CN214203974U

CN214203974U - Multi-port base station antenna

Info

Publication number: CN214203974U
Application number: CN202120004511.6U
Authority: CN
Inventors: 陈文合; 杨萍萍; 熊兰; 樊宏亮; 刘小芳; 薛建军
Original assignee: Shenzhen Grentech Corp ltd
Current assignee: Shenzhen Grentech Corp ltd
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-09-14
Anticipated expiration: 2031-01-04

Abstract

The utility model provides a multiport base station antenna, which comprises a reflecting plate and a plurality of radiation array elements arranged on the front surface of the reflecting plate, wherein the longitudinal two sides of the reflecting plate are respectively bent towards the front surface of the reflecting plate to form two vertical flanges, and the multiport base station antenna also comprises a shielding plate arranged on the back surface of the reflecting plate; the shielding plate is U-shaped and comprises a horizontal part and two vertical parts formed on two longitudinal sides of the horizontal part, the two vertical parts are respectively positioned on the outer sides of the two vertical flanges and are respectively installed on the two vertical flanges, and the horizontal part is positioned above the back surface of the reflecting plate and forms a space with the back surface of the reflecting plate. The utility model provides a multiport base station antenna, the performance is better, can satisfy the antenna performance index requirement.

Description

Multi-port base station antenna

[ technical field ] A method for producing a semiconductor device

The utility model relates to a mobile communication field, concretely relates to multiport base station antenna.

[ background of the invention ]

In the conventional multi-port base station antenna, mutual coupling between radiation array elements on the front surface of a reflector is severe, thereby causing antenna performance degradation, such as: the gain is reduced, the isolation is poor, the standing-wave ratio is increased, the directional diagram is deformed, the three-order intermodulation is unstable, and the like, so that the requirement of the antenna performance index cannot be met.

[ Utility model ] content

A primary object of the present invention is to provide a multiport base station antenna, which has better performance and can satisfy the requirement of antenna performance index.

In order to achieve the above object, the present invention provides a multi-port base station antenna, including a reflector and a plurality of radiation array elements disposed on the front surface of the reflector, wherein two longitudinal sides of the reflector are respectively bent toward the front surface of the reflector to form two vertical flanges, and further including a shielding plate disposed on the back surface of the reflector; the shielding plate is U-shaped and comprises a horizontal part and two vertical parts formed on two longitudinal sides of the horizontal part, the two vertical parts are respectively positioned on the outer sides of the two vertical flanges and are respectively installed on the two vertical flanges, and the horizontal part is positioned above the back surface of the reflecting plate and forms a space with the back surface of the reflecting plate.

Preferably, the vertical portion is mounted to the corresponding vertical flange by a riveting structure.

According to a preferable technical scheme, the riveting structure comprises a first riveting hole position, a second riveting hole position and a riveting piece, wherein the first riveting hole position is arranged on one of the vertical part and the corresponding vertical flanging, the second riveting hole position is arranged on the other one of the vertical part and the corresponding vertical flanging, and the riveting piece is riveted in the first riveting hole position and the second riveting hole position.

As a preferred technical scheme, the riveting piece is an R-shaped rivet.

As a preferred technical solution, the number of the first riveting hole site and the second riveting hole site is plural.

Preferably, the horizontal portion is provided with a plurality of horizontal portions, and the horizontal portions are arranged on the horizontal sides of the rear surface of the reflection plate.

As a preferred technical solution, the supporting structure includes two metal supporting pieces, and the two metal supporting pieces are arranged side by side along the transverse direction of the reflecting plate; one end of the metal support is arranged on the back surface of the reflecting plate, and the other end of the metal support is abutted to the horizontal part so as to support the horizontal part.

As preferred technical scheme, metal support includes first support column and arrives along circumference evenly distributed a plurality of second support columns of first support column periphery, the one end setting of first support column, a plurality of second support columns is arrived the back of reflecting plate, the other end butt arrives the horizontal part.

Preferably, the horizontal part and the two vertical parts are respectively provided with a rounded corner at the joint.

As a preferred technical scheme, the shielding plate is an aluminum foil mylar piece, and the thickness of the aluminum foil mylar piece is 0.4-0.6 mm.

The utility model discloses a shield plate that sets up can reduce the cross coupling nature between the radiation array element to can improve the performance of antenna, if gain improvement, isolation become good, the standing-wave ratio diminishes, directional diagram non-deformable, three-order intermodulation is stable etc. have satisfied the antenna performance index requirement.

[ description of the drawings ]

To further disclose the specific technical content of the present disclosure, please refer to the attached drawings, wherein:

fig. 1 is a schematic structural diagram of a multi-port base station antenna according to an embodiment of the present invention;

fig. 2 is an exploded view of the multi-port base station antenna of fig. 1.

Description of the symbols:

vertical flange 12 of reflector plate 10

Horizontal part 32 of shield plate 30

The vertical portion 34 of the exit hole location 322

Chamfer 36

First rivet hole site 52 and second rivet hole site 54

Riveting member 56

Metal support 70 first support post 72

Second support column 74

[ detailed description ] embodiments

Referring to fig. 1 and 2, the present embodiment provides a multi-port base station antenna, which includes a reflector 10, a plurality of radiating elements (not shown) disposed on a front surface of the reflector 10, and a shielding plate 30 disposed on a back surface of the reflector 10.

Two vertical flanges 12 are formed by bending the two longitudinal sides of the reflector 10 toward the front surface of the reflector 10. The shield plate 30 is U-shaped, and includes a horizontal portion 32 and two vertical portions 34 formed on both longitudinal sides of the horizontal portion 32. The two vertical portions 34 are respectively located outside the two vertical flanges 12 and are respectively mounted to the two vertical flanges 12, and the horizontal portion 32 is located above the back surface of the reflection plate 10 and forms a space with the back surface of the reflection plate 10, and the space is convenient for the power feeding network and the like to be mounted to the back surface of the reflection plate 10. The shielding plate 30 can reduce the mutual coupling between the radiation array elements, thereby improving the performance of the antenna, such as improved gain, better isolation, reduced standing-wave ratio, difficult deformation of a directional diagram, stable three-order intermodulation and the like, and meeting the performance index requirement of the antenna.

The shielding plate 30 is an aluminum foil mylar piece, which has good shielding effect and light weight, and reduces the weight and cost of the antenna. The aluminum foil mylar has a thickness of 0.4-0.6 mm, preferably 0.5 mm.

Fillets 36 are respectively arranged at the joints between the horizontal part 32 and the two vertical parts 34, and the antenna housing is convenient to mount.

An avoidance hole 322 (see fig. 2), preferably a screw hole, is provided at one lateral side of the horizontal portion 32, and is used as a hole avoiding the mounting of the radome.

The horizontal portion 32 has a length and a width corresponding to those of the reflection plate 10.

The vertical portion 34 is mounted to the corresponding vertical flange 12 by a rivet structure. Specifically, the rivet structure includes a first rivet hole site 52 (see fig. 2), a second rivet hole site 54 (see fig. 2), and a rivet 56. The vertical portion 34 is provided with a first rivet hole site 52, the vertical flange 12 corresponding to the vertical portion 34 is provided with a second rivet hole site 54, and the rivet 56 is riveted in the first rivet hole site 52 and the second rivet hole site 54, thereby achieving the installation of the vertical portion 34 to the corresponding vertical flange 12.

In other embodiments, the vertical portion 34 is provided with the second rivet hole site 54, the vertical flange 12 corresponding to the vertical portion 34 is provided with the first rivet hole site 52, and the rivet 56 is riveted in the first rivet hole site 52 and the second rivet hole site 54, so that the vertical portion 34 can be mounted to the corresponding vertical flange 12 as well.

Preferably, rivet 56 is an R-shaped rivet. It is understood that rivet 56 may be other types of rivets.

In the present embodiment, the number of the first rivet hole sites 52 and the number of the second rivet hole sites 54 are plural. The plurality of first rivet hole sites 52 are sequentially arranged at intervals in the longitudinal direction of the vertical portion 34. The plurality of second rivet holes 54 are sequentially arranged at intervals in the longitudinal direction of the vertical flange 12.

The reflecting plate 10 is provided at both lateral sides of the rear surface thereof with support structures to support the horizontal portion 32, respectively. The support structure comprises two metal supports 70. The two metal supporters 70 are arranged side by side in a lateral direction of the reflection plate 10. Two metal supporters 70 are respectively adjacent to both longitudinal sides of the reflection plate 10. One end of the metal supporter 70 is provided to the back surface of the reflection plate 10, and the other end is abutted to the horizontal portion 32 to achieve the support of the horizontal portion 32.

Specifically, as shown in fig. 2, the metal support 70 includes a first support column 72 and a plurality of second support columns 74 uniformly distributed on the periphery of the first support column 72 along the circumferential direction, one end of the first support column 72 and one end of the plurality of second support columns 74 are disposed on the back surface of the reflection plate 10, and the other end is abutted to the horizontal portion 32.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A multi-port base station antenna comprises a reflecting plate and a plurality of radiation array elements arranged on the front surface of the reflecting plate, wherein two longitudinal sides of the reflecting plate are respectively bent towards the front surface of the reflecting plate to form two vertical flanges; the shielding plate is U-shaped and comprises a horizontal part and two vertical parts formed on two longitudinal sides of the horizontal part, the two vertical parts are respectively positioned on the outer sides of the two vertical flanges and are respectively installed on the two vertical flanges, and the horizontal part is positioned above the back surface of the reflecting plate and forms a space with the back surface of the reflecting plate.

2. The multi-port base station antenna of claim 1, wherein the vertical portion is mounted to the corresponding vertical flange by a riveted structure.

3. The multi-port base station antenna of claim 2, wherein the riveted structure includes a first rivet hole site, a second rivet hole site, and a rivet, one of the vertical portion and the corresponding vertical flange is provided with the first rivet hole site, the other is provided with the second rivet hole site, and the rivet is riveted in the first rivet hole site and the second rivet hole site.

4. The multi-port base station antenna of claim 3, wherein the rivet is an R-shaped rivet.

5. The multi-port base station antenna of claim 3, wherein the first and second rivet hole sites are respectively plural in number.

6. The multi-port base station antenna as claimed in claim 1, wherein the reflecting plate is provided at both lateral sides of the rear surface thereof with support structures to support the horizontal portion, respectively.

7. The multi-port base station antenna of claim 6, wherein the support structure comprises two metal supports arranged side by side in a lateral direction of the reflector plate; one end of the metal support is arranged on the back surface of the reflecting plate, and the other end of the metal support is abutted to the horizontal part so as to support the horizontal part.

8. The multi-port base station antenna according to claim 7, wherein the metal support comprises a first support column and a plurality of second support columns uniformly distributed around the circumference of the first support column, one end of the first support column and one end of the plurality of second support columns are disposed on the back surface of the reflection plate, and the other end of the first support column and the other end of the plurality of second support columns are abutted to the horizontal portion.

9. The multi-port base station antenna of claim 1, wherein the horizontal portion and the two vertical portions are each rounded at a junction therebetween.

10. The multi-port base station antenna of claim 1, wherein the shield is an aluminum foil mylar having a thickness of 0.4-0.6 mm.