CN202127100U

CN202127100U - T-type polarization separator

Info

Publication number: CN202127100U
Application number: CN201120251933XU
Authority: CN
Inventors: 赵媛媛; 雒建华; 王磊; 邓崇轩; 韩群英
Original assignee: Guangdong Shenglu Telecommunication Tech Co Ltd
Current assignee: Guangdong Shenglu Telecommunication Tech Co Ltd
Priority date: 2011-07-15
Filing date: 2011-07-15
Publication date: 2012-01-25
Anticipated expiration: 2021-07-15

Abstract

The utility model discloses a T-type polarization separator, which mainly consists of a main transmission waveguide and two polarization ports and a common port arranged thereon. The common port is connected with an antenna. The two polarization ports on the main transmission waveguide are in a mutually vertical structure and arranged respectively at both sides of the main transmission waveguide. The centre line of the two ports is vertical to the main transmission waveguide and in a same axis with the main transmission waveguide. The two polarization ports are standard rectangular waveguide ports. One of the two polarization ports is in a structure provided with a rectangular coupling aperture and a capacitive spinal column while the other end is in a transitional structure provided with a coupling window and a ladder. The main transmission waveguide is square or circular. The other end of the main transmission waveguide is provided with a metal plate short-circuit. The utility model has the advantages of simple structure, small volume and is free from debugging and suitable for mass production and the like.

Description

A kind of T type polarization separator

Technical field

The utility model relates to dual polarization microwave antenna and microwave device technical field, relates to the separation and the synthesizer of two orthogonally polarized waves of microwave antenna transmission in particular.

Background technology

In microwave radio-relay communication; Frequency resource is limited, in order to make full use of frequency resource, is not increasing under the new frequency resource condition; Enlarge message capacity; A very important load mode is exactly to adopt the dual polarization transmission means of channeling, and polarization separator is realized the important devices of dual polarization transmission just, and this device has reciprocity; Both can the linear polarised electromagnetic wave of two-way quadrature be closed the road and be fed in the same antenna, the Signal Separation of quadrature linear polarization that again can same antenna is received becomes two microwave signals.

General polarization separator has following two kinds of structures:, be made up of a common port 1 and two

polarization ports

2,3 like Fig. 1, shown in Figure 2 main transmission waveguide 4 and three ports; Two polarization ports lay respectively at the sidepiece and the end of main transmission waveguide; Polarization separator shown in Figure 1 is welded with a series of thin metal bars or sheet metal realizes that there is destabilizing factor in such product, poor reliability through the diametric(al) at circular waveguide; And the product technology difficulty is big, is unfavorable for processing.

Summary of the invention

The utility model provides the deficiency of the above-mentioned technology of a kind of solution, and having of proposing properties of product are stable, reliability is high, be fit to produce in batches T type polarization separator.

The utility model is to adopt following technical solution to realize above-mentioned purpose:

A kind of T type polarization separator; Mainly by main transmission waveguide and go up two the polarization ports and the shared port that are provided with and constitute, common port is connected with antenna, it is characterized in that; Two polarization ports on the said main transmission waveguide are mutual vertical-type structures; Be located at the both sides of main transmission waveguide respectively, the two-port center line is vertical with main transmission waveguide, and is on the same axis; Said two polarization ports are the standard rectangular waveguide port, and wherein a port adopts rectangle coupling aperture and capacitive spine structure, and coupling window and ladder transition structure are adopted in the another port.

Said main transmission waveguide is the main transmission waveguide of square waveguide or circular waveguide; The other end of said main transmission waveguide is provided with the metallic plate short circuit.

The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:

One, the utility model provides a kind of polarization separator of T type structure; Adopt circular waveguide or square waveguide as main transmission waveguide; Adjusting through short circuit face position and introduce inductance through the step on the wave guide wall of the right opposite of coupling aperture; Compensate the impedance mismatching that coupling window causes, regulate port match and two-port isolation, reach the performance index of polarization separator; Improved the stability and the reliability of properties of product greatly, and this product need not debugging, the suitable batch process in batches.

Two, the polarization separator of the utility model T type structure, the polarization output port is positioned at main transmission waveguide two sides, and the two-port center line is vertical with main transmission waveguide, and is on the same axis.For this structure, if main transmission waveguide is lengthened to certain size, this T type polarization separator promptly can be used as straight button polarization separator and uses.

Description of drawings

Fig. 1 is the structural representation of existing polarization separator;

Fig. 2 is the structural representation of existing polarization separator;

Fig. 3 is the utility model structural representation;

Fig. 4 is the test result figure of the utility model structure.

Description of reference numerals: 1,

common port

2,3, polarization port 4, main transmission waveguide

5, sheet metal

Embodiment

As shown in Figure 3, the utility model T type polarization separator comprises a common port 1 and two

rectangular waveguide ports

2,3, and the other end of main transmission waveguide 4 is directly used the metallic plate short circuit, and common port is connected with antenna; Polarization port the 2, the 3rd, mutual vertical-type structure is located at the sidepiece of main transmission waveguide 4, and this T type polarization separator is fed into the quadrature linear polarization microwave signal of the identical operating frequency of two-way in the antenna, the quadrature linear polarization Signal Separation that maybe will receive from antenna.

In the present embodiment, the main transmission waveguide of straight button polarization separator core body adopts square wave guide, is provided with the polarization port in the two sides of square wave guide; Two-port is vertical each other; Center line is vertical with main transmission waveguide, and is on the same axis, and the square wave guide other end is used the metallic plate short circuit.One of them port; Adopt rectangle coupling aperture and capacitive spine structure,, introduce inductance and compensate the impedance mismatching that coupling window causes through the step on the wave guide wall of the right opposite of coupling aperture; Coupling window and ladder transition structure are adopted in the another port; The ripple of this polarization reflects through the terminal metallic walls of common waveguide and is coupled into the rectangular waveguide port, has guaranteed the electric index of polarization separator, and test result is as shown in Figure 4: the maximum standing-wave ratio of two-port is respectively: 1.14; 1.09, be isolated into :-38dB.

Wherein, the main waveguide of main transmission can also adopt circular waveguide as the main waveguide of main transmission; Can process through mechanical split with aluminium or other metal bar, also can form through hot investment casting, simple in structure, volume is little, and is in light weight, improved the stability and the reliability of properties of product greatly, need not debugging, is fit to produce in batches.In addition main transmission waveguide is lengthened to certain size, this T type polarization separator promptly can be used as straight button polarization separator and uses.

The utility model is not limited to the foregoing description; The above preferred embodiment that is merely the utility model that shows; Can not limit the scope of the utility model with this; Therefore under the situation that does not break away from the utility model creation spirit, the equivalent variations of being done still belongs to the scope that the utility model is contained.

Claims

1. T type polarization separator; Mainly by main transmission waveguide and go up two the polarization ports and the shared port that are provided with and constitute, common port is connected with antenna, it is characterized in that; Two polarization ports on the said main transmission waveguide are mutual vertical-type structures; Be located at the both sides of main transmission waveguide respectively, the two-port center line is vertical with main transmission waveguide, and is on the same axis; Said two polarization ports are the standard rectangular waveguide port, and wherein a port adopts rectangle coupling aperture and capacitive spine structure, and coupling window and ladder transition structure are adopted in the another port.

2. a kind of T type polarization separator according to claim 1 is characterized in that said main transmission waveguide is the main transmission waveguide of square waveguide or circular waveguide.

3. a kind of T type polarization separator according to claim 1 and 2 is characterized in that the other end of said main transmission waveguide is provided with the metallic plate short circuit.