Array antenna high-performance radiation boundary
By introducing baffles and metal regions into the array antenna design, the RF channel problem caused by mutual coupling in large-scale array antennas is solved, improving isolation and directivity, and enhancing radiation performance.
Patent Information
- Application Number
- CN202520197880.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-08
AI Technical Summary
Mutual coupling between radiating element modules in a large-scale array antenna leads to RF channel pattern distortion, poor consistency, and deterioration of isolation.
A baffle is introduced into the array antenna, with a metal area and a blank area. It is formed by copper cladding. Adjacent antenna radiating elements are symmetrically separated. The shape and size of the metal area are designed to meet different electrical performance requirements and reduce mutual coupling effects.
It improves the isolation between antenna radiating elements, enhances the horizontal half-power beamwidth and antenna cross-polarization performance, and improves directivity and gain.
Smart Images
Figure CN223729021U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to antenna engineering technical field, especially relate to a kind of array antenna high-performance radiation boundary. BACKGROUND
[0002] The huge demand of human society for information data transmission promotes the continuous development of communication technology, and each upgrade of mobile communication corresponds to about 10 times the improvement of downlink rate. With the characteristics of high speed, large capacity and low delay, 5G can meet the demand of people for network connection of super large flow, super many device connection number and super high mobility. As one of the key technologies of 5G, large-scale antenna technology constructs different beams towards multiple target customers through beam forming technology, and effectively reduces the interference between each beam. This full exploitation of space resources can effectively utilize valuable and scarce frequency band resources and improve network capacity by dozens of times.
[0003] Large-scale array antenna is one of the key technologies of the 5th generation mobile communication, which is composed of a plurality of dual-polarized radiation units arranged according to certain horizontal and vertical spacing. Due to the large number of radiation units and the small horizontal spacing (<0.55λ) between the radiation units, the mutual coupling between the radiation unit modules is very large, which causes the distortion of the directional diagram of each radio frequency channel, poor consistency and deterioration of isolation.
[0004] Therefore, in view of the deficiencies of the prior art, it is necessary to design an array antenna high-performance radiation boundary to solve the above problems.
[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical scheme of the utility model, and for the convenience of understanding by those skilled in the art, and the above content cannot be considered as known by those skilled in the art because the above content is described in the background of the utility model. CONTENT OF THE UTILITY MODEL
[0006] In order to overcome the deficiencies in the prior art, the utility model aims at disclosing an array antenna high-performance radiation boundary, which is used to solve the problems of distortion of radio frequency channel directional diagram, poor consistency and deterioration of isolation caused by large mutual coupling between each radiation unit module in large-scale array antenna.
[0007] The utility model discloses an array antenna high-performance radiation boundary, which comprises a feeding power divider, a plurality of antenna radiation units are arranged on the feeding power divider, the antenna radiation units are arranged in an array structure along the horizontal direction and the vertical direction, adjacent antenna radiation units are symmetrically separated by a baffle, the baffle is vertically arranged on the feeding power divider, a plurality of metal areas are arranged on the side surface of the baffle, the metal areas are directly formed on the baffle by copper cladding process, and the metal areas are separated by blank areas.
[0008] The transverse interval of the adjacent antenna radiation units is less than 0.55λ, the height of the baffle, the width of the metal area and the blank area are all less than 0.5λ, and λ is the central wavelength of the antenna radiation unit.
[0009] The metal areas are equidistantly arranged on the baffle, and the central interval between any two adjacent metal areas is less than 0.5λ.
[0010] The antenna radiation unit is a dual-polarized radiation unit.
[0011] The baffle is a PCB board.
[0012] The metal area on the baffle can adopt any one of a single-sided copper cladding process and a double-sided copper cladding process.
[0013] The metal areas on the same baffle are consistent in shape and size, and the metal areas can be any one of a circle, an X shape and a polygon, so as to adapt to different electrical performance needs.
[0014] The adjacent metal areas on the baffle are staggered by being mutually reversed, so as to reduce the mutual coupling effect between the antenna radiation unit arrays.
[0015] The adjacent metal areas on the baffle are symmetrically arranged, so as to improve the directivity and gain of the antenna.
[0016] The lower end of the baffle is provided with a plug, the feeding power dividing board is provided with a slot at a position corresponding to the plug, and the baffle and the feeding power dividing board are electrically connected through a welding process, so that the installation is facilitated and the connection is stable.
[0017] Thanks to the above technical scheme, the array antenna high-performance radiation boundary has the following beneficial effects compared with the prior art:
[0018] The array antenna high-performance radiation boundary sets a baffle at the middle position of the antenna radiation unit, realizes the decoupling function by using the metal area formed by the interval copper on the baffle, improves the isolation between the antenna radiation units, converges the horizontal half-power beam width, improves the antenna cross polarization, and adapts to different electrical performance needs by designing different shapes and sizes of the metal area, so that the application range is wide and the switching operation is simple. BRIEF DESCRIPTION OF DRAWINGS
[0019] For more clearly illustrating the technical solutions in the specific embodiments or the prior art of the present application, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings described in the following are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.
[0020] Figure 1 A structure diagram of the high-performance radiation boundary of the array antenna of the present application;
[0021] Figure 2 A side view of the high-performance radiation boundary of the array antenna of the present application;
[0022] Figure 3 A structure diagram of the baffle in Embodiment One;
[0023] Figure 4 A structure diagram of the baffle in Embodiment Two.
[0024] In the above drawings, 1, a feeding power divider; 2, an antenna radiation unit; 3, a baffle; 31, a metal area; 32, a blank area; 33, a plug. DETAILED DESCRIPTION
[0025] The embodiments of the present application will be described in detail by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in the present specification.
[0026] It should be noted that the terms "first", "second", and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application. In addition, the terms "include" and "have" and their synonyms, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0027] In the present application, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0028] And, in addition to the above-mentioned partial terms can be used to indicate the orientation or positional relationship, it can also be used to indicate other meanings, for example, the term "upper" in some cases can also be used to indicate a certain dependent relationship or connection relationship. For those skilled in the art, the specific meaning of these terms in the utility model can be understood according to the specific circumstances.
[0029] In addition, the terms "mounting", "setting", "provided with", "connecting", "connecting", "sleeving", "fitting" should be broadly understood. For example, "connecting" can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For example, "fitting" can be completely attached or partially attached. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0030] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0031] Embodiment one:
[0032] As shown in Figure 1 , Figure 2 and Figure 3 , the utility model discloses a kind of array antenna high-performance radiation boundary, including feed power divider 1, there are several antenna radiation units 2 on feed power divider 1, antenna radiation unit 2 is arranged along horizontal transverse and longitudinal and forms array structure, the transverse spacing of adjacent antenna radiation unit 2 is less than 0.55 λ;Adjacent antenna radiation unit 2 is symmetrically separated by baffle 3, baffle 3 is vertically arranged on feed power divider 1, the side of baffle 3 is equipped with several metal areas 31, metal area 31 is directly formed on baffle 3 by copper cladding process, metal area 31 is separated by blank area 32, the height of baffle 3, the width of metal area 31 and blank area 32 are all less than 0.5 λ, and λ is the center wavelength of antenna radiation unit 2, metal area 31 is equidistantly arranged on baffle 3, and the center distance between any two adjacent metal areas 31 is less than 0.5 λ;It should be noted that in other embodiments, metal area 31 can also be arranged unequally on baffle 3.
[0033] As shown in Figure 1 , Figure 2 and Figure 3 , antenna radiation unit 2 is a dual-polarized radiation unit.
[0034] As shown in Figure 1 , Figure 2 andFigure 3 The baffle 3 is a PCB board.
[0035] As shown in Figure 1 , Figure 2 and Figure 3 , the metal area 31 on the baffle 3 can be processed and manufactured according to the electrical performance requirements by using a single-sided copper cladding process or a double-sided copper cladding process.
[0036] As shown in Figure 1 , Figure 2 and Figure 3 , the adjacent metal areas 31 on the baffle 3 are symmetrically arranged to improve the directivity and gain of the antenna.
[0037] As shown in Figure 1 , Figure 2 and Figure 3 , the baffle 3 is provided with a plug 33 at the lower end, and the feed power divider 1 is provided with a slot at the corresponding position of the plug 33. The baffle 3 and the feed power divider 1 are electrically connected by a welding process. The plug 33 and the slot are used to realize the quick positioning and installation of the baffle 3, and the welding is used to ensure the stable electrical connection between the baffle 3 and the feed power divider 1.
[0038] Embodiment two: as shown in Figure 1 , Figure 2 and Figure 4 , the difference between this embodiment and embodiment one is that the shape of the metal area 31 is a triangle, and the adjacent metal areas 31 on the baffle 3 are staggered and inverted to each other to reduce the mutual coupling effect between the antenna radiation unit 2 array. It should be noted that the shape and size of the metal area 31 on the same baffle 3 are consistent, and the metal area 31 can also be processed into a circle, an X shape or a polygon according to the electrical performance requirements.
[0039] The array antenna high-performance radiation boundary can separate the antenna radiation unit by the metal areas arranged at intervals with the cooperation of the baffle, can reduce the mutual coupling influence of the dense array, and can improve the directivity characteristic and port isolation of each radio frequency channel.
[0040] Finally, it should be pointed out that the above is only a preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A high-performance radiation boundary for an array antenna, comprising a power distribution board (1), wherein the power distribution board (1) is provided with a plurality of antenna radiation elements (2), characterized in that: The antenna radiating units (2) are arranged in a horizontal and vertical array structure. Adjacent antenna radiating units (2) are symmetrically separated by baffles (3). The baffles (3) are vertically arranged on the power distribution board (1). The side of the baffles (3) is provided with several metal areas (31). The metal areas (31) are all directly formed on the baffles (3) by copper plating process. The metal areas (31) are separated by blank areas (32).
2. The high-performance radiation boundary of an array antenna according to claim 1, characterized in that: The lateral spacing between adjacent antenna radiating elements (2) is less than 0.55λ, and the height of the baffle (3), the width of the metal area (31) and the blank area (32) are all less than 0.5λ, where λ is the center wavelength of the antenna radiating element (2).
3. The high-performance radiation boundary of an array antenna according to claim 2, characterized in that: The metal areas (31) are arranged at equal intervals on the baffle (3), and the center distance between any two adjacent metal areas (31) is less than 0.5λ.
4. The high-performance radiation boundary of an array antenna according to claim 1, characterized in that: The antenna radiating element (2) is a dual-polarized radiating element.
5. The high-performance radiation boundary of an array antenna according to claim 1, characterized in that: The baffle (3) is a PCB board.
6. The high-performance radiation boundary of an array antenna according to claim 5, characterized in that: The metal area (31) on the baffle (3) can be made using either single-sided copper cladding or double-sided copper cladding.
7. The high-performance radiation boundary of an array antenna according to claim 6, characterized in that: The shape and size of the metal area (31) on the same baffle (3) are consistent, and the metal area (31) can be any one of circular, X-shaped and polygonal.
8. The high-performance radiation boundary of an array antenna according to claim 7, characterized in that: The adjacent metal areas (31) on the baffle (3) are arranged in an alternating manner with their positions reversed.
9. The high-performance radiation boundary of an array antenna according to claim 7, characterized in that: The baffle (3) is symmetrically arranged adjacent to the metal area (31).
10. The high-performance radiation boundary of an array antenna according to claim 1, characterized in that: The lower end of the baffle (3) is provided with a plug (33), and the power distribution board (1) is provided with a slot at the corresponding position of the plug (33). The baffle (3) and the power distribution board (1) are electrically connected by welding process.