be, for example, set to multiple. The number of radiating line segments 111 on each dipole arm 10 is flexibly adjusted and set according to actual needs, and specifically, for example, is two, three, four, five, six or more. Each radiating line segment 111 of each dipole arm 10 can be set to different shapes, line widths and lengths according to different positions and different frequency bands, so as to achieve the purpose of decoupling multiple frequency bands at the same time, with strong practicality, low cost and small caliber.

[0062] When the number of the radiating line segments 111 of the dipole arm 10 is multiple, the multiple radiating line segments 111 are arranged in series. In addition, there are multiple coupling structures 112, and the multiple radiating line segments 111 and the multiple coupling structures 112 are respectively arranged at multiple different positions on the dipole arm 10. In this way, the interference current at multiple different positions on the dipole arm 10 can be reduced, so as to achieve a better decoupling effect; in addition, when the number of radiating line segments 111 is more, since the opening 1121 of the resonant ring corresponding to each radiating line segment 111 is located on the side of the corresponding radiating line segment 111 close to the center of the dipole arm 10, it has obvious advantages in realizing a multi-system shared antenna with miniaturization, low cost, high gain and low grating lobe.

[0063] The specific number, structure, shape, and size of the radiation line segments 111 of each dipole arm 10 can be the same or different, and can be flexibly adjusted and set according to actual needs. Similarly, the specific structure, shape, and size of the coupling structures 112 at different positions can be the same or different, and can be flexibly adjusted and set according to actual needs.

[0064] For example, the multiple radiation line segments 111 of each dipole arm 10 are arranged at equal intervals or unequal intervals, and are flexibly adjusted and arranged according to actual needs.

[0065] It should be noted that the coupling structure 112 is not limited to a straight line, but can also be a curve, specifically, for example, 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 coupling structure 112 is set as a curve, compared with a straight line, the length of the coupling structure 112 can be increased, which plays a role in extending the coupling interference current path.

[0066] For example, the coupling structure 112 includes but is not limited to one or more combinations of a straight line segment, an arc segment, a broken line segment, an S-shaped curve segment, a Z-shaped curve segment, and a square wave curve segment.

[0067] For example, the line width of the coupling structure 112 includes, but is not limited to, 0.5 mm, 1.2 mm or even larger, and the length of the coupling structure 112 can be flexibly adjusted and set according to actual needs. When there are multiple coupling structures 112, the lengths of the coupling structures 112 can be the same or different, and can be flexibly adjusted and set according to actual needs.

[0068] By way of example, the coupling structure 112 includes but is not limited to a conductive structure such as a metal structure or a circuit board.

[0069] For example, the coupling structure 112 and the radiating line segment 111 are arranged in the same plane, which is also set as the radiating surface of the radiating arm. In this way, the dipole arm 10 is easy to manufacture, and can be a sheet metal part manufactured by sheet metal technology, or a circuit board part manufactured by circuit board technology.

[0070] Of course, as an optional solution, the coupling structure 112 can also be on a different plane from the radiating line segment 111, as long as the coupling structure 112 and the radiating line segment 111 form a resonant ring with an opening 1121. For example, the planes where the coupling structure 112 and the radiating line segment 111 are located can be offset to a certain extent, that is, a spacing is set between the two surfaces, and the specific offset can be flexibly adjusted and set according to actual needs, and is not limited here.

[0071] See also Figure 2 , Figures 8 to 11 In one embodiment, the dipole arm 10 is further provided with a connecting line segment 12 located between two adjacent decoupling structures 11. Two adjacent radiating line segments 111 are connected by the connecting line segment 12. In this way, the radiating line segment 111 and the connecting line segment 12 are connected in series to form a closed loop, so that the antenna performance index of the decoupling radiating unit is reliable.

[0072] It should be noted that the connecting line segment 12 includes but is not limited to one or more combinations of a straight line segment, an arc segment, a broken line segment, an S-shaped curve segment, a Z-shaped curve segment, and a square wave curve segment. The specific shape and length are not limited here. It can be flexibly adjusted and set according to the layout position of two adjacent decoupling structures 11, as long as the decoupling structures 11 can be connected in series to form a closed ring loop.

[0073] Of course, two adjacent decoupling structures 11 may also be directly connected, that is, there is no need to configure a connecting line segment 12 between the two adjacent decoupling structures 11 , for example, see FIG. 9 .

[0074] For two adjacent decoupling structures 11, the arrangement direction of the decoupling structures 11, that is, the concave direction of the concave portion 1110, can be as follows: Figure 8 The mutually perpendicular arrangement shown in Fig. 9 The obtuse angle arrangement shown in FIG. 1 may also be as follows Fig.10 and Fig.11 The two components are arranged in parallel as shown in , or arranged in other ways.

[0075] Please refer to Figure 8 , the coupling structures 112 of the two decoupling structures 11 are arranged perpendicular to each other; please refer to Fig. 9 , the coupling structures 112 of the two decoupling structures 11 are arranged at an obtuse angle, and the connecting line segment 12 can be omitted; please refer to Fig.10 and Fig.11 , the coupling structures 112 of the two decoupling structures 11 are on the same straight line.

[0076] See also Figure 6 , for example, the decoupling structure 11 also includes a coupling branch 113. The coupling branch 113 is arranged in the recess 1110, one end of the coupling branch 113 is connected to the middle of the radiation line segment 111, and the other end of the coupling branch 113 is set as a free end. In this way, not only the coupling structure 112 can play a coupling role, but also the coupling branch 113 can play a coupling role. The length of the coupling branch 113 can be set according to actual needs. By changing the length, the wave transmission effect and the wave transmission bandwidth can be adjusted accordingly, thereby improving the performance indicators of the antenna, which has obvious advantages in realizing a multi-system shared antenna with miniaturization, low cost, high gain and low grating lobe.

[0077] Specifically, the other end of the coupling branch 113 points to the opening 1121 , corresponding to the position of the opening 1121 .

[0078] There are many ways to set the two coupling structures 112 of the same decoupling structure 11, which can be flexibly adjusted and set according to actual needs. For example, see Figure 6, the two coupling structures 112 may be arranged on the same straight line. Figure 7 The two coupling structures 112 are not limited to being arranged on the same straight line. For example, the two coupling structures 112 are arranged in parallel with each other and are provided with a spacing perpendicular to the extension direction thereof. In this way, the two coupling structures 112 can avoid each other to avoid mutual interference, and at the same time, their respective lengths can be increased, thereby increasing the wave transmission effect and the wave transmission bandwidth.

[0079] In one embodiment, the dipole arm 10 includes but is not limited to a radiation arm or a radiation patch structure.

[0080] See also Fig.14 In one embodiment, the decoupling radiation unit further includes a feeding balun 20. The dipole arm 10 is electrically connected to the feeding balun 20.

[0081] See also Figure 1 , Fig.13 and Fig.14 Another embodiment of the present application provides an antenna device, the antenna device includes a first radiation unit 30, a second radiation unit 40 and a reflector 50, the first radiation unit 30 and the second radiation unit 40 are mounted on the reflector 50. The first radiation unit 30 is a decoupling radiation unit, and the interference current includes the radiation current induced by the first radiation unit 30 to the second radiation unit 40.

[0082] Specifically, the operating frequency band of the first radiation unit 30 is lower than that of the second radiation unit 40 . For example, the first radiation unit 30 is a low-frequency radiation unit, and the second radiation unit 40 is a high-frequency radiation unit.

[0083] In the above antenna device, on the one hand, the radiation line segment 111 is concavely arranged in a direction away from the center of the dipole arm 10 to form a concave portion 1110, that is, the radiation line segment 111 is arranged in a curve, and the opening 1121 is arranged toward the center of the dipole arm 10, so that the current path of the dipole arm 10 can be optimized. Under the same size, the antenna aperture is relatively larger, which can make the gain higher; on the other hand, combined with the coupling structure 112, the arrangement of the coupling structure 112 on the dipole arm 10 can achieve the mutual elimination of the interference current coupled by the coupling structure 112 and the interference current coupled by the radiation line segment 111, so as to achieve the purpose of eliminating the interference current, thereby reducing the radiation of the antenna to the interference current. It can be seen that the decoupling radiation unit in this embodiment has a larger aperture, high gain and excellent decoupling effect, so that the arrangement of the high-frequency radiation unit in the multi-frequency antenna array is less affected by the low-frequency radiation unit, and has obvious advantages in realizing a multi-system shared antenna with miniaturization, low cost, high gain and low grating lobe.

[0084] In one embodiment, the antenna device further includes a third radiation unit 60. The third radiation unit 60 is mounted on the reflector 50, and the interference current further includes the radiation current sensed by the first radiation unit 30 to the third radiation unit 60. The operating frequency band of the third radiation unit 60 is higher than that of the first radiation unit 30 and lower than that of the second radiation unit 40. When the electromagnetic signals of the third radiation unit 60 and the second radiation unit 40 pass through the first radiation unit 30, interference currents will be generated on the first radiation unit 30. Since the first radiation unit 30 is a decoupling radiation unit in the above embodiment, the interference current coupled by the coupling structure 112 and the interference current coupled by the radiation structure can be mutually offset, thereby achieving the purpose of reducing the interference current, thereby reducing the radiation of the interference current by the antenna.

[0085] It should be noted that the antenna device provided in the embodiment of the present application is only an example, wherein the structures of the first radiation unit 30 and the second radiation unit 40 may be the same or different. For example, the first radiation unit 30 and the second radiation unit 40 may both be die-cast antennas; or, the first radiation unit 30 is a die-cast antenna, and the second radiation unit 40 is a dielectric antenna; or, the first radiation unit 30 is a dual-frequency antenna, and the second radiation unit 40 is a single-frequency antenna, etc., which are not limited in the embodiment of the present application.

[0086] Yet another embodiment of the present application provides an antenna array, which includes the decoupling radiation unit of any of the above embodiments, and / or the antenna device of any of the above embodiments.

[0087] In the above antenna array, on the one hand, the radiation line segment 111 is concavely arranged in a direction away from the center of the dipole arm 10 to form a concave portion 1110, that is, the radiation line segment 111 is arranged in a curve, and the opening 1121 is arranged toward the center of the dipole arm 10, so that the current path of the dipole arm 10 can be optimized. Under the same size, the antenna aperture is relatively larger, which can make the gain higher; on the other hand, combined with the coupling structure 112, the arrangement of the coupling structure 112 on the dipole arm 10 can achieve the mutual elimination of the interference current coupled by the coupling structure 112 and the interference current coupled by the radiation line segment 111, so as to achieve the purpose of eliminating the interference current, thereby reducing the radiation of the antenna to the interference current. It can be seen that the decoupling radiation unit in this embodiment has a larger aperture, high gain and excellent decoupling effect, so that the arrangement of the high-frequency radiation unit in the multi-frequency antenna array is less affected by the low-frequency radiation unit, and has obvious advantages in realizing a multi-system shared antenna with miniaturization, low cost, high gain and low grating lobe.

[0088] Still another embodiment of the present application provides a communication device, the communication device comprising 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.

[0089] In the above-mentioned communication device, on the one hand, the radiation line segment 111 is concavely arranged in a direction away from the center of the dipole arm 10 to form a concave portion 1110, that is, the radiation line segment 111 is arranged in a curve, and the opening 1121 is arranged toward the center of the dipole arm 10, so that the current path of the dipole arm 10 can be optimized, and the antenna aperture is relatively larger under the same size, which can make the gain higher; on the other hand, combined with the coupling structure 112, the arrangement of the coupling structure 112 on the dipole arm 10 can achieve the mutual elimination of the interference current coupled by the coupling structure 112 and the interference current coupled by the radiation line segment 111, so as to achieve the purpose of eliminating the interference current, thereby reducing the radiation of the antenna to the interference current. It can be seen that the decoupling radiation unit in this embodiment has a larger aperture, high gain and excellent decoupling effect, so that the arrangement of the high-frequency radiation unit in the multi-frequency antenna array is less affected by the low-frequency radiation unit, and has obvious advantages in realizing a multi-system shared antenna with miniaturization, low cost, high gain and low grating lobe.

[0090] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0091] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0092] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; 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 the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0093] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0094] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0095] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0096] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A decoupling radiation unit, characterized in that: The decoupling radiation unit comprises a dipole arm, the dipole arm is provided with a decoupling structure, and the decoupling structure comprises: a radiating line segment, wherein the radiating line segment is configured as a curve and has a concave portion formed in a direction away from the center of the vibrator arm; and A coupling structure, wherein the coupling structure is connected to the radiating line segment, the coupling structure is arranged at the mouth of the recess, the coupling structure and the radiating line segment form a resonant ring, the resonant ring is provided with an opening at a position corresponding to the mouth, and the interference current coupled by the coupling structure and the interference current coupled by the radiating line segment cancel each other out.

2. The decoupling radiation unit according to claim 1, characterized in that: The decoupling structure is provided in plurality, and the radiation line segments of the plurality of decoupling structures are connected in series.

3. The decoupling radiation unit according to claim 2, characterized in that: The dipole arm comprises a plurality of radiation arms connected end to end in sequence, and each radiation arm is provided with the decoupling structure.

4. The decoupling radiation unit according to claim 2, characterized in that: The dipole arm is further provided with a connecting line segment between two adjacent decoupling structures, and the two adjacent radiation line segments are connected via the connecting line segment.

5. The decoupling radiation unit according to claim 1, characterized in that: The radiating 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, the first branch is set at an angle to the second branch; the third branch is set at an angle to the second branch; the coupling structure and the second branch are arranged in the same direction or at an angle, and the interference current coupled by the coupling structure and the interference current coupled by the second branch cancel each other out.

6. The decoupling radiation unit according to claim 5, characterized in that: The angle formed by the first branch and the second branch is 60° to 120°; the angle formed by the third branch and the second branch is 60° to 120°; the angle formed by the second branch and the coupling structure is 0° to 60°.

7. The decoupling radiation unit according to claim 1, characterized in that: Two coupling structures are arranged corresponding to one radiating line segment, and both coupling structures are located at the mouth of the recess. One end of the two coupling structures facing away from each other is directly electrically connected or coupled electrically connected to the radiating line segment, and the other end of the two coupling structures is set as a free end, and the two free ends are arranged at intervals to form the opening.

8. The decoupling radiation unit according to claim 7, characterized in that: The decoupling structure further includes a coupling branch, which is arranged in the recess, one end of the coupling branch is connected to the middle of the radiation line segment, and the other end of the coupling branch is set as a free end.

9. The decoupling radiation unit according to claim 7, characterized in that: The two coupling structures are arranged on the same straight line; or, the two coupling structures are arranged parallel to each other and have a spacing perpendicular to their extension direction.

10. The decoupling radiation unit according to claim 1, characterized in that: The coupling structure is a metal structure or a circuit board; and / or the dipole arm is a radiation arm or a radiation patch structure.

11. The decoupling radiation unit according to claim 1, characterized in that: The decoupling radiation unit further includes a feeding balun; the dipole arm is electrically connected to the feeding balun.

12. An antenna device, characterized in that: The antenna device includes a first radiation unit, a second radiation unit and a reflection plate, and the first radiation unit and the second radiation unit are installed on the reflection plate; the first radiation unit is a decoupling radiation unit as described in any one of claims 1 to 11, and the interference current includes the radiation current induced by the first radiation unit to the second radiation unit.

13. The antenna device according to claim 12, characterized in that: The antenna device further includes a third radiation unit, which is mounted on the reflection plate. The interference current further includes a radiation current induced by the first radiation unit to the third radiation unit.

14. An antenna array, characterized in that: The antenna array comprises the decoupling radiation unit according to any one of claims 1 to 11, and / or the antenna device according to claim 11 or 12.

15. A communication device, characterized in that: The communication device comprises the decoupling radiation unit according to any one of claims 1 to 11, and / or the antenna device according to claim 12 or 13, and / or the antenna array according to claim 14.

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