WO2021119939A1 - Aantenna radiation assembly and antenna system - Google Patents

Abstract

Provided in the present invention is an antenna radiation assembly, comprising an integrally formed isolation frame, a circuit board detachably mounted in the isolation frame, at least two radiating units mounted detachably and at an interval on the circuit board, and a plurality of isolation panels arranged between the radiating units, the isolation panels being detachably mounted in the isolation frame. The antenna radiation assembly of the present invention does not require welding processing during assembly and production, simplifying production processing, while also avoiding the occurrence of regional performance indicator anomalies due to poor welding consistency, thus improving the stability of the overall performance of the antenna radiation assembly.

Description

Antenna radiation component and antenna system Technical field

The present invention relates to the field of communication technology, in particular to an antenna radiation component and an antenna system.

Background technique

Mobile communication is playing an increasingly important role in people's daily life. With the continuous increase of various mobile communication services and types, the deployment of mobile networks is gradually expanding in depth and breadth. As the radiation system in the base station equipment, the antenna is very important to the overall base station structure design and performance requirements. With the increase in network strength, especially the 4G\5G antennas for large-scale array antenna modes, the requirements for light weight, easy production, and good consistency of the antenna are becoming more and more urgent. At present, the commonly used radiating elements are die-casting metal vibrators, PCB vibrators and microstrip patch vibrators, etc., which require a large number of soldering and feeder processes, especially for large-scale array units, with many solder joints. In addition, the size of the antenna is small Due to the requirements, the array spacing becomes smaller and the unit mutual coupling is enhanced. A large number of spacers are required to increase the isolation in the horizontal and vertical directions. The spacers and the feed network board are generally assembled by welding, and the production process is cumbersome. It can be seen that there are a lot of welding problems in the assembly and production of antennas, and some performance indicators are often abnormal due to poor welding consistency.

Therefore, it is necessary to provide a lightweight and integrated antenna radiation component and antenna system.

technical problem

One of the objectives of the present invention is to provide an antenna radiating component to solve the problem of a large number of welding in the assembly and production of the existing antenna radiating component, and some performance indicators are abnormal due to poor welding consistency.

Technical solutions

The technical solution of the present invention is as follows: an antenna radiation assembly, including an integrally formed isolation frame, a circuit board detachably mounted on the isolation frame, at least two radiating units detachably mounted on the circuit board at intervals, and several An isolation plate is arranged between the adjacent radiation units, and the isolation plate is detachably installed on the isolation frame.

Further, the radiation unit includes a radiation sheet and a bracket for supporting the radiation sheet, the radiation sheet is provided with a first hole, the circuit board is provided with a second hole, and the radiation sheet passes through the first hole. The clamping hole is installed at one end of the bracket, and the other end of the bracket is inserted into the second clamping hole so that the bracket is installed on the circuit board.

Further, the bracket includes a cylinder, a top buckle fixed to the cylinder and longitudinally passing through the inner cavity of the cylinder, and at least three supporting feet arranged on the outer circumference of the cylinder at intervals. The feet extend from the outer circumference of the cylinder body toward the circuit board and gradually away from the cylinder body, and one end of the supporting leg away from the cylinder body is provided with a bottom end buckle; the top buckle penetrates the The first snap hole, the bottom end snaps through the second snap hole. ...

Further, the circuit board includes an upper surface and a lower surface arranged opposite to each other, the radiating unit is arranged on one side of the upper surface, the isolation frame includes a bottom wall and a surrounding wall surrounding the bottom wall, The bottom wall includes a plurality of alternately arranged grooves and hollows, the circuit board is provided on the bottom wall, and the lower surface and the grooves form a plurality of cavities, and each of the radiation units is connected to one The cavity is arranged directly opposite, and the orthographic projection of the radiation unit on the upper surface is located in the orthographic projection of the cavity on the upper surface.

Further, the bottom wall is provided with a mounting hole, the circuit board is provided with a first perforation adapted to the mounting hole, and a screw or rivet is used to fix the circuit board to the first perforation and the mounting hole. The bottom wall.

Further, the bottom wall is provided with a positioning pin protruding toward a side of the circuit board, and the circuit board is pre-positioned by the positioning pin.

Further, the bottom wall further includes a reinforcing rib penetrating through the hollow, and the reinforcing rib is provided with the mounting hole and/or the positioning pin.

Further, the groove includes a first groove side wall adjacent to the hollow, the first groove side wall is provided with a side wall buckle facing the hollow side, and the circuit board is provided with a second perforation The isolating plate includes an isolating portion and a fixing portion, the isolating portion is provided on one side of the upper surface, the fixing portion is provided on the side of the lower surface through the second perforation, and the fixing portion is provided with There is a third hole, and the side wall is buckled through the third hole.

Further, the isolation frame is rectangular, the grooves and the hollows are alternately arranged along the length direction of the isolation frame, and the surrounding wall includes a first surrounding side wall and a second surrounding side adjacent to the hollow The wall, the first surrounding side wall and the second surrounding side wall are provided with a first guide groove facing the hollow side, and the isolation part is inserted into the first guide groove.

Further, the side wall of the first groove is provided with a second guide groove on one side of the side wall buckle, and the fixing part is clamped in the second guide groove.

The present invention also provides an antenna system including the above-mentioned antenna radiation component.

Beneficial effect

The beneficial effect of the present invention is that by detachably installing the radiation unit on the circuit board, the circuit board and the isolation board are detachably installed on the isolation frame, so that the antenna radiating component can be assembled in a detachable manner, avoiding a large number of welding processes in assembly production. . Therefore, the antenna radiating component provided by the present invention does not involve a welding process in the assembly and production process, simplifies the production process, avoids the occurrence of abnormal partial performance indicators due to poor welding consistency, and improves the stability of the overall performance of the antenna radiating component.

Description of the drawings

FIG. 1 is a schematic structural diagram of an antenna radiation component provided by an embodiment of the present invention;

Figure 2 is an exploded view of an antenna radiation component provided by an embodiment of the present invention;

Figure 3 is a partial enlarged view at B in Figure 2;

4 is a schematic structural diagram of a bracket provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an isolation frame provided by an embodiment of the present invention;

Fig. 6 is a partial enlarged view of C in Fig. 5;

Figure 7 is a cross-sectional view along the line A-A in Figure 1;

Fig. 8 is a partial enlarged view at D in Fig. 7.

In the figure: 100, antenna radiation component; 1. isolation frame; 11, bottom wall; 111, mounting hole; 112, positioning pin; 12, surrounding wall; 121, first surrounding side wall; 122, second surrounding side wall; 123. First guide groove; 13. Groove; 131. Side wall of the first groove; 14. Hollow out; 15. Reinforcing rib; 16. Side wall buckle; 17. Second guide groove; 18. Slot fixing plate; 2. 21, second card hole; 22, upper surface; 23, lower surface; 24, first perforation; 25, second perforation; 3. radiating unit; 31, radiation sheet; 311, first card hole; 32. Bracket; 321. Cylinder body; 322. Top buckle; 323. Support foot; 324. Bottom buckle; 4. Isolation plate; 41. Isolation part; 42, fixed part; 421. The third hole; 5 , Cavity; 6. Rivets.

Embodiments of the present invention

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 8.

1 to 8, an embodiment of the present invention provides an antenna radiation assembly 100, including an integrally formed isolation frame 1, a circuit board detachably mounted on the isolation frame 1, at least two detachably mounted on the circuit board at intervals 2 radiating unit 3 and a plurality of isolation plates 4 arranged between adjacent radiating units 3, the isolation plate 4 is detachably installed in the isolation frame 1. By detachably installing the radiating unit 3 on the circuit board 2, and detachably installing the circuit board 2 and the isolation board 4 on the isolation frame 1, the antenna radiating component 100 can be assembled in a detachable manner, avoiding a large number of welding processes in assembly production. Therefore, the antenna radiating component 100 provided by the embodiment of the present invention does not involve a welding process during the assembly and production process, simplifies the production process, while avoiding the occurrence of some abnormal performance indicators due to poor welding consistency, and improves the overall performance of the antenna radiating component 100 The stability.

Preferably, the radiation unit 3 includes a radiation plate 31 and a bracket 32 for supporting the radiation plate 31. The radiation plate 31 is provided with a first card hole 311, the circuit board 2 is provided with a second card hole 21, and the radiation plate 31 passes through the first card. The hole 311 is installed at one end of the bracket 32, and the other end of the bracket 32 is inserted into the second hole 21 so that the bracket 32 is installed on the circuit board 2. Specifically, the bracket 32 includes a cylindrical body 321, a top buckle 322 fixed to the cylindrical body 321 and longitudinally passing through the inner cavity of the cylindrical body 321, and four supporting feet 323 evenly spaced around the outer circumference of the cylindrical body 321. The supporting feet 323 Extending from the outer circumference of the cylinder body 321 toward the circuit board 2 and gradually away from the cylinder body 321, the supporting leg 323 is provided with a bottom end buckle 324 at one end away from the cylinder body 321; The buckle 324 penetrates through the second hole 21. The radiation element 31 and the bracket 32 are assembled into the radiation unit 3 by the cooperation of the top buckle 322 and the first clamping hole 311, and then the radiation unit 3 is detachably assembled to the circuit by the cooperation of the bottom buckle 324 and the second clamping hole 21 On the board 2, the whole process does not involve the welding process, so as to avoid the occurrence of some abnormal performance indicators due to poor welding consistency. In this embodiment, the radiation sheet 31 is a circular parasitic patch, and the parasitic patch uses a thin metal plate, such as aluminum plate, stainless steel plate, or nickel silver. In addition, the shape of the parasitic patch is not limited, and it can also be square, Polygons and so on. Understandably, the number of supporting feet 323 and whether the supporting feet 323 are evenly spaced on the outer circumference of the cylinder 321 are not limited by this embodiment, as long as they can support the radiator 31 in a balanced and stable manner, for example, three supporting feet 323 are provided. , It is also possible that the connection is in an isosceles triangle.

Preferably, the bracket 32 is integrally formed by plastic injection molding. Understandably, the various parts of the bracket 32 can also be produced separately and then assembled together.

Referring to Figures 5, 7 and 8, the circuit board 2 includes an upper surface 22 and a lower surface 23 opposite to each other. The radiating unit 3 is provided on the side of the upper surface 22. The isolation frame 1 includes a bottom wall 11 and is surrounded on the bottom. The surrounding wall 12 of the wall 11, the bottom wall 11 includes a plurality of alternately arranged grooves 13 and hollows 14, the circuit board 2 is arranged on the bottom wall 11, and the lower surface 23 and the grooves 13 form a plurality of cavities 5, each radiating unit 3 and a cavity 5 are arranged directly opposite to each other, and the orthographic projection of the radiation unit 3 on the upper surface 22 is located in the orthographic projection of the cavity 5 on the upper surface 22. By providing the hollow 14 not only the distance between the adjacent radiating elements 3 is enlarged and the mutual coupling between the radiating elements 3 is reduced, but the weight of the isolation frame 1 is also reduced, so as to meet the development requirements of lightweight antennas. The radiating unit 3 and the cavity 5 are arranged in direct alignment, in order to ensure that the antenna system including the antenna radiating component 100 provided by the present invention has a sufficiently large headroom, try to avoid other components from interfering with the radiating unit 3 and reduce the dielectric constant , Improve antenna performance. The surrounding wall 12 of the isolation frame 1 can isolate the radiation units 3 of the adjacent antenna radiation components 100 to avoid mutual coupling between each other.

Preferably, the number of the radiation unit 3 and the cavity 5 are the same. By setting in this way, the space of the isolation frame 1 is used as much as possible to install enough radiating units 3 to improve the performance of the antenna radiating assembly 100.

Please continue to refer to Figures 5 and 7, the bottom wall 11 is provided with a mounting hole 111, the circuit board 2 is provided with a first perforation 24 that matches the mounting hole 111, and the screw or rivet 6 passes through the first perforation 24 and the mounting hole 111. The circuit board 2 is fixed to the bottom wall 11. Among them, the material of the screw or rivet 6 is preferably a plastic material. In this embodiment, the bottom wall 11 is also provided with positioning pins 112 on the side facing the circuit board 2. The circuit board 2 is first pre-positioned by the positioning pins 112, and then further strengthened and fixed by the rivets 6, so the circuit board 2 can be stably Fixed to the isolation frame 1. In another embodiment, the length of the screw or rivet 6 can be lengthened to fix the entire antenna radiation component 100 to other components of the antenna system, which facilitates the assembly of the antenna system.

Preferably, the bottom wall 11 further includes a reinforcing rib 15 penetrating through the hollow 14, and the reinforcing rib 15 is provided with a mounting hole 111 and/or a positioning pin 112. Reinforcing ribs 15 are provided to enhance the supporting strength of the isolation frame 1.

Referring to FIGS. 3, 5 and 6, the groove 13 includes a first groove side wall 131 adjacent to the hollow 14. The first groove side wall 131 is provided with a side wall buckle 16 on the side facing the hollow 14, and the circuit board 2 A second perforation 25 is provided. The isolating plate 4 includes an isolating portion 41 and a fixing portion 42. The isolating portion 41 is provided on the side of the upper surface 22. The fixing portion 42 passes through the second perforation 25 and is provided on the side of the lower surface 23. The fixing portion 42 There is a third hole 421, and the side wall buckle 16 penetrates through the third hole 421. Among them, the isolation board 4 is a PCB board. The isolation frame 1 is rectangular, and the grooves 13 and the hollows 14 are alternately arranged along the length direction of the isolation frame 1. The surrounding wall 12 includes a first surrounding side wall 121 and a second surrounding side wall 122 adjacent to the hollow 14. The first surrounding side wall The side wall 121 and the second surrounding side wall 122 facing the hollow 14 are provided with a first guide groove 123, and the isolation portion 41 is inserted into the first guide groove 123. The side wall 131 of the first groove is provided with a second guide groove 17 on one side of the side wall buckle 16, and the fixing portion 42 is clamped in the second guide groove 17. Specifically, the side wall 131 of the first groove is protrudingly provided with two oppositely arranged groove fixing plates 18 on the side facing the hollow 14, and the opposite side of the two groove fixing plates 18 is provided with a second guide groove 17 directly opposite to the side wall. The buckle 16 is disposed between the two groove fixing plates 18 and the first groove side wall 131 and fits into the third hole 421. By setting in this way, the isolation plate 4 can be detachably installed on the isolation frame 1 without involving the welding process, and avoiding the occurrence of some abnormal performance indicators due to poor welding consistency. By providing the guide groove, the isolation plate 4 slides along the guide groove toward the bottom wall 11 of the isolation frame 1 to facilitate installation on the isolation frame 1. In this embodiment, two opposite first groove side walls 131 of adjacent grooves 13 are provided with side wall buckles 16, that is, two isolation plates 4 can be arranged between two adjacent grooves 13 In other words, two isolation plates 4 are provided between two adjacent radiating units 3 to better shield the mutual coupling between the radiating units 3. It is understandable that the third card hole 421 and the second wire groove may also be provided on the side of the first groove side wall 131 facing away from the hollow 14, or on the reinforcing rib 15.

The isolation frame 1 is integrally formed by plastic injection molding. Specifically, after plastic injection molding, the bracket 32 is subjected to surface metallization treatment through processes such as electroplating and vacuum plating.

An embodiment of the present invention also provides an antenna system, including the above-mentioned antenna radiation component 100.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims (11)

1. An antenna radiation component, which is characterized by comprising an integrated isolation frame, a circuit board detachably mounted on the isolation frame, at least two radiating units detachably mounted on the circuit board at intervals, and a plurality of Adjacent to the isolation board between the radiation units, the isolation board is detachably mounted on the isolation frame.
2. The antenna radiating component according to claim 1, wherein the radiating unit comprises a radiating sheet and a bracket for supporting the radiating sheet, the radiating sheet is provided with a first clamping hole, and the circuit board is provided with The second clamping hole, the radiating sheet is installed on one end of the bracket through the first clamping hole, and the other end of the bracket is inserted into the second clamping hole so that the bracket is installed on the circuit board.
3. The antenna radiation assembly according to claim 2, wherein the bracket comprises a cylinder, a top buckle fixed on the cylinder and longitudinally passing through the inner cavity of the cylinder, and a spacer ring arranged on the cylinder. At least three supporting feet on the outer circumference of the body, the supporting feet extend from the outer circumference of the cylinder toward the circuit board and gradually away from the cylinder body, and one end of the supporting feet away from the cylinder body is provided with a bottom end clip Buckle; The top buckle is pierced in the first hole, and the bottom buckle is pierced in the second hole.
4. The antenna radiating component according to claim 1, wherein the circuit board includes an upper surface and a lower surface disposed opposite to each other, the radiating unit is disposed on one side of the upper surface, and the isolation frame includes a bottom wall And a surrounding wall surrounding the bottom wall, the bottom wall including a plurality of alternately arranged grooves and hollows, the circuit board is disposed on the bottom wall, and the lower surface and the grooves form several Cavities, each of the radiation units and one of the cavities are arranged directly opposite, and the orthographic projection of the radiating unit on the upper surface is located in the orthographic projection of the cavity on the upper surface.
5. The antenna radiating component according to claim 4, wherein the bottom wall is provided with a mounting hole, the circuit board is provided with a first through hole adapted to the mounting hole, and a screw or rivet passes through the first through hole. And the mounting hole fixes the circuit board to the bottom wall.
6. The antenna radiation component according to claim 5, wherein the bottom wall is provided with a positioning pin protruding toward a side of the circuit board, and the circuit board is pre-positioned by the positioning pin.
7. 7. The antenna radiation component according to claim 6, wherein the bottom wall further comprises a reinforcing rib penetrating through the hollow, and the reinforcing rib is provided with the mounting hole and/or the positioning pin.
8. The antenna radiation component according to claim 4, wherein the groove comprises a first groove side wall adjacent to the hollow, and the first groove side wall is provided with a side wall facing the hollow side A buckle, the circuit board is provided with a second perforation, the isolation board includes an isolation portion and a fixing portion, the isolation portion is provided on one side of the upper surface, and the fixing portion passes through the second perforation and is provided at On one side of the lower surface, the fixing portion is provided with a third hole, and the side wall is buckled through the third hole.
9. The antenna radiating component according to claim 8, wherein the isolation frame is rectangular, the grooves and the hollows are alternately arranged along the length direction of the isolation frame, and the surrounding wall includes the same shape as the hollows. Adjacent first and second surrounding side walls, the first surrounding side wall and the second surrounding side wall are provided with a first guide groove facing the hollow side, and the isolation part is inserted于The first guide groove.
10. The antenna radiation assembly according to claim 9, wherein the side wall of the first groove is provided with a second guide groove on one side of the side wall buckle, and the fixing part is locked on the second guide groove. The guide groove.
11. The antenna system is characterized by comprising the antenna radiation component according to any one of claims 1 to 10.