Radiating unit and antenna device

Abstract

The invention relates to a radiation unit and an antenna device. The radiation unit comprises a radiation unit body and a supporting assembly. The radiation unit body comprises a radiation surface, a balun and a base, and the balun is connected between the radiation surface and the base; the supporting assembly comprises a supporting plate, a base and a plurality of supporting legs, a first avoiding notch is formed in the supporting plate, the supporting legs are arranged at intervals and connected between the supporting plate and the base, and the supporting plate, the supporting legs and the base are of an integrated structure; wherein the radiating surface is supported and fixed on the surface of one side, deviating from the base, of the supporting plate, the Balun and the base are inserted among the supporting legs through the first avoiding notches, the Balun is supported on the supporting legs in a limiting manner, and the base is supported and fixed on the base. The radiation unit and the antenna device are good in structural stability and easy to assemble.

Description

Technical Field

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

[0002] The radiation unit is the main part of the antenna, which can send and receive electromagnetic waves in a directional manner to achieve wireless communication. The radiation unit generally includes a radiation surface, a balun and a base. The components are welded together to form the radiation unit, and the components can also be supported by installing plastic parts. However, the radiation unit of the related art has the problems of poor structural stability and complex assembly. Summary of the invention

[0003] Based on this, it is necessary to provide a radiation unit and an antenna device with better structural stability and simpler assembly.

[0004] A first aspect of an embodiment of the present application provides a radiation unit, including a radiation unit body and a support assembly;

[0005] The radiation unit body includes a radiation surface, a balun and a base, and the balun is connected between the radiation surface and the base;

[0006] The support assembly includes a support plate, a base and a plurality of legs, the support plate is provided with a first avoidance notch, the plurality of legs are arranged at intervals and are all connected between the support plate and the base, and the support plate, the legs and the base are constructed as an integrated structure;

[0007] The radiation surface support is fixed to the side surface of the support plate away from the base, the balun and the base are inserted between the legs through the first avoidance gap, the balun limit support is on the legs, and the base support is fixed to the base.

[0008] In one embodiment, the feed balun includes a first balun ground and a second balun ground arranged at intervals along a preset direction, the first balun ground and the second balun ground are respectively supported on a leg, and the legs corresponding to the first balun ground and the second balun ground are respectively defined as a first leg and a second leg;

[0009] The first leg and the second leg are arranged at intervals along a preset direction, and are respectively arranged at opposite sides of the first balun ground and the second balun ground along the preset direction.

[0010] In one embodiment, the first balun ground and the base are constructed as an integral bent piece formed by bending the first balun ground relative to the base along a first rotation direction; the second balun ground and the base are constructed as an integral bent piece formed by bending the second balun ground relative to the base along a second rotation direction, one of the first rotation direction and the second rotation direction is counterclockwise, and the other is clockwise;

[0011] At least a portion of the first leg is disposed on one side of the first balun along the second rotation direction, and at least a portion of the second leg is disposed on one side of the second balun along the first rotation direction.

[0012] In one embodiment, the first leg includes a first leg body and a first flange portion, the first flange portion is connected to the end of the first leg body along the preset direction, and the second leg includes a second leg body and a second flange portion, the second flange portion is connected to the end of the second leg body along the preset direction;

[0013] The first flange portion and the second flange portion are respectively disposed on the opposite sides of the first balun ground and the second balun ground along a preset direction;

[0014] The first leg body is blocked at one side of the first balun along the second rotation direction, and the second leg body is blocked at one side of the second balun along the first rotation direction.

[0015] In one of the embodiments, the feed balun further includes a feed element, the feed element including a first feed portion and a second feed portion;

[0016] In the same feeding balun, the first balun ground and the second balun ground are arranged at intervals along a direction orthogonal to the preset direction, so as to define an insertion space between the first balun ground and the second balun ground, the feeding component is located in the insertion space, and the first feeding part and the second feeding part are respectively arranged on the first balun ground and the second balun ground;

[0017] At least one of the first leg body and the second leg body is provided with a positioning groove, and the positioning groove is used to position the first feeder or the second feeder.

[0018] In one embodiment, a second avoidance notch is provided on one side of the first balun ground and the second balun ground facing the base;

[0019] The support assembly further includes an auxiliary member integrally connected to the base, the auxiliary member being located between the legs and in the second avoidance notch of the first balun ground and the second balun ground;

[0020] At least one of the first power feeder and the second power feeder is supported and positioned on the auxiliary member.

[0021] In one embodiment, a retaining groove is provided on the top side of the auxiliary member facing away from the base, and at least one of the first feeding portion and the second feeding portion is inserted into the retaining groove; and / or,

[0022] A positioning protrusion is provided on the top side of the auxiliary component facing away from the base, and at least one of the first feeding portion and the second feeding portion abuts against the positioning protrusion.

[0023] In one embodiment, the radiation unit is a dual-polarization radiation unit, and the number of the feeding baluns is two; the two feeding baluns are respectively defined as a first feeding balun and a second feeding balun;

[0024] The first avoidance gap includes four gap portions connected at one end, and the four gap portions are arranged at positions orthogonal to each other so that the first balun ground and the second balun ground of the first feeding balun and the first balun ground and the second balun ground of the second feeding balun pass through one by one.

[0025] In one embodiment, the base includes a base body and four connecting arms extending outward from the base body, and the four connecting arms are respectively connected to the first balun ground and the second balun ground of the first feeding balun, and the first balun ground and the second balun ground of the second feeding balun;

[0026] The shapes of the four notches match the shapes of the four connecting arms, so that the four connecting arms pass through one by one.

[0027] In one embodiment, the radiating surface includes two radiating arms with orthogonal polarization directions, and the radiating arms and the feeding baluns are arranged in one-to-one correspondence; the radiating surface also includes a filter branch, and the radiating arm includes two frame-shaped sub-radiating arms, and the inner side of each sub-radiating arm is integrally connected with a filter branch to form at least one filter circuit;

[0028] The sub-radiating arm is supported on a bearing surface of the supporting plate away from the base; a first fixing portion is arranged on the bearing surface, the first fixing portion penetrates the radiating surface and is used to position the sub-radiating arm on the bearing surface.

[0029] In one embodiment, there is a gap between adjacent sub-radiating arms;

[0030] Auxiliary protrusions are also arranged on the bearing surface. The auxiliary protrusions penetrate through the intervals and respectively abut against the adjacent sub-radiating arms.

[0031] In one embodiment, the radiation unit body further includes an adjustment sheet, and the bearing surface is further provided with a second fixing portion, the second fixing portion penetrates the radiation surface and is used to clamp and position the adjustment sheet on the bearing surface.

[0032] In one of the embodiments, an auxiliary positioning column is further provided on the bearing surface, and the auxiliary positioning column is plug-fitted with the adjustment piece.

[0033] In one embodiment, a first positioning buckle is provided on the surface of the base facing the radiation surface, and the first positioning buckle is used to buckle the base to the base; and / or

[0034] A second positioning buckle is provided on the surface of the base facing away from the radiation surface, and the second positioning buckle is used to buckle the base with the reflection plate.

[0035] A second aspect of an embodiment of the present application provides an antenna device, including a reflector and the above-mentioned radiation unit, wherein the radiation unit is installed on the reflector.

[0036] The above-mentioned radiation unit and antenna device have the following beneficial effects:

[0037] By making the support assembly include a support plate, a base and a plurality of legs, the radiation surface is supported and fixed on the side surface of the support plate away from the base, the balun and the base are inserted between the legs through the first avoidance gap, the balun is limitedly supported on the legs, and the base is supported and fixed on the base. In other words, the radiation surface of the radiation unit body is supported on the support plate, the balun is supported on the legs, and the base is supported on the base. Therefore, the support assembly can better support all parts of the radiation unit body. Since the support plate, the legs and the base are constructed as an integrated structure, compared with the separate parts that can move relative to each other, the structural strength of the support assembly with an integrated structure to support the various parts of the radiation unit body is higher.

[0038] In addition, since the support plate is provided with a first avoidance gap, a plurality of legs are arranged at intervals and are all connected between the support plate and the base, the balun and the base are inserted between the legs through the first avoidance gap, the radiation surface support is fixed to the side surface of the support plate away from the base, and the base support is fixed to the base. With such an arrangement, it is only necessary to insert the balun and the base of the radiation unit body into the inner side of each leg through the first avoidance gap until the radiation surface is supported on the support plate and the base is supported on the base. The assembly process is relatively simple, and there is no need to install plastic parts for support at multiple positions as in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the decomposed structure of the radiation unit provided in an embodiment of the present application;

[0040] Figure 2 Another schematic diagram of the decomposed structure of the radiation unit provided in the embodiment of the present application;

[0041] Figure 3 A schematic diagram of the structure of the balun and the legs in the radiation unit provided in the embodiment of the present application;

[0042] Figure 4 A schematic diagram of a manufacturing process of a radiation unit body in a radiation unit provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of the structure of the feeder, balun ground and legs cooperating with each other in the radiation unit provided in an embodiment of the present application;

[0044] Figure 6 A schematic top view of the cooperation between the radiation unit body and the support assembly in the radiation unit provided in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of the structure of a radiation unit provided in an embodiment of the present application;

[0046] Figure 8 A schematic diagram of the structure of the adjustment sheet and the support assembly in the radiation unit provided in an embodiment of the present application cooperating with each other;

[0047] Fig. 9 A schematic diagram of the structure of another structure of an adjustment sheet and a support assembly cooperating with each other in a radiation unit provided in an embodiment of the present application;

[0048] Fig.10 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application;

[0049] Fig.11 A schematic cross-sectional view of the antenna device provided in an embodiment of the present application;

[0050] Fig.12 This is a comparison chart of the efficiency of the radiation unit provided in the embodiment of the present application and the radiation unit of the related art.

[0051] Description of Figure Numbers:

[0052] 1000, radiation unit;

[0053] 100. Radiating unit body;

[0054] 10. Radiating surface; 11. Balun;

[0055] 20, radiating arm; 2001, sub-radiating arm;

[0056] 30. filter branch; 300. open resonant ring; 31. first segment; 32. second segment; 33. third segment; 34. fourth segment;

[0057] 40. base; 41. connecting arm; 42. base body;

[0058] 50. Feed balun; 500. Balun ground; 501. First balun ground; 502. Second balun ground; 503. Second avoidance gap; 51. First feed balun; 52. Second feed balun;

[0059] 60, feeding element; 601, first feeding part; 602, second feeding part;

[0060] 80. pre-processed part; 81. center part; 82. extension part;

[0061] 200, support assembly;

[0062] 210, support plate; 211, first avoidance gap; 2111, gap portion;

[0063] 220, a leg; 221, a first leg; 2210, a first leg body; 2211, a first flange portion; 222, a second leg; 2220, a second leg body; 2221, a second flange portion; 223, a positioning groove;

[0064] 230, base; 231, first positioning buckle; 232, second positioning buckle; 233, bearing seat;

[0065] 240, auxiliary part; 241, retaining groove; 242, positioning protrusion;

[0066] 251, first fixing part; 252, auxiliary protrusion; 253, auxiliary positioning column; 254, second fixing part; 2541, first buckle; 2542, second buckle;

[0067] 260, adjustment piece; 261, opening;

[0068] 2000, antenna device; 310, reflector;

[0069] C, insertion space; F, first axis direction; S, second axis direction; Y, first rotation direction; E, second rotation direction. DETAILED DESCRIPTION

[0070] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention 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 invention. However, the present invention 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 invention, so the present invention is not limited by the specific embodiments disclosed below.

[0071] In the description of the present invention, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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 the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a 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.

[0075] It should be noted that when 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. When 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. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0076] The radiation unit and antenna device of the embodiments of the present application are described below with reference to the accompanying drawings.

[0077] Figure 1 A schematic diagram of the decomposed structure of the radiation unit provided in an embodiment of the present application; Figure 2 Another schematic diagram of the decomposed structure of the radiation unit provided in the embodiment of the present application; Figure 3 A schematic diagram of the structure of the balun and the legs in the radiation unit provided in the embodiment of the present application; Figure 4A schematic diagram of a manufacturing process of a radiation unit body in a radiation unit provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of the feeder, the balun and the legs cooperating with each other in the radiation unit provided in an embodiment of the present application; Figure 6 A schematic top view of the cooperation between the radiation unit body and the support assembly in the radiation unit provided in an embodiment of the present application; Figure 7 A schematic diagram of the structure of a radiation unit provided in an embodiment of the present application; Figure 8 A schematic diagram of the structure of the adjustment sheet and the support assembly in the radiation unit provided in an embodiment of the present application cooperating with each other; Fig. 9 A schematic diagram of the structure of another structure of an adjustment sheet and a support assembly cooperating with each other in a radiation unit provided in an embodiment of the present application; Fig.10 A schematic diagram of the structure of an antenna device provided in an embodiment of the present application; Fig.11 A schematic cross-sectional view of the antenna device provided in an embodiment of the present application.

[0078] Reference Figure 1 and Figure 2 An embodiment of the present application provides a radiation unit 1000 , including a radiation unit body 100 and a support assembly 200 .

[0079] The radiation unit body 100 includes a radiation surface 10, a balun 11 and a base 40, wherein the balun 11 is connected between the radiation surface 10 and the base 40. The balun 11 may include at least one feeding balun 50.

[0080] The support assembly 200 includes a support plate 210, a base 230 and a plurality of legs 220. The support plate 210 is provided with a first avoidance gap 211. The plurality of legs 220 are arranged at intervals and are all connected between the support plate 210 and the base 230. The support plate 210, the legs 220 and the base 230 are constructed as an integrated structure.

[0081] Among them, the radiation surface 10 is supported and fixed on the side surface of the support plate 210 away from the base 230, the balun 11 and the base 40 are inserted between the legs 220 through the first avoidance gap 211, the balun 11 is limitedly supported on the legs 220, and the base 40 is supported and fixed on the base 230.

[0082] By making the support assembly 200 include a support plate 210, a base 230 and a plurality of legs 220, the radiation surface 10 is supported and fixed on a side surface of the support plate 210 away from the base 230, the feed balun 50 and the base 40 are inserted between the legs 220 through the first avoidance gap 211, the balun 11 is limitedly supported on the legs 220, and the base 40 is supported and fixed on the base 230. In other words, the radiation surface 10 of the radiation unit body 100 is supported on the support plate 210, the balun 11 is supported on the legs 220, and the base 40 is supported and fixed on the base 230. Therefore, the support assembly 200 can better support each part of the radiation unit body 100. Since the support plate 210, the legs 220 and the base 230 are constructed as an integrally formed part, compared with the case where each part is formed separately and each part can move relative to each other, the structural strength of the support assembly 200 with an integral structure to support each part of the radiation unit body 100 is higher.

[0083] In addition, since the support plate 210 is provided with a first avoidance notch 211, a plurality of legs 220 are arranged at intervals and are all connected between the support plate 210 and the base 230, the balun 11 and the base 40 are inserted between the legs 220 through the first avoidance notch 211, the radiation surface 10 is supported and fixed on the side surface of the support plate 210 facing away from the base 230, and the base 40 is supported and fixed on the base 230. With such a configuration, it is only necessary to insert the balun 11 and the base 40 of the radiation unit body 100 into the inner side of each leg 220 through the first avoidance notch 211 until the radiation surface 10 is supported on the support plate 210 and the base 40 is supported on the base 230. The assembly process is relatively simple, and there is no need to install plastic parts for support at multiple positions as in the related art.

[0084] Combination Figure 1 and Figure 3 It can be understood that the balun 11 is connected between the radiation surface 10 and the base 40, for example, one end of the balun 11 is connected to the radiation surface 10, and the other end is connected to the base 40. The balun 11 may include at least one feeding balun 50, and each feeding balun 50 includes two balun grounds 500 and a feeding element 60.

[0085] The balun ground 500, the radiation surface 10 and the base 40 can be integrally formed, or can be formed separately and then welded together. In the embodiment of the present application, the balun ground 500, the radiation surface 10 and the base 40 are integrally formed as an example for explanation, and other situations are similar to this and are not repeated here.

[0086] The multiple legs 220 are arranged at intervals, for example, the projections of the multiple legs 220 on the support plate 210 may be spaced apart from each other, and the multiple legs 220 may extend in a direction perpendicular to the support plate 210, which is more conducive to processing and forming. In addition, the multiple legs 220 are all connected between the support plate 210 and the base 230, for example, the two ends of each leg 220 may be connected to the support plate 210 and the base 230 respectively.

[0087] The support plate 210 , the legs 220 and the base 230 are constructed as an integrally formed part, which means that the support plate 210 , the legs 220 and the base 230 are constructed as a whole, and each part can be formed by injection molding, for example.

[0088] In addition, the balun 11 and the base 40 are inserted between the legs 220 through the first avoidance gap 211 , which means that during installation, the balun 11 and the base 40 can pass through the first avoidance gap 211 and thus enter between the legs 220 .

[0089] In the embodiment of the present application, as mentioned above, the feed balun 50 includes two balun grounds 500, which can be defined as a first balun ground 501 and a second balun ground 502, respectively. Figure 3 For any feed balun 50, the feed balun 50 includes a first balun ground 501 and a second balun ground 502 arranged at intervals along a preset direction. The first balun ground 501 and the second balun ground 502 are each supported on a corresponding leg 220, and the legs 220 corresponding to the first balun ground 501 and the second balun ground 502 are defined as the first leg 221 and the second leg 222 respectively. The first leg 221 and the second leg 222 are arranged at intervals along the preset direction, and are respectively blocked at the opposite sides of the first balun ground 501 and the second balun ground 502 along the preset direction. In this way, the first balun ground 501 and the second balun ground 502 arranged opposite to each other along the preset direction can be blocked by the first leg 221 and the second leg 222 on the opposite sides, that is, the first balun ground 501 and the second balun ground 502 are sandwiched between the first leg 221 and the second leg 222.

[0090] When the radiation unit 1000 is a single-polarization radiation unit, the preset direction here may be, for example, a 0° direction. When the radiation unit 1000 is a dual-polarization radiation unit, the preset direction here may be, for example, one of two orthogonal polarization directions, such as positive 45° or negative 45°. The direction orthogonal to the preset direction may be the other of the two orthogonal polarization directions. When the preset direction is the positive 45° polarization direction, the direction perpendicular to the preset direction may be, for example, a negative 45° polarization direction.

[0091] Two mutually orthogonal first axis directions F and second axis directions S are defined on the radiation surface 10. Figure 3For the feed balun 50 at the upper left corner and the lower right corner of the figure, the preset direction is the first axis direction F, and the direction perpendicular to the preset direction is the second axis direction S. At this time, the first balun ground 501 and the second balun ground 502 included in the feed balun 50 are arranged at intervals along the first axis direction F, and the first leg 221 and the second leg 222 are also arranged at intervals along the first axis direction F, and are respectively blocked at the opposite sides of the first balun ground 501 and the second balun ground 502 along the first axis direction F.

[0092] And for Figure 3 For the feed balun 50 at the lower left corner and the upper right corner of the figure, the preset direction is the second axis direction S, and the direction perpendicular to the preset direction is the first axis direction F. At this time, the first balun ground 501 and the second balun ground 502 included in the feed balun 50 are arranged at intervals along the second axis direction S, and the first leg 221 and the second leg 222 are also arranged at intervals along the second axis direction S, and are respectively blocked at the opposite sides of the first balun ground 501 and the second balun ground 502 along the second axis direction S.

[0093] Furthermore, combined with Figure 3 and Figure 4 The first balun ground 501 and the base 40 are constructed as an integral bent piece formed by bending the first balun ground 501 relative to the base 40 along a first rotation direction Y. The second balun ground 502 and the base 40 are constructed as an integral bent piece formed by bending the second balun ground 502 relative to the base 40 along a second rotation direction E. One of the first rotation direction Y and the second rotation direction E is counterclockwise, and the other is clockwise. Figure 4 In the example, the first rotation direction Y is clockwise and the second rotation direction E is counterclockwise.

[0094] Further, refer to Figure 4 In the example where the radiation surface 10, the balun 500 and the base 40 are integrally formed, the manufacturing method may include, for example:

[0095] S10. Cut the flat metal plate to form a pre-processed part 80, which includes a central part 81, at least two extension parts 82 extending outward from the central part 81, and sub-radiating arms 2001 connected to the extension parts 82 one by one, and the sub-radiating arms 2001 are integrally connected with the filter branches 30 to form at least one filter circuit.

[0096] S20, each sub-radiating arm 2001 is vertically bent relative to the corresponding extension portion 82 toward a first side in the thickness direction of the metal plate. Here, the first side in the thickness direction of the metal plate may be, for example, Figure 4 The lower side shown in the middle figure.

[0097] S30, at the connection position between each extension part 82 and the central part 81, the extension part 82 is vertically bent relative to the central part 81 toward the second side, so that each sub-radiating arm 2001 is coplanar, wherein the second side is opposite to the first side. For the first balun ground 501 and the second balun ground 502 that are arranged opposite to each other, the first balun ground 501 is bent along the first rotation direction Y, and the second balun ground 502 is bent along the second rotation direction E.

[0098] In the embodiment of the present application, the metal plate may be a flat metal plate, for example, formed into a pre-processed piece by cutting and other processes. Here, a dual-polarized radiation unit is used as an example for description, and the case where the radiation unit 1000 is single-polarized is similar to this, and will not be repeated here.

[0099] In the above method, because the same flat metal plate is used to bend and form each part, there is no need for many PCB solder joints. Also, because the hardness of the metal itself can support the feed balun 50 and the radiation surface 10, the problem of using plastic parts for support in traditional PCB units is eliminated, the number of components is saved, the assembly and welding are simplified, and the efficiency of the radiation unit is improved. At the same time, because the radiation surface 10 and the balun ground 500 do not need to be electroplated, the cost is also reduced.

[0100] Further, refer to Figure 3 At least a portion of the first leg 221 is disposed on one side of the first balun ground 501 along the second rotation direction E, and at least a portion of the second leg 222 is disposed on one side of the second balun ground 502 along the first rotation direction Y.

[0101] At least a portion of the structure of the first leg 221 is disposed on one side of the first balun ground 501 along the second rotation direction E, so that the first leg 221 can limit the first balun ground 501 from rotating in the second rotation direction E, so that the first balun ground 501 remains at a preset position and cannot fall in the second rotation direction E. At least a portion of the structure of the second leg 222 is disposed on one side of the second balun ground 502 along the first rotation direction Y, so that the second leg 222 can limit the second balun ground 502 from rotating in the first rotation direction Y, so that the second balun ground 502 can also remain at a preset position and cannot fall in the first rotation direction Y.

[0102] In the embodiment of the present application, the first leg 221 includes a first leg body 2210 and a first flange portion 2211, the first flange portion 2211 is connected to the end of the first leg body 2210 along a preset direction, and the second leg 222 includes a second leg body 2220 and a second flange portion 2221, the second flange portion 2221 is connected to the end of the second leg body 2220 along the preset direction.

[0103] The first flange portion 2211 and the second flange portion 2221 are respectively disposed on opposite sides of the first balun ground 501 and the second balun ground 502 along a preset direction.

[0104] The first leg body 2210 is disposed on one side of the first balun ground 501 along the second rotation direction E, and the second leg body 2220 is disposed on one side of the second balun ground 502 along the first rotation direction Y.

[0105] In a specific implementation, a half-open first limiting space F1 is defined between the first flange portion 2211 and the surface of the first leg 221, and one end of the first balun ground 501 away from the second balun ground 502 is pressed against the first limiting space F1. A half-open second limiting space F2 is defined between the second flange portion 2221 and the surface of the second leg 222, and one end of the second balun ground 502 away from the first balun ground 501 is pressed against the second limiting space F2.

[0106] In the present application, refer to Figure 5 The feeding balun 50 further includes a feeding element 60, and the feeding element 60 includes a first feeding portion 601 and a second feeding portion 602. It can be understood that, for ease of observation, Figure 5 In the figure on the upper side of the figure, one of the feeders 60 is omitted. Figure 5 In the lower drawing, both feeding elements 60 are omitted.

[0107] The same feed balun 50, combined with Figure 5 and Figure 6 , the first balun ground 501 and the second balun ground 502 are arranged at intervals along a direction orthogonal to the preset direction, so as to define an insertion space C between the first balun ground 501 and the second balun ground 502, and the feeder 60 is located in the insertion space C. The first feeder 601 and the second feeder 602 are respectively provided at the first balun ground 501 and the second balun ground 502. In addition, the feeder 60 may further include a third feeder connected between the first feeder 601 and the second feeder 602.

[0108] At least one of the first leg body 2210 and the second leg body 2220 is provided with a positioning groove 223 , and the positioning groove 223 is used to position the first feeding portion 601 or the second feeding portion 602 .

[0109] It can be understood that when the first feeder 601 and the second feeder 602 are respectively arranged on the first balun ground 501 and the second balun ground 502, the first feeder 601 forms a transmission line with the first balun ground 501, and the second feeder 602 also forms a transmission line with the second balun ground 502. In specific implementation, the feeder 60 can be configured as a printed circuit board, so that the positioning groove 223 can be set to a shape that matches the edge profile of the first feeder 601 and the second feeder 602 of the feeder 60. The positioning groove 223 can be located between the second flange portion 2221 and the first flange portion 2211.

[0110] Furthermore, combined with Figure 1 and Figure 5 The first balun ground 501 and the second balun ground 502 are provided with a second avoidance gap 503 on one side facing the base 40. The support assembly 200 further includes an auxiliary member 240 integrally connected to the base 230, the auxiliary member 240 is located between the legs 220 and in the second avoidance gap 503 of the first balun ground 501 and the second balun ground 502.

[0111] Combination Figure 3 and Figure 5 As shown, at least one of the first feeding portion 601 and the second feeding portion 602 is supported and positioned on the auxiliary member 240. Figure 5 In the feeding element 60 illustrated in FIG. 2 , the first feeding portion 601 is supported and positioned on the auxiliary element 240 .

[0112] In a specific implementation, a retaining groove 241 is provided on the top side of the auxiliary member 240 away from the base 230, and at least one of the first feeder 601 and the second feeder 602 is inserted into the retaining groove 241. A positioning protrusion 242 is provided on the top side of the auxiliary member 240 away from the base 230, and at least one of the first feeder 601 or the second feeder 602 abuts against the positioning protrusion 242.

[0113] In the present application embodiment, combined Figure 1 , Figure 3 and Figure 6 ,exist Figure 6 In the figure, for the convenience of observation, the radiation surface 10 is omitted. The radiation unit 1000 is a dual-polarization radiation unit, and the number of the feeding baluns 50 is two. The two feeding baluns 50 are defined as a first feeding balun 51 and a second feeding balun 52, respectively.

[0114] The first avoidance gap 211 includes four gap portions 2111 connected at one end. The four gap portions 2111 are arranged at positions orthogonal to each other so that the first balun ground 501 and the second balun ground 502 of the first feeding balun 51 and the first balun ground 501 and the second balun ground 502 of the second feeding balun 52 pass through them one by one.

[0115] Furthermore, the base 40 includes a base body 42 and four connecting arms 41 extending outward from the base body 42 , and the four connecting arms 41 are respectively and integrally connected to the first balun ground 501 and the second balun ground 502 of the first feeding balun 51 , and the first balun ground 501 and the second balun ground 502 of the second feeding balun 52 .

[0116] The shapes of the four notches 2111 match the shapes of the four connecting arms 41 so that the four connecting arms 41 pass through one by one. Thus, during installation, the base 40 together with the feeding balun 50 can be inserted into the supporting assembly 200 through the four notches 2111 .

[0117] In the present application, refer to Figure 2 When the radiation unit 1000 is a dual-polarization radiation unit, the radiation surface 10 includes two radiation arms 20 with orthogonal polarization directions, and the radiation arms 20 and the feed balun 50 are arranged one by one. The radiation surface 10 also includes a filter branch 30, each radiation arm 20 includes two frame-shaped sub-radiation arms 2001, and the inner side of each sub-radiation arm 2001 is integrally connected with a filter branch 30 to form at least one filter circuit.

[0118] The filter circuit includes an open resonant ring 300, and the operating frequency of the sub-radiating arm 2001 is greater than or equal to the first frequency and less than or equal to the second frequency. The induced current on the open resonant ring 300 by the electromagnetic radiation greater than the second frequency can offset the induced current on the sub-radiating arm 2001. Here, the operating frequency of the sub-radiating arm 2001 can be, for example, 690 MHz-960 MHz.

[0119] In the present application, continue to refer to Figure 2 , the upper radiation section of the sub-radiation arm 2001 is defined as the first segment 31, the filter branch 30 includes a second segment 32 arranged opposite to the first segment 31, a third segment 33 connected to the same end of the first segment 31 and the second segment 32, and a fourth segment 34 connected to the end of the first segment 31 away from the third segment 33. The first segment 31, the second segment 32, the third segment 33 and the fourth segment 34 jointly define the above-mentioned open resonant ring 300, and the end of the fourth segment 34 away from the first segment 31 is spaced apart from the end of the second segment 32 away from the third segment 33 to define the opening of the open resonant ring 300.

[0120] Since the opening is located between the end of the second segment 32 and the end of the fourth segment 34, that is, the opening is offset relative to the middle of the second segment 32 and the middle of the fourth segment 34, the opening is offset relative to the middle of the open resonant ring 300, so that the open resonant ring 300 forms a biased open ring filter structure loaded on the sub-radiating arm 2001, which is beneficial to expanding the bandwidth of the filtering frequency band.

[0121] Further, in Figure 7 In the example, for ease of observation, Figure 7 In the schematic diagram below the drawing, the radiation surface 10 is omitted. In specific implementation, the sub-radiation arm 2001 is supported on the bearing surface of the support plate 210 away from the base 230. A first fixing portion 251 is provided on the bearing surface, which passes through the radiation surface 10 and is used to position the sub-radiation arm 2001 on the bearing surface. The first fixing portion 251 can be, for example, a hook, which hooks the sub-radiation arm 2001 on the support plate 210. The number of first fixing portions 251 can be multiple, and multiple first fixing portions 251 can appear in pairs. The first fixing portion 251 can be set to pass through the open resonant ring 300.

[0122] In the embodiment of the present application, there is further a gap between adjacent sub-radiating arms 2001, and an auxiliary protrusion 252 is further provided on the bearing surface, the auxiliary protrusion 252 runs through the gap and respectively abuts against the adjacent sub-radiating arms 2001. Such a configuration is conducive to maintaining the distance between the two sub-radiating arms 2001. The auxiliary protrusion 252 can be located between two first fixing portions 251 that appear in pairs.

[0123] In the present application embodiment, combined Figure 7 and Figure 8 The radiation unit body 100 also includes an adjustment sheet 260, and a second fixing portion 254 is also provided on the bearing surface. The second fixing portion 254 penetrates the radiation surface 10 and is used to clamp and position the adjustment sheet 260 on the bearing surface. The second fixing portion 254 may include a first buckle 2541, and the first buckle 2541 is used to clamp the adjustment sheet 260 on the support plate 210. Here, the position of the second fixing portion 254 is set accordingly according to the different shapes of the adjustment sheet 260. For example, when the shape of the adjustment sheet 260 is a cross, each first buckle 2541 is set corresponding to the outer contour shape of the adjustment sheet 260, so that the adjustment sheet 260 can be buckled and fixed at different positions.

[0124] Reference Fig. 9 In some other embodiments, if the adjustment sheet 260 is larger and covers the first buckle 2541 , an opening 261 may be provided on the adjustment sheet 260 so that the first buckle 2541 passes through the opening 261 and is hooked on the edge of the opening 261 .

[0125] In some other embodiments, the adjustment sheet 260 may also be disposed coplanarly with the frame-shaped sub-radiating arm 2001, for example Fig. 9 The second fixing portion 254 may include a second buckle 2542 , which passes through the opening 261 on the adjusting piece 260 and is hooked on the edge of the opening 261 .

[0126] Furthermore, combined with Figure 8 and Fig. 9 The bearing surface is also provided with an auxiliary positioning column 253, which is plugged into and matched with the adjustment sheet 260. It can assist in positioning the adjustment sheet 260 and prevent the adjustment sheet 260 from moving relative to the radiation surface 10.

[0127] In the present application, refer to Figure 2 and Fig. 9 A first positioning buckle 231 is provided on the surface of the base 230 facing the radiation surface 10 , and the first positioning buckle 231 is used to buckle the base 40 to the base 230 .

[0128] Furthermore, a second positioning buckle 232 is provided on the surface of the base 230 facing away from the radiation surface 10 , and the second positioning buckle 232 is used to buckle the base 230 with the reflection plate 310 .

[0129] When implementing it, refer to Figure 1 When the base 40 includes four connecting arms 41, the base 230 may include a supporting seat 233 corresponding to the four connecting arms 41, and the supporting seat 233 is correspondingly supported between the connecting arms 41 and the reflective plate 310, and each supporting seat 233 is correspondingly provided with a first positioning buckle 231 and a second positioning buckle 232.

[0130] Reference Fig.10 , Fig.11 In a second aspect, an embodiment of the present application further provides an antenna device 2000 , comprising a reflection plate 310 and 1000 as described above, wherein the radiation unit 1000 is installed on the reflection plate 310 .

[0131] Reference Figure 1 When installing the radiation unit 1000 of the embodiment of the present application, it is only necessary to insert the radiation unit body 100 into the support assembly 200 through the first avoidance gap 211, and then pass the second positioning buckle 232 through the reflection plate 310 and buckle it to the reflection plate 310, and buckle the first fixing part 251 on the radiation surface 10 to complete the assembly. The assembly process is relatively simple.

[0132] The performance of the radiation unit in the embodiment of the present application is tested below.

[0133] Fig.12 This is a comparison chart of the efficiency of the radiation unit provided in the embodiment of the present application and the radiation unit of the related art. In the radiation unit of the related art, the radiation surface is in the form of PCB, and each part is in the form of welding. Fig.12 In the figure, the horizontal axis is the operating frequency of the radiation unit, and the vertical axis is the efficiency value. Fig.12It can be seen that the efficiency of the radiation unit 1000 of the present application is always greater than the efficiency of the radiation unit in the related art within its operating frequency band (roughly within the range of 690 GHz-960 GHz).

[0134] 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.

[0135] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A radiation unit, characterized in that: It includes a radiation unit body and a supporting assembly; The radiation unit body includes a radiation surface, a balun and a base, and the balun is connected between the radiation surface and the base; The support assembly comprises a support plate, a base and a plurality of legs, the support plate is provided with a first avoidance notch, the plurality of legs are arranged at intervals and are all connected between the support plate and the base, and the support plate, the legs and the base are constructed as an integrated structure; The radiation surface support is fixed to a side surface of the support plate away from the base, the balun and the base are inserted between the legs through the first avoidance gap, the balun is limitedly supported on the legs, and the base support is fixed to the base.

2. The radiation unit according to claim 1, characterized in that: The balun includes at least one feeding balun, the feeding balun includes a first balun ground and a second balun ground arranged at intervals along a preset direction, the first balun ground and the second balun ground are respectively supported on one of the legs, and the legs corresponding to the first balun ground and the second balun ground are respectively defined as a first leg and a second leg; The first supporting leg and the second supporting leg are arranged at intervals along the preset direction, and are respectively arranged at opposite sides of the first balun ground and the second balun ground along the preset direction.

3. The radiation unit according to claim 2, characterized in that: The first balun ground and the base are constructed as an integral bent piece formed by bending the first balun ground relative to the base along a first rotation direction; the second balun ground and the base are constructed as an integral bent piece formed by bending the second balun ground relative to the base along a second rotation direction, one of the first rotation direction and the second rotation direction is a counterclockwise direction, and the other is a clockwise direction; At least a portion of the first leg is blocked on one side of the first balun ground along the second rotation direction, and at least a portion of the second leg is blocked on one side of the second balun ground along the first rotation direction.

4. The radiation unit according to claim 3, characterized in that: The first leg comprises a first leg body and a first flange portion, wherein the first flange portion is connected to an end portion of the first leg body along the preset direction, and the second leg comprises a second leg body and a second flange portion, wherein the second flange portion is connected to an end portion of the second leg body along the preset direction; The first flange portion and the second flange portion are respectively disposed on opposite sides of the first balun ground and the second balun ground along the preset direction; The first leg body is blocked at one side of the first balun ground along the second rotation direction, and the second leg body is blocked at one side of the second balun ground along the first rotation direction.

5. The radiation unit according to claim 4, characterized in that: The feed balun further includes a feed element, wherein the feed element includes a first feed portion and a second feed portion; In the same feeding balun, the first balun ground and the second balun ground are arranged at intervals along a direction orthogonal to the preset direction to define an insertion space between the first balun ground and the second balun ground, the feeding component is located in the insertion space, and the first feeding part and the second feeding part are respectively arranged on the first balun ground and the second balun ground; At least one of the first leg body and the second leg body is provided with a positioning groove, and the positioning groove is used to position the first feeder or the second feeder.

6. The radiation unit according to claim 5, characterized in that: A second avoidance gap is provided on one side of the first balun ground and the second balun ground facing the base; The support assembly further comprises an auxiliary member integrally connected to the base, the auxiliary member being located between the legs and in the second avoidance notches of the first balun ground and the second balun ground; At least one of the first power feeder and the second power feeder is supported and positioned on the auxiliary member.

7. The radiation unit according to claim 6, characterized in that: The auxiliary member is provided with a locking groove on the top side facing away from the base, and at least one of the first feeding part and the second feeding part is inserted into the locking groove; and / or, A positioning protrusion is provided on the top side of the auxiliary component facing away from the base, and at least one of the first feeding portion and the second feeding portion abuts against the positioning protrusion.

8. The radiation unit according to any one of claims 2 to 7, characterized in that: The radiation unit is a dual-polarization radiation unit, and the number of the feed baluns is two; the two feed baluns are respectively defined as a first feed balun and a second feed balun; The first avoidance gap includes four gap portions connected at one end, and the four gap portions are arranged at positions orthogonal to each other so that the first balun ground and the second balun ground of the first feeding balun, and the first balun ground and the second balun ground of the second feeding balun can pass through one by one.

9. The radiation unit according to claim 8, characterized in that: The base includes a base body and four connecting arms extending outward from the base body, wherein the four connecting arms are respectively and integrally connected to the first balun ground and the second balun ground of the first feeding balun, and the first balun ground and the second balun ground of the second feeding balun; The shapes of the four notches match the shapes of the four connecting arms, so that the four connecting arms pass through them one by one.

10. The radiation unit according to claim 8, characterized in that, The radiating surface includes two radiating arms with orthogonal polarization directions, and the radiating arms and the feeding balun are arranged in a one-to-one correspondence; the radiating surface also includes a filter branch, and the radiating arm includes two frame-shaped sub-radiating arms, and the inner side of each of the sub-radiating arms is integrally connected with the filter branch to form at least one filter circuit; The sub-radiating arm is supported on a bearing surface of the supporting plate which faces away from the base; a first fixing portion is provided on the bearing surface, and the first fixing portion penetrates the radiating surface and is used to position the sub-radiating arm on the bearing surface.

11. The radiation unit according to claim 10, characterized in that, There is a gap between adjacent sub-radiating arms; Auxiliary protrusions are also provided on the bearing surface. The auxiliary protrusions penetrate the intervals and abut against the adjacent sub-radiating arms respectively.

12. The radiation unit according to claim 10, wherein The radiation unit body further comprises an adjustment sheet, and the bearing surface is further provided with a second fixing portion, which penetrates through the radiation surface and is used for clamping and positioning the adjustment sheet on the bearing surface.

13. The radiation unit according to claim 12, characterized in that: The bearing surface is also provided with an auxiliary positioning column, and the auxiliary positioning column is plug-fitted with the adjustment piece.

14. The radiation unit according to any one of claims 2 to 7, characterized in that: A first positioning buckle is provided on a surface of the base facing the radiation surface, and the first positioning buckle is used to buckle the base to the base; and / or A second positioning buckle is provided on the surface of the base facing away from the radiation surface, and the second positioning buckle is used to buckle the base with the reflection plate.

15. An antenna device, characterized in that: The invention comprises a reflecting plate and a radiation unit according to any one of claims 1 to 14, wherein the radiation unit is installed on the reflecting plate.

Images