WO2016029680A1

WO2016029680A1 - Dual-polarization vibrator

Info

Publication number: WO2016029680A1
Application number: PCT/CN2015/074286
Authority: WO
Inventors: 郭豫宁; 刘波; 陈�光
Original assignee: 罗森伯格技术（昆山）有限公司
Priority date: 2014-08-25
Filing date: 2015-03-16
Publication date: 2016-03-03
Also published as: CN104157972A

Abstract

Disclosed is a dual-polarization vibrator, which comprises vibrator radiating surfaces, a first printed circuit board and a metal supporting piece. The vibrator radiating surfaces are fixed to one end of the metal supporting piece. A gap is formed between every two adjacent vibrator radiating surfaces for feeding to form a dipole. The first printed circuit board is fixed to the vibrator radiating surfaces. A feeding network is formed on the first printed circuit board and comprises a first feeding circuit and a second feeding circuit, wherein a feeding bridge skips the first feeding circuit and the second feeding circuit in a crossed mode. The feeding network feeds to the feeding gaps through the first feeding circuit and the second feeding circuit. The first feeding circuit and the second feeding circuit are respectively provided with a feeder line connecting point that is connected to a feeder cable. By means of the present invention, the gap feeding mode is adopted, so an antenna is smaller in size and lower in height at a lower frequency band, the frequency bandwidth of the antenna is greatly expanded, and key performance indexes such as the standing-wave ratio, the isolation, the front-to-rear ratio and cross polarization of the antenna are improved.

Description

Double polarized oscillator

Technical field

The present invention relates to the field of communication technologies, and in particular, to a dual-polarized vibrator having a wider frequency band and a smaller size and a lower height in a lower frequency band.

Background technique

The base station antenna system is the most important component subsystem of the wireless communication network. With the development of data communication and multimedia service requirements, in order to adapt to the operational needs of mobile data and mobile multimedia, there is a higher requirement for base station antennas. For example, the frequency band of the base station antenna is required to be wider and wider, and the multi-band antenna is required to be installed in one radome; in addition, the index requirements of the base station antenna are gradually improved, including not only standing waves, isolation and intermodulation, but also including front-to-back ratio. Cross polarization, port pattern consistency, etc.

The base station antennas are generally combined in an array form by antenna elements of the same structure. Therefore, as the most basic component of the antenna, only the ultra-wideband antenna vibrator with superior performance can meet the higher and higher requirements of the communication industry for the base station antenna in performance. The traditional vibrator band range cannot meet this requirement, and the size range and height cannot meet the performance requirements in a limited space.

Therefore, there is a need for a dual-polarized vibrator having a wider frequency band and a smaller size and lower height in the lower frequency band to meet the ever-increasing requirements of the base station antenna.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a dual-polarized vibrator having a wider frequency band and a smaller size and a lower height in a lower frequency band, so as to achieve various performance requirements of the base station antenna. .

In order to achieve the above object, the present invention proposes the following technical solution: a dual-polarized vibrator for use as an antenna radiating element, comprising a plurality of vibrator radiating surfaces, a first printed circuit board and a metal support member, wherein the radiating surfaces of the vibrators are fixed at the One end of the metal support member has a feed gap between adjacent radiating surfaces of the vibrator; the first printed circuit board is fixed on the radiating surface of the vibrator, and a feed is formed on the first printed circuit board An electric network, the feed network comprising a first feed line and a second feed line, the first feed line and the second feed line being skipped by a feed bridge crossing, the feed network passing the The first feed line and the second feed line feed the feed gap.

Further, a feed line connection point is formed on the first feed line and the second feeder line, and the feed cable in the antenna passes through the metal support member and the first feed line and the second feed line The feeder connection points on the road are connected.

Furthermore, the dual polarized vibrator further includes a metal guiding piece fixed to the radiating surface of the vibrator by a fastener.

Furthermore, the dual polarized vibrator is fixed to a reflector, and the reflector is connected to the other end of the metal support with respect to the radiating surface of the vibrator.

Preferably, the number of the radiating surfaces of the vibrators is four and uniformly fixed at one end of the metal supporting member, and four feeding slots are formed correspondingly between the four radiating surfaces of the vibrators.

Preferably, two adjacent feed slots are perpendicular to each other.

Preferably, a hollow portion is provided on each of the radiating surfaces of the vibrator.

Preferably, the feed bridge is disposed on the second feeder line, and the second feeder line crosses the first feeder line through the feed bridge.

Preferably, the vibrator radiating surface and the metal support member may be a unitary structure, or may be fixedly connected by screws.

Preferably, the metal support member may also be a second printed circuit board, which serves as a support and can be connected to the feed network on the first printed circuit board instead of the feed cable.

Furthermore, the radiating surface of the vibrator is radiated by the feeding gap to complete the radiation.

The beneficial effects of the invention are:

1. The antenna oscillator feed of the present invention is implemented by feeding a feed network to a slot, that is, adopting a slot feed mode, so that it is smaller in size and lower in height in the lower frequency band; and the antenna oscillator of the present invention expands the antenna The frequency bandwidth improves the key performance indicators such as the standing wave ratio, isolation, front-to-back ratio, and cross polarization of the antenna.

2. The present invention also provides a metal guiding piece which, on the one hand, enables the vibrator to be well matched at a height lower than that of the conventional vibrator, and on the other hand, improves the cross polarization of the antenna.

DRAWINGS

1 is a schematic top plan view of a dual polarized vibrator according to an embodiment of the present invention;

2 is a schematic exploded view showing the structure of a dual-polarized vibrator according to an embodiment of the present invention;

3 is a schematic structural view of a radiating surface of a vibrator according to an embodiment of the present invention;

4 is a schematic structural view of a metal support member according to an embodiment of the present invention;

5 is a top plan view showing an alternative embodiment of the present invention;

Figure 6 is a schematic exploded view of an alternative embodiment of the present invention.

Reference numerals: 1, vibrating surface of the vibrator, 2, first printed circuit board, 21, first feeding line, 22, second feeding line, 23, feeding bridge, 24, feeder connection point, 3, metal support Piece, 4, feed gap, 5, metal lead sheet.

detailed description

The technical solutions of the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

1 and 2, a dual-polarized vibrator disclosed in the present invention is used as an antenna radiating unit, which includes a plurality of vibrator radiating surfaces 1, a first printed circuit board 2 and a metal supporting member 3, and a vibrator radiating surface. 1 is fixed to one end of the metal support member 3, and the first printed circuit board 2 is fixed to the vibrator radiating surface 1.

The vibrator radiating surface 1 and the metal supporting member 3 of the present invention can be an integrally cast structure, which can reduce the number of components of the vibrator and simplify the processing and assembly process. Of course, other methods can be used to achieve a fixed connection between the two, such as a screw connection.

As shown in FIG. 3, the radiating surface 1 of the vibrator is evenly distributed, and there is a feeding slit 4 between the adjacent radiating surfaces 1 of the vibrator, and the radiating surface 1 of the vibrator is fed through the feeding slit 4 to complete the radiation. The vibrating surface 1 of the vibrator can excavate some hollow portions (not shown) on the surface as needed so as to cover a small area, that is, the vibrating surface 1 of the vibrator of the present invention is not limited to a conventional square or rectangular shape, and can be cut into crescents. Shape or make any other form of deformation and improvement to reduce the area.

In a specific implementation, the number of the radiating surface 1 of the vibrator is set to four, and four feeding slots 4 are formed between the radiating surfaces 1 of the four vibrators, and the radiating surface 1 of the vibrator on each side of each feeding slot 4 constitutes a vibrator, four The radiating surface 1 of the vibrator constitutes two pairs of vibrators, each pair of vibrators forming a polarization direction, that is, achieving dual polarization of the vibrator.

The two adjacent feed slots 4 are perpendicular to each other, that is, the opposite two feed slots 4 are arranged in parallel or on the same straight line. Of course, other angles can also be formed between the adjacent two feed slots 4.

As shown in FIG. 1 and FIG. 2, a feed network is formed on the first printed circuit board 2 for feeding the feed gap 4. The feed network includes a first feed line 21 and a second feed line 22 on the first printed circuit board 2, a feed bridge 23 is disposed on the second feed line 22, and the second feed line 22 is passed through the feed bridge 23 crosses the first feed line 21 to achieve the intersection of the two. A feed line connection point 24 is disposed on the first feed line 21 and the second feed line 22 as a fixed point connecting the two

feed lines

21, 22 with a feed cable (not shown) in the metal support member 3. .

The first feed line 21 and the second feed line 22 each have a first end and a second end at both ends, and the first end and the second end of the first feed line 21 respectively correspond to the relative formation formed by the vibrator radiating surface 1. The two feed slots 4, the first end and the second end of the second feed line 22 respectively correspond to the other opposite feed slots 4 formed by the vibrator radiating surface 1, that is, each feed gap is realized 4 corresponds to a feeder line feeding the feed gap.

In a specific implementation, the first printed circuit board 2 can be affixed or fixed to the vibrator radiating surface 1 by fasteners.

As shown in FIG. 2 and FIG. 4, one end of the metal support member 3 is fixed to the radiating surface 1 of the vibrator, and the other end is fixed with a reflecting plate (not shown), that is, the radiating surface 1 of the vibrator is fixedly connected to the reflecting plate through the metal supporting member 3. The reflector can be fixedly connected to the metal support 3 by screws.

A feed piece (not shown) is generally disposed in the metal support member 3. The feed cable is connected to the feed piece, and the feed piece is connected to the feeder connection point 24 on the first printed circuit board 2 through the metal support member 3. In a specific implementation, the number of feed cables is two, corresponding to two feeder connection points 24 on the feed network, and one ends of the two feed cables are respectively fixed to the two feeder connection points 24 on the feed network. The other end is connected to an antenna phase shifting device (not shown). The feed cable can be soldered to the feeder connection point 24.

In a specific implementation, the metal support 3 can also be a printed circuit board, which is defined as a second printed circuit board to be distinguished from the first printed circuit board. The second printed circuit board is connected to the feed network on the first printed circuit board such that the second printed circuit board serves both as a support and as a feed.

As shown in FIG. 5 and FIG. 6, as another alternative embodiment of the present invention, the present invention provides a metal guiding sheet 5 on the first printed circuit board 2, and the metal guiding sheet 5 passes through the fastener and the first The printed circuit board 2 is fixedly connected to the radiating surface 1 of the vibrator, and the fastener can be a plastic screw. The shape of the metal guiding piece 5 can be set to any geometric shape. The metal guiding piece 5 is arranged on the one hand to enable the vibrator to be well matched at a height lower than that of the conventional vibrator, and on the other hand to improve the cross polarization of the antenna.

The technical content and the technical features of the present invention have been disclosed as above, but those skilled in the art can still make various alternatives and modifications without departing from the spirit and scope of the present invention based on the teachings and disclosures of the present invention. Therefore, the scope of protection of the present invention should not be limited to The disclosure of the embodiments is intended to cover various alternatives and modifications of the inventions

Claims

A dual-polarized vibrator for use as an antenna radiating element, comprising: a plurality of vibrator radiating surfaces, a first printed circuit board and a metal support member, wherein the vibrator radiating surface is fixed at one end of the metal supporting member, adjacent a feeding gap between the radiating surfaces of the vibrators; the first printed circuit board is fixed on the radiating surface of the vibrator, and a feeding network is formed on the first printed circuit board, and the feeding network includes a first feed line and a second feed line, the first feed line and the second feed line being skipped by a feed bridge crossing, the feed network passing the first feed line and the second feed An electrical line feeds the feed gap.
The dual-polarized vibrator according to claim 1, wherein a feed line connection point is formed on the first feed line and the second feed line, and a feed cable in the antenna passes through the metal support member The first feeder line is connected to a feeder connection point on the second feeder line.
The dual polarized vibrator of claim 1 wherein said dual polarized vibrator further comprises a metal tab oriented above said radiating surface of said vibrator by a fastener.
The dual-polarized vibrator according to any one of claims 1 to 3, characterized in that the number of radiating surfaces of the vibrator is four and uniformly fixed at one end of the metal supporting member, and the four radiating surfaces of the vibrator Four of the feed gaps are formed correspondingly.
The dual polarized vibrator according to claim 4, wherein the two adjacent feed slits are perpendicular to each other.
The dual-polarized vibrator according to any one of claims 1 to 3, characterized in that a hollow portion is provided on each of the radiating surfaces of the vibrator.
The dual polarization vibrator according to any one of claims 1 to 3, wherein the feed bridge is disposed on the second feeder line, and the second feeder line is spanned by the feeder bridge Passing through the first feed line.
The dual-polarized vibrator according to any one of claims 1 to 3, characterized in that the radiating surface of the vibrator and the metal supporting member are of a unitary structure or fixedly connected by screws.
The dual polarized vibrator according to any one of claims 1 to 3, wherein the metal support is a second printed circuit board, and the second printed circuit board is connected to a feed network on the first printed circuit board .
The dual-polarized vibrator according to any one of claims 1 to 3, characterized in that the radiating surface of the vibrator is radiated by the feeding gap to complete radiation.