Antenna and decoupling element thereof

Abstract

The present application relates to the technical field of communication base station antennas. The present application provides an antenna and a decoupling element thereof, wherein the decoupling element has a main body and at least one branch, wherein the branch includes a connecting section and an extension section connected to each other, wherein the connecting section is vertically connected to the main body, and the extension section is arranged in parallel with the main body. The main body of the decoupling element can generate an electron mirror in the low-frequency electromagnetic field of the corresponding antenna, thereby improving the isolation between the two radiating units operating in the low-frequency working section. Under the excitation of the high-frequency electromagnetic field of the corresponding antenna, the currents of the branch and the main body are opposite, and the high-frequency scattering of the decoupling element as a whole cancels each other out, greatly reducing the impact on the radiation performance of the radiating units operating in the high-frequency band. After using the decoupling element with frequency-selective characteristics, the antenna can improve the isolation between arrays operating in the low-frequency working section and avoid affecting the radiation performance of the array operating in the high-frequency working section, which is beneficial to improving the antenna radiation performance and reducing the antenna size.

Description

Technical Field

[0001] The present application relates to the technical field of communication base station antennas, and in particular provides an antenna and a decoupling element thereof. Background Art

[0002] With the development of wireless communications, the number of base stations continues to increase, and site resources are becoming scarce. Miniaturization and integration of base station antennas have become key development trends. 5G antenna deployment, in particular, requires integrating existing antennas for multiple frequency bands and multiple standards to create more space for 5G equipment installation. However, multi-band, multi-standard antennas experience various types of internal interference. Typically, coupling interference occurs between two low-frequency, co-band arrays, degrading inter-array isolation and radiation performance. Currently, there are two main solutions to address this degradation in isolation and radiation performance. One is to increase the array spacing. This approach can reduce inter-array coupling and improve performance, but it increases antenna size, negatively impacting antenna cost, construction, and reliability. The other is to add partitions between antenna arrays to reduce inter-array interference. However, in multi-band antennas, adding partitions can significantly impact the performance of the high-frequency arrays. Summary of the Invention

[0003] The purpose of the present application is to provide an antenna and a decoupling element thereof, which can improve the isolation and radiation performance between arrays operating in the low frequency band, and compared with conventional decoupling elements, the decoupling element can significantly reduce the impact on the radiation performance of arrays operating in the high frequency band.

[0004] To achieve the above objectives, the technical solution adopted in this application is:

[0005] A decoupling element comprises a main body and at least one branch located in the same plane as the main body; the branch comprises a connecting segment and an extension segment connected to each other, the connecting segment is vertically connected to the main body, and the extension segment is arranged parallel to the main body and extends toward the direction of either end of the main body.

[0006] In one embodiment, the main body is in the shape of a straight line or a curved line, and the shape of the extended section of the branch is adapted to the main body.

[0007] In one embodiment, the main body is provided with a symmetrical first side wall portion and a second side wall portion, and at least six branches are provided on the first side wall portion or the second side wall portion, and the six branches are arranged side by side along the length direction of the main body.

[0008] In one embodiment, the length of the main body is between 1 / 2 and 3 / 4 of the wavelength of the lowest frequency point in the low-frequency working section of the corresponding antenna; the length of each of the branches is between 1 / 5 and 1 / 3 of the wavelength of the center frequency point in the high-frequency working section of the corresponding antenna.

[0009] In one embodiment, the interval between the branch and the main body is 2 to 5 mm.

[0010] The present application also provides an antenna, comprising a main reflector and any one of the above-mentioned decoupling elements, wherein the decoupling element is arranged on the main reflector.

[0011] In one embodiment, the antenna includes a first array and a second array; the first array includes a plurality of first radiating units arranged on the main reflector, and the second array includes a plurality of second radiating units arranged on the main reflector; the decoupling element is arranged between the first radiating units of the first array and the second radiating units of the second array.

[0012] In one embodiment, the decoupling element is provided between each of the first radiating units of the first array, and the decoupling element is provided between each of the second radiating units of the second array.

[0013] In one embodiment, the first radiation unit and the second radiation unit respectively include a low-frequency band working unit and a high-frequency band working unit arranged around the low-frequency band working unit, and the low-frequency band working unit is set at a higher height than the high-frequency band working unit; there are four high-frequency band working units, and they are respectively arranged under the four corners of the low-frequency band working unit.

[0014] In one embodiment, the decoupling element is arranged at the same height as each of the low-frequency band working units.

[0015] Beneficial effects of the present application: The antenna and its decoupling element provided by the present application, the decoupling element includes a main body and at least one branch located in the same plane as the main body, the branch includes a connecting section and an extension section connected to each other, the connecting section is vertically connected to the main body, the extension section is arranged parallel to the main body, and extends in the direction of any end of the main body, the decoupling element with the above structure has a frequency selection characteristic, that is, its main body can generate an electron mirror in the low-frequency electromagnetic field of the corresponding antenna, thereby improving the isolation and radiation performance between the radiation units operating in the low-frequency working section; and under the excitation of the high-frequency electromagnetic field of the corresponding antenna, the branch current of the decoupling element is opposite to the main body current, and the high-frequency scattering of the decoupling element as a whole cancels each other out, which has little impact on the radiation performance of the radiation unit operating in the high-frequency working section of the antenna. The antenna provided in the present application can effectively improve the isolation and radiation performance between arrays operating in the low-frequency band after using the decoupling element with frequency-selective characteristics. Compared with conventional decoupling elements, the decoupling element can significantly reduce the impact on the radiation performance of arrays operating in the high-frequency working section, and can reduce the spacing between adjacent arrays without reducing the isolation between arrays. This is of great significance for improving the antenna radiation performance and reducing the size of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the planar structure of a decoupling element provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the planar structure of another decoupling element provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the main structure of the antenna provided in an embodiment of the present application;

[0020] Figure 4 Provided in the embodiments of this application Figure 3 A partial enlarged view of the middle figure;

[0021] Figure 5 A schematic diagram of the top view of the antenna provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of the three-dimensional structure of the antenna provided in an embodiment of the present application;

[0023] Figure 7A comparison curve of the isolation before and after using a decoupling element with a frequency-selective function for an array of antennas operating in a low-frequency band provided by an embodiment of the present application;

[0024] Figure 8 Schematic diagram of the local high-frequency induced current of the decoupling element with frequency selection function in the antenna provided in an embodiment of the present application.

[0025] Among them, the reference numerals in the figures are:

[0026] 100, 100-1, 100-2, 100-3, 100-4, 100-5, 100-6, 100-7 - decoupling elements; 110 - main body; 111 - first side wall; 112 - second side wall; 120 - branch; 121 - connecting section; 122 - extension section; 200 - antenna; 210 - first array; 211-1, 211-2, 211-3, 211-4, 211-5, 211-6 - first radiating elements; 220 - second array; 221-1, 221-2, 221-3, 221-4, 221-5, 221-6 - second radiation units; 2111-1, 2111-2, 2111-3, 2211, 2211-1, 2211-2, 2211-3 low-frequency band working units; 2112-1, 2112-2, 2112-3, 2212, 2212-1, 2212-2, 2212-3 high-frequency band working units; 230 - main reflector; 240 - insulating member. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0028] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] Herein, when multiple identical components are included, these components may be individually referenced by their full numbers (e.g., first radiating element 211-1) and may be collectively referenced by the first part of their numbers (e.g., first radiating element 211).

[0032] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0033] See also Figure 1 and Figure 2 The decoupling element 100 provided in an embodiment of the present application is now described. The decoupling element 100 includes a main body 110 and at least one branch 120 located in the same plane as the main body 110. The branch 120 includes a connecting segment 121 and an extension segment 122. The connecting segment 121 is perpendicularly connected to the main body 110, and the extension segment 122 is arranged parallel to the main body 110 and extends toward either end of the main body 110.

[0034] It can be understood that the branch 120 and the main body 110 are on the same plane, and the branch 120 can overlap with the main body 110 by translation along the direction from the branch 120 to the main body 110, and the branch 120 and the main body 110 are both made of conductive materials. The decoupling element with the above structure can generate an electron mirror in the low-frequency electromagnetic field of the corresponding antenna, thereby improving the isolation and radiation performance between the radiating units operating in the low-frequency working section. Under the excitation of the high-frequency electromagnetic field of the corresponding antenna, the current on the branch 120 of the decoupling element 100 is opposite to the current on the main body 110, and the high-frequency scattering of the decoupling element 100 as a whole cancels each other out, which has little impact on the radiation performance of the radiating units operating in the high-frequency working section of the antenna. It can reduce the spacing between the radiating units without affecting the isolation, which is of great significance for improving the radiation performance of the antenna and reducing the size of the antenna.

[0035] In another embodiment of this application, please refer to Figure 1 and Figure 2 The main body 110 is in a straight line or arc line shape, and the shape of the extension section 122 of the branch 120 is adapted to the shape of the main body 110.

[0036] It is worth noting that when the main body 110 is in a straight bar shape, the branch 120 is configured as a straight bar shape. When the branch 120 is in an arcuate bar shape, the branch 120 is configured as an arcuate bar shape. The main body 110 and the branch 120 are not limited to the two structures described above, and can also be configured as other special-shaped structures. Correspondingly, the branch 120 is configured in a shape that is compatible with the shape of the main body 110, and it is necessary to ensure that the branch 120 can overlap with the main body 110 after translation.

[0037] In another embodiment of this application, please refer to Figure 1 and Figure 2 The main body 110 is provided with a symmetrical first side wall portion 111 and a second side wall portion 112 . At least six branches 120 are provided on the first side wall portion 111 or the second side wall portion 112 . The six branches 120 are arranged side by side along the length direction of the main body 110 .

[0038] It is worth noting that the branches 120 can be provided on the first side portion 111 or the second side portion 112 of the main body 110. The number of branches 120 can be six or seven, etc., and can be arranged as needed. When there are multiple branches 120, the branches 120 can be arranged at equal intervals or at unequal intervals along the length of the main body 110. The six branches 120 can be connected to the main body 110 at the same end; or at least two of the six branches 120 can be connected to the main body 110 at different ends.

[0039] In another embodiment of this application, please refer to Figure 1 and Figure 2 The length of the main body 110 is between 1 / 2 and 3 / 4 of the wavelength of the lowest frequency point in the low-frequency working section of the corresponding antenna; the length of each branch 120 is between 1 / 5 and 1 / 3 of the wavelength of the center frequency point in the high-frequency working section of the corresponding antenna.

[0040] It can be understood that when the decoupling element 100 is applied to an antenna, the antenna has a radiating unit operating in a low-frequency operating range and a radiating element operating in a high-frequency operating range. The low-frequency operating range is a frequency range that is generally lower than the high-frequency operating range. The main body 110 has a length dimension between 1 / 2 and 3 / 4 of the wavelength of the lowest frequency point of the low-frequency operating range. The branch 120 has a length dimension between 1 / 5 and 1 / 3 of the wavelength of the center frequency point of the high-frequency operating range. Here, the length dimension of the branch 120 is the length dimension parallel to the main body 110. As an operative method, when the low-frequency operating range is 694-960 MHz and the high-frequency operating range is 1710-2690 MHz, the length of the main body 110 is 1 / 2 of the wavelength of the lowest frequency point of the low-frequency operating range, that is, it has a length dimension of 1 / 2 of the wavelength corresponding to 694 MHz. The branch 120 has a length dimension of 1 / 4 of the wavelength of the center frequency point of the high-frequency operating range, that is, it has a length dimension of 1 / 4 of the wavelength corresponding to 2.2 GHz.

[0041] The length dimension of the main body 110 of the decoupling element provided in this embodiment corresponds to the frequency range of the low-frequency working segment of the antenna, and the length dimension of the branch 120 corresponds to the frequency range of the high-frequency working segment of the antenna. The length dimensions of the main body 110 and the branch 120 can be adjusted according to the working frequency range of the antenna to adapt to multi-standard antennas operating within different working frequency ranges, and can better and specifically reduce cross-coupling between radiating units.

[0042] In another embodiment of this application, please refer to Figure 1 and Figure 2 The interval between the branch 120 and the main body 110 is 2 to 5 mm.

[0043] It is understood that the connecting section 121 of the branch 120 is connected to the main body 110. After the branch 120 is connected to the main body 110, the distance between the extension section 122 and the main body 110 is 2 to 5 mm. The distance between the branch 120 and the main body 110 here refers to the length of the gap between the branch 120 and the main body 110 in the direction from the branch 120 to the main body 110. As an operative embodiment, the connecting section 121 is a straight strip and is disposed perpendicular to the main body 110. The connecting section 121 and the extension section 122 can be integrally formed or separately formed as needed. The separately formed connecting section 121 and extension section 122 can be connected by welding or other means.

[0044] See also Figures 3 to 6 , the antenna 200 provided in an embodiment of the present application is now described. The antenna 200 includes a main reflector 230 and a decoupling element 100 according to any of the above embodiments.

[0045] Furthermore, the antenna 200 includes a first array 210 and a second array 220 arranged in parallel on a primary reflector 230. The first array 210 includes a plurality of first radiating elements 211 arranged on the primary reflector 230, and the second array 220 includes a plurality of second radiating elements 221 arranged on the primary reflector 230; the decoupling element 100 is arranged between the first radiating elements 211 of the first array 210 and the second radiating elements 221 of the second array 220.

[0046] It is worth noting that the first radiating element 211 may include only radiating elements operating within a single frequency range; it may also include multiple radiating elements operating within different frequency ranges, and the number of radiating elements operating within the same frequency range may be one or more. In this embodiment, the first radiating elements 211 of the first array 210 include radiating elements operating within a low-frequency operating range. The number of first radiating elements 211 in the first array 210 may be one, two, or the like, and may be set as needed. In this embodiment, the number of first radiating elements 211 in the first array 210 is three, namely, first radiating element 211-1, first radiating element 211-2, and first radiating element 211-3.

[0047] The second radiating unit 221 may also include only radiating elements operating within a frequency range; or it may include multiple radiating elements operating within different frequency ranges. Among the multiple radiating elements, the number of radiating elements operating within the same frequency range may be one or more. In this embodiment, the second radiating units 221 of the second array 220 include radiating elements operating within the same low-frequency operating range as the first radiating units 211. The second array 220 is arranged parallel and in parallel with the first array 210. The number of second radiating units 221 in the second array 220 can be one, two, etc., and can be set as needed. In this embodiment, the number of second radiating units 221 in the second array 220 is three, namely, the second radiating unit 221-1, the second radiating unit 221-2, and the second radiating unit 221-3.

[0048] In this embodiment, the decoupling element 100 is specifically arranged as follows: a decoupling element 100-1 is arranged between the first radiating unit 211-1 and the second radiating unit 221-1, a decoupling element 100-2 is arranged between the first radiating unit 211-2 and the second radiating unit 221-2, and a decoupling element 100-3 is arranged between the first radiating unit 211-3 and the second radiating unit 221-3.

[0049] In the antenna provided by the embodiment of the present application, when a signal is transmitted through the first radiating element 211 of the first array 210, each of the first radiating elements 211 will generate an electromagnetic field. For example, when the signal is transmitted on the first radiating element 211-1, the electromagnetic field generated by the first radiating element 211-1 will surround multiple second radiating elements 221 in the second array 220 and other first radiating elements 211 except the first radiating element 211-1 itself. With respect to the influence of the first radiating element 211 on the second radiating element 221, the electromagnetic field generated by the first radiating element 211-1 will be most strongly coupled to the second radiating element 221-1 in the second array 220. When the radiating element operating in the low-frequency working range of the first radiating element 211-1 transmits or receives electromagnetic waves, the main body 110 of the decoupling element 100-1 disposed between the first radiating element 211-1 and the second radiating element 221-1 can form an electron mirror, thereby reducing the influence of the first radiating element 211-1 on the second radiating element 221, and in particular reducing the influence on the second radiating element 221-1. Similarly, when the signal is transmitted through the second radiation element 221-1 of the second array 220, the decoupling element 100-1 arranged between the second radiation element 221-1 and the first radiation element 211-1 can reduce the influence of the second radiation element 221-1 on the first radiation element 211, especially reduce the coupling between the second radiation element 221-1 and the first radiation element 211-1.

[0050] In another embodiment of this application, please refer to Figures 3 to 6 A decoupling element 100 is provided between each of the first radiation units 211 of the first array 210 , and a decoupling element 100 is provided between each of the second radiation units 221 of the second array 220 .

[0051] In this embodiment, the decoupling element 100 is specifically arranged as follows: a decoupling element 100-4 is arranged between the first radiating unit 211-1 and the first radiating unit 211-2; a decoupling element 100-6 is arranged between the first radiating unit 211-2 and the first radiating unit 211-3; a decoupling element 100-5 is arranged between the second radiating unit 221-1 and the second radiating unit 221-2; and a decoupling element 100-7 is arranged between the second radiating unit 221-2 and the second radiating unit 221-3.

[0052] In the antenna provided by this embodiment, when a signal is transmitted through the first radiating elements 211 of the first array 210, each of the first radiating elements 211 generates an electromagnetic field. For example, when the signal is transmitted through the first radiating element 211-1, the electromagnetic field generated by the first radiating element 211-1 also affects the other first radiating elements in the first radiating element 211, excluding the first radiating element 211-1 itself. The electromagnetic field is greatest on the closest radiating element 211-2. In this case, the main body 110 of the decoupling element 100-4 disposed between the first radiating elements 211-1 and the first radiating elements 211-2 can form an electromagnetic mirror, thereby reducing the impact of the first radiating element 211-1 on the first radiating element 211-2. Similarly, when the signal is transmitted through the second radiating element 221-1, the decoupling element 100-5 disposed between the second radiating element 221-1 and the second radiating element 221-2 can reduce the impact of the second radiating element 221-1 on the other second radiating elements in the second radiating element 221, particularly reducing the coupling between the second radiating element 221-2 and the second radiating element 221-2.

[0053] In another embodiment of this application, please refer to Figures 3 to 6 The first radiating element 211 includes a low-frequency working unit 2111 and a high-frequency working unit 2112 disposed around the low-frequency working unit 2111. The low-frequency working unit 2111 is disposed at a higher height than the high-frequency working unit 2112. Four high-frequency working units 2112 are provided, and are disposed below the four corners of the low-frequency working unit 2111. Similarly, the second radiating element 221 has the same structure as the first radiating element 211. The second radiating element 221 includes a low-frequency working unit 2211 and a high-frequency working unit 2212 disposed around the low-frequency working unit 2211. The low-frequency working unit 2211 is disposed at a higher height than the high-frequency working unit 2212. Four high-frequency working units 2212 are provided, and are disposed below the four corners of the low-frequency working unit 2211.

[0054] It is worth noting that the decoupling element 100 is made of a conductive material and is fixedly connected to the main reflector 230 via an insulating member 240. The installation height of the decoupling element 100 is the same as the installation height of each low-frequency working unit 2111 and 2211. The same height here means that the radiation surfaces of the decoupling element 100, the low-frequency working unit 2111, and the low-frequency working unit 2211 are located on the same plane. Each first radiating unit 211 includes a low-frequency working unit 2111 and a high-frequency working unit 2112 disposed around the low-frequency working unit 2111. Each second radiating unit 221 includes a low-frequency working unit 2211 and a high-frequency working unit 2212 disposed around the low-frequency working unit 2211. The low-frequency band working unit 2111 and the low-frequency band working unit 2211 operate within the same operating frequency range, and the high-frequency band working unit 2112 and the high-frequency band working unit 2212 operate within the same operating frequency range, and the operating frequency range of the low-frequency band working unit 2111 and the low-frequency band working unit 2211 is lower than the operating frequency range of the high-frequency band working unit 2112 and the high-frequency band working unit 2212.

[0055] Specifically, the first radiation unit 211-1 includes a low-frequency band working unit 2111-1 and four high-frequency band working units 2112-1 arranged around the low-frequency band working unit 2111-2, the first radiation unit 211-2 includes a low-frequency band working unit 2111-2 and four high-frequency band working units 2112-2 arranged around the low-frequency band working unit 2111-2, and the first radiation unit 211-3 includes a low-frequency band working unit 2111-3 and four high-frequency band working units 2112-3 arranged around the low-frequency band working unit 2111-3. The second radiation unit 221-1 includes a low-frequency band working unit 2211-1 and a high-frequency band working unit 2212-1 arranged around the low-frequency band working unit 2211-1; the second radiation unit 221-2 includes a low-frequency band working unit 2211-2 and a high-frequency band working unit 2212-2 arranged around the low-frequency band working unit 2211-2; the second radiation unit 221-3 includes a low-frequency band working unit 2211-3 and a high-frequency band working unit 2212-3 arranged around the low-frequency band working unit 2211-3.

[0056] When a signal is transmitted through the first radiation element 211 of the first array 210, for example, when transmitted on the first radiation element 211-1, the electromagnetic field generated by the first radiation element 211-1 will affect the second radiation element 221 in the second array 220, that is, the low-frequency band working unit 2111 will generate cross-coupling with the low-frequency band working unit 2211. At this time, the main body 110 of the decoupling element 100-1 arranged between the first radiation element 211-1 and the second radiation element 221-1 will generate an electromagnetic mirror, thereby improving the isolation and radiation performance between the low-frequency band working unit 2111 and the low-frequency band working unit 2211. At the same time, under the excitation of the high-frequency electromagnetic field generated by the high-frequency band working unit 2112 and the high-frequency band working unit 2212, the current of the branch 120 of the decoupling element 100-1 is opposite to the current direction of the main body 110, and the high-frequency scattering of the decoupling element 100-1 as a whole cancels each other out, which has little impact on the radiation performance of the high-frequency band working unit 2112 and the high-frequency band working unit 2212.

[0057] See also Figure 7 From the comparison curve of the isolation between low-frequency band arrays before and after the antenna 200 uses the decoupling element 100, it can be seen that after the antenna 200 provided by this embodiment uses the decoupling element 100, the overall isolation between the array formed by the low-frequency band working units 2111 and the array formed by the low-frequency band working units 2211 operating in the low-frequency working section is improved by more than 5dB. Figure 8 From the current distribution of the decoupling element 100 under high-frequency excitation, it can be seen that the current in the branch 120 is opposite to the current in the main body 110, and the high-frequency scattering of the decoupling element 100 as a whole cancels each other out, significantly reducing the impact on the radiation performance of the unit operating in the high-frequency band. It can be seen that the antenna 200 provided in this embodiment can effectively improve the isolation and radiation performance between arrays operating in the low-frequency working range after using the decoupling element 100. Compared with existing decoupling elements, the decoupling element 100 can improve the isolation between arrays operating in the low-frequency working range while significantly reducing the impact on the radiation performance of arrays operating in the high-frequency working range. This is of great significance for reducing the size of the antenna 200 and improving the radiation performance of the antenna 200.

[0058] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A decoupling element, disposed between radiating elements of an antenna, characterized in that: The decoupling element includes a main body and at least one branch located in the same plane as the main body, and the branch and the main body are both made of conductive material; the branch includes a connected connecting section and an extended section, one end of the connecting section is vertically connected to the main body, and the other end of the connecting section is connected to the extended section, and the extended section is arranged parallel to the main body and extends in the direction of either end of the main body; the length of the main body is between 1 / 2 and 3 / 4 of the wavelength of the lowest frequency point in the low-frequency working section of the corresponding antenna; the length of the branch is between 1 / 5 and 1 / 3 of the wavelength of the center frequency point of the high-frequency working section of the corresponding antenna.

2. The decoupling element according to claim 1, characterized in that: The main body is in the shape of a straight line or an arc line, and the shape of the extended section of the branch is adapted to the main body.

3. The decoupling element according to claim 2, characterized in that: The main body is provided with a symmetrical first side wall portion and a second side wall portion, and at least six branches are provided on the first side wall portion or the second side wall portion, and the six branches are arranged side by side along the length direction of the main body.

4. The decoupling element according to any one of claims 1 to 3, characterized in that: The interval between the branch and the main body is 2 to 5 mm.

5. An antenna, characterized in that: The antenna includes a main reflector and the decoupling element according to any one of claims 1 to 4, and the decoupling element is arranged on the main reflector.

6. The antenna according to claim 5, wherein: The antenna includes a first array and a second array; the first array includes a plurality of first radiating units arranged on the main reflector, and the second array includes a plurality of second radiating units arranged on the main reflector; the decoupling element is arranged between the first radiating units of the first array and the second radiating units of the second array.

7. The antenna according to claim 6, wherein: The decoupling element is provided between each of the first radiating units of the first array, and the decoupling element is provided between each of the second radiating units of the second array.

8. The antenna according to claim 6, wherein: The first radiation unit and the second radiation unit respectively include a low-frequency band working unit and a high-frequency band working unit arranged around the low-frequency band working unit, and the setting height of the low-frequency band working unit is higher than that of the high-frequency band working unit; there are four high-frequency band working units, and they are respectively arranged under the four corners of the low-frequency band working unit.

9. The antenna according to claim 8, wherein: The arrangement height of the decoupling element is the same as the arrangement height of each of the low-frequency band working units.

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