CN115621710A

CN115621710A - Antenna with a shield

Info

Publication number: CN115621710A
Application number: CN202110796456.3A
Authority: CN
Inventors: 吕鹏飞; 刘明星; 朱晖
Original assignee: Wuhan Fingu Electronic Technology Co Ltd
Current assignee: Wuhan Fingu Electronic Technology Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2023-01-17

Abstract

The present application provides an antenna. The antenna comprises a main body structure, a first antenna and a second antenna, wherein the main body structure is provided with a first surface and is made of plastic, and the main body structure is an integrally formed structure; a radiation unit plated on the first surface; the power dividing unit is plated on the first surface and electrically connected with the radiation unit, and feeds electricity to the radiation unit. The radiation unit and the power dividing unit can be electroplated without a PCB, so that the cost is saved. The whole structure is simple, the number of components is reduced, the process is simple, and a large amount of time cost is saved. And all parts of the antenna are assembled together without manpower, thereby avoiding the error of manual operation and reducing the defective rate.

Description

Antenna with a shield

Technical Field

The application relates to the field of antennas, in particular to an antenna.

Background

In the prior art, when an antenna is manufactured, a radiation sheet needs to be etched on a PCB, a plastic supporting structure is additionally arranged on the PCB, a guide sheet is arranged on the plastic supporting structure, a filtering structure needs to be manufactured separately, and finally the PCB, the plastic supporting structure, the guide sheet and the filtering structure are assembled together to form the antenna. The PCB is expensive, the entire antenna structure is complicated, and the assembly of the antenna requires a lot of man-hours.

Disclosure of Invention

The main objective of the present application is to provide an antenna to solve the problems of high cost and complex overall antenna structure in the prior art.

In order to achieve the above object, according to one aspect of the present application, there is provided an antenna including: the main body structure (10) is provided with a first surface (11), the main body structure (10) is made of plastic, and the main body structure (10) is of an integrally formed structure; a radiating element (20), said radiating element (20) being plated on said first surface (11); the power dividing unit (30) is electroplated on the first surface (11), the power dividing unit (30) is electrically connected with the radiation unit (20), and the power dividing unit (30) feeds power to the radiation unit (20).

Further, the main body structure (10) comprises a support (12), the support (12) is located on the first surface (11), the antenna further comprises a guiding sheet (40), the guiding sheet is located on the support, and the guiding sheet (40) is arranged opposite to the radiation unit (20) in a spaced mode.

Further, the distance between the guide sheet (40) and the radiation unit (20) is determined by the material of the guide sheet (40), the size of the guide sheet (40), the material of the radiation unit (20) and the size of the radiation unit (20).

Further, the main body structure (10) includes a protrusion structure (13), a first hole (130) is formed through the center of the protrusion structure (13), a metal column is embedded in the first hole (130), an electrical signal is input from the metal column, a first end of the power dividing unit (30) is electrically connected to the metal column, and a second end of the power dividing unit (30) is electrically connected to the radiation unit (20).

Furthermore, the number of the protruding structures (13) is two, which are a first protruding structure (13) and a second protruding structure (13) respectively, the number of the metal columns is two, which is a first metal column and a second metal column respectively, the power dividing unit (30) includes a first power dividing line and a second power dividing line, a first end of the first power dividing line is electrically connected to the first metal column, a second end of the first power dividing line is electrically connected to the power dividing unit (30) to realize a radiation feed structure of positive 45 degrees, a first end of the second power dividing line is electrically connected to the second metal column, and a second end of the second power dividing line is electrically connected to the power dividing unit (30) to realize a radiation feed structure of negative 45 degrees.

Further, the radiation unit (20) is shaped as a square with two chamfers, the two chamfers are adjacent to each other, the second end of the first power dividing line is electrically connected to the first right angle of the square to realize positive 45 ° radiation, and the second end of the second power dividing line is electrically connected to the second right angle of the square to realize negative 45 ° radiation.

Further, the antenna also comprises a reflecting metal plate (50), and the reflecting metal plate (50) is embedded in the main body structure (10).

Further, the body structure (10) comprises a filter cavity (14), the filter cavity (14) being located at a side of the reflective metal plate (50) facing away from the first surface (11).

Further, the antenna further comprises a filter structure (15), the filter structure (15) being located on the filter cavity (14).

Furthermore, a plurality of grooves (140) are formed in the filter cavity (14), the filter structure (15) comprises a cover plate (150), a plurality of resonators (151) and a plurality of tuning screws (152), a plurality of second holes (1500) are formed in the cover plate (150), and the filter structure (15) is mounted on the filter cavity (14) through the resonators (151).

According to the technical scheme, the main body structure is formed by injection molding through an injection molding machine, then the radiation unit and the power dividing unit are electroplated on the first surface of the main body structure, and the power dividing unit feeds power to the radiation unit so as to achieve antenna radiation. The radiation unit and the power dividing unit can be electroplated without a PCB, so that the cost is saved. And because the main structure is an integrated structure, the antenna can be assembled only by electroplating the radiation unit and the power dividing unit on the main structure, the whole structure is simple, the components are reduced, the process is simple, and a large amount of time cost is saved. And all parts of the antenna are assembled together without manpower, thereby avoiding the error of manual operation and reducing the defective rate.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

fig. 1 shows an overall structural schematic diagram of an antenna according to an embodiment of the present application;

fig. 2 shows a schematic view of a partial structure of an antenna according to an embodiment of the application;

FIG. 3 shows a schematic view of an assembled antenna according to an embodiment of the application;

FIG. 4 shows a top view of an assembled antenna according to an embodiment of the present application;

fig. 5 shows a cross-sectional view of an assembled antenna according to an embodiment of the application.

Wherein the figures include the following reference numerals:

10. a body structure; 11. a first surface; 12. a support member; 13. a raised structure; 130. a first hole; 14. a filter cavity; 140. a groove; 15. a filtering structure; 150. a cover plate; 1500. a second hole; 151. a resonator; 152. a tuning screw; 20. a radiation unit; 30. a power division unit; 40. a guide sheet; 50. a reflective metal plate.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.

As described in the background art, the cost of manufacturing an antenna is high and the overall antenna structure is complex in the prior art, and the problem that the cost of manufacturing an antenna is high and the overall antenna structure is complex in the prior art is solved. Embodiments of the present application provide an antenna.

An exemplary embodiment of the present application provides an antenna, as shown in fig. 1 and 3, including:

a main body structure 10 having a first surface 11, wherein the main body structure 10 is made of plastic, and the main body structure 10 is an integrally molded structure;

a radiation unit 20, said radiation unit 20 being plated on said first surface 11;

and a power dividing unit 30, the power dividing unit 30 being plated on the first surface 11, the power dividing unit 30 being electrically connected to the radiation unit 20, and the power dividing unit 30 feeding the radiation unit 20.

In the scheme, the injection molding machine is used for injection molding of the main body structure, then the radiation unit and the power dividing unit are plated on the first surface of the main body structure, and the power dividing unit feeds power for the radiation unit so as to realize antenna radiation. The radiation unit and the power dividing unit can be electroplated without a PCB, so that the cost is saved. And because the main structure is an integrated structure, the antenna can be assembled only by electroplating the radiation unit and the power dividing unit on the main structure, the whole structure is simple, the components are reduced, the process is simple, and a large amount of time cost is saved. And all parts of the antenna are assembled together without manpower, thereby avoiding the error of manual operation and reducing the defective rate.

In one embodiment of the present application, as shown in fig. 1, the main body structure 10 includes a supporting member 12, the supporting member 12 is located on the first surface 11, the antenna further includes a guiding sheet 40, the guiding sheet 40 is located on the supporting member 12, and the guiding sheet 40 is spaced apart from the radiating element 20. The guide sheet 40 is spaced apart from the radiation unit 20, so that the radiation capability of the antenna is enhanced and the gain is increased. The support member 12 has a projection, and the guide piece has a hole therethrough, and the projection is passed through the hole of the guide piece to fix the guide piece to the support member.

In one embodiment of the present invention, as shown in fig. 1, the distance between the guide sheet 40 and the radiation unit 20 is determined by the material of the guide sheet 40, the size of the guide sheet 40, the material of the radiation unit 20, and the size of the radiation unit 20. The material of the guiding sheet 40 and the radiation unit 20 is metal, the size and specific material of the guiding sheet 40 and the radiation unit 20 can be set according to actual requirements, and after the size and specific material of the guiding sheet 40 and the radiation unit 20 are determined, the distance between the guiding sheet 40 and the radiation unit 20 is determined. So as to realize better radiation effect and enable the gain to meet the requirement. In manufacturing, after the radiation unit 20 and the power dividing unit 30 are electroplated on the first surface 11, the guiding sheet 40 is fixed on the supporting member 12. I.e. the directing sheet 40 is a separately made structure.

In an embodiment of the present invention, as shown in fig. 1, 4 and 5, the main body structure 10 includes a protrusion structure 13, a first hole 130 is formed through a center of the protrusion structure 13, a metal pillar is embedded in the first hole 130, an electrical signal is input from the metal pillar, a first end of the power dividing unit 30 is electrically connected to the metal pillar, and a second end of the power dividing unit 30 is electrically connected to the radiation unit 20. That is, the electrical signal input from the metal pillar is transmitted to the power dividing unit 30, and the power dividing unit 30 feeds power to the radiating unit 20.

In an embodiment of the present application, as shown in fig. 1 and fig. 3 to fig. 5, the protruding structures 13 are two, which are respectively a first protruding structure and a second protruding structure, the metal pillars are two, which are respectively a first metal pillar and a second metal pillar, the power dividing unit 30 includes a first power dividing line and a second power dividing line, a first end of the first power dividing line is electrically connected to the first metal pillar, a second end of the first power dividing line is electrically connected to implement a positive 45 ° radiation feeding structure on the power dividing unit 30, a first end of the second power dividing line is electrically connected to the second metal pillar, and a second end of the second power dividing line is electrically connected to implement a negative 45 ° radiation feeding structure on the power dividing unit 30. By setting the trend of the first power dividing line, the trend of the second power dividing line and the corresponding design of the radiation sheet, the polarization of the antenna at positive 45 degrees and negative 45 degrees can be realized.

In an embodiment of the present application, as shown in fig. 1 and 3, the radiating unit 20 has a square shape with two chamfers, and the two chamfers are adjacent to each other, the second end of the first power dividing line is electrically connected to implement positive 45 ° radiation at a first right angle of the square, and the second end of the second power dividing line is electrically connected to implement negative 45 ° radiation at a second right angle of the square. The radiation requirements can be well met by arranging the shape of the radiation unit 20 to be square with two chamfers.

In an embodiment of the present application, as shown in fig. 1 and 2, the antenna further includes a reflective metal plate 50, and the reflective metal plate 50 is embedded inside the main body structure 10. The reflective metal plate 50 functions to reflect electromagnetic waves, so that the electromagnetic waves are radiated in one direction.

In an embodiment of the present application, as shown in fig. 1 and fig. 2, the main body structure 10 includes a filter cavity 14, and the filter cavity 14 is located on a side of the reflective metal plate 50 away from the first surface 11.

In an embodiment of the present application, as shown in fig. 1 and fig. 2, the antenna further includes a filter structure 15, the material of the filter structure 15 is metal or a medium with a metal plated surface, and the filter structure 15 is located on the filter cavity 14. The filter cavity 14 and the filter structure 15 together function to filter electrical signals. The inner wall of the filter cavity 14 is plated with metal.

In an embodiment of the present application, as shown in fig. 1 and fig. 2, the filter cavity 14 is formed with a plurality of grooves 140, the filter structure 15 includes a cover plate 150, a plurality of resonators 151 and a plurality of tuning screws 152, the cover plate 150 is formed with a plurality of second holes 1500, and the filter structure 15 is located on the filter cavity 14 through the resonators 151. The second hole 1500 is a threaded hole through which the tuning screw 152 passes, and the bottom of the resonator 151 has a hole through which the frequency of the electromagnetic field is adjusted by adjusting the depth of the tuning screw 152 in the hole at the bottom of the resonator 151. The protrusion on the resonator 151 is embedded in the recess of the filter cavity. The antenna of this application is makeed promptly, and the part that needs make alone only leads to piece, reflection metal sheet and filtering structure, and all the rest all are integrated into one piece, simple structure and assembly process are simple.

Examples

The present embodiment relates to a manufacturing process of an antenna. The method comprises the following steps:

step 1: manufacturing a reflecting metal plate;

step 2: placing the reflecting metal plate in a mould, and performing injection molding to form a main body structure;

and step 3: plating a radiation unit and a power dividing unit on the first surface of the main body structure;

and 4, step 4: manufacturing a filtering structure, and installing the filtering structure on a filter cavity;

and 5: the fabricated director sheet is mounted on a support to form an antenna as shown in fig. 3.

The antenna in the embodiment has the advantages of simple structure, convenience in assembly, no need of a PCB (printed circuit board), cost saving and better radiation capability.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

the antenna uses an injection molding machine to injection mold a main body structure, then the radiation unit and the power dividing unit are plated on the first surface of the main body structure, and the power dividing unit feeds power for the radiation unit so as to realize antenna radiation. The radiation unit and the power dividing unit can be electroplated without a PCB, so that the cost is saved. And because the main structure is an integrated structure, the antenna can be assembled only by electroplating the radiation unit and the power dividing unit on the main structure, the whole structure is simple, the components are reduced, the process is simple, and a large amount of time cost is saved. And all parts of the antenna are assembled together without manpower, thereby avoiding the error of manual operation and reducing the defective rate.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An antenna, comprising:

the main body structure (10) is provided with a first surface (11), the main body structure (10) is made of plastics, and the main body structure (10) is of an integrally formed structure;

a radiating element (20), said radiating element (20) being electroplated on said first surface (11);

the power dividing unit (30) is electroplated on the first surface (11), the power dividing unit (30) is electrically connected with the radiation unit (20), and the power dividing unit (30) feeds power to the radiation unit (20).

2. The antenna of claim 1, wherein the body structure (10) includes a support (12), the support (12) being located on the first surface (11), the antenna further comprising a director sheet (40) located on the support, the director sheet (40) being spaced opposite the radiating element (20).

3. The antenna according to claim 2, characterized in that the distance between the guiding sheet (40) and the radiating element (20) is determined by the material of the guiding sheet (40), the dimensions of the guiding sheet (40), the material of the radiating element (20) and the dimensions of the radiating element (20).

4. The antenna of claim 1, wherein the main body structure (10) comprises a protruding structure (13), a first hole (130) is formed through a center of the protruding structure (13), a metal pillar is embedded in the first hole (130), an electrical signal is input from the metal pillar, a first end of the power dividing unit (30) is electrically connected to the metal pillar, and a second end of the power dividing unit (30) is electrically connected to the radiating unit (20).

5. The antenna according to claim 4, wherein the protruding structures (13) are two, namely a first protruding structure (13) and a second protruding structure (13), the metal pillars are two, namely a first metal pillar and a second metal pillar, the power dividing unit (30) includes a first power dividing line and a second power dividing line, a first end of the first power dividing line is electrically connected to the first metal pillar, a second end of the first power dividing line is electrically connected to the power dividing unit (30) to implement a positive 45 ° radiation feed structure, a first end of the second power dividing line is electrically connected to the second metal pillar, and a second end of the second power dividing line is electrically connected to implement a negative 45 ° radiation feed structure on the power dividing unit (30).

6. The antenna according to claim 5, wherein the radiating element (20) has a square shape with two chamfers, and the two chamfers are adjacent to each other, and the second end of the first power dividing line is electrically connected to realize positive 45 ° radiation at a first right angle of the square shape, and the second end of the second power dividing line is electrically connected to realize negative 45 ° radiation at a second right angle of the square shape.

7. The antenna according to any of claims 1 to 6, characterized in that it further comprises a reflective metal plate (50), said reflective metal plate (50) being embedded inside said body structure (10).

8. An antenna according to claim 7, characterized in that the body structure (10) comprises a filter cavity (14), the filter cavity (14) being located at a side of the reflective metal plate (50) facing away from the first surface (11).

9. An antenna according to claim 8, characterized in that it further comprises a filter structure (15), said filter structure (15) being located on said filter cavity (14).

10. The antenna of claim 9, wherein the filter cavity (14) defines a plurality of slots (140), the filter structure (15) includes a cover plate (150), a plurality of resonators (151), and a plurality of tuning screws (152), the cover plate (150) defines a plurality of second holes (1500), and the filter structure (15) is mounted to the filter cavity (14) via the resonators (151).