Broadband inserting piece circular polarizer with bandwidth expanding function

A technology of expanding bandwidth and circular polarizer, which is applied in the direction of waveguide devices, electrical components, circuits, etc., can solve the problems of narrow working bandwidth, limited use, high axial ratio, etc., and achieve the advantages of convenient processing, simple structure and extended working bandwidth Effect

Inactive Publication Date: 2017-10-20
成都赛纳为特科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional slotted circular polarizer has a narrow operating bandwidth and a high axial ratio, which limits its use

Method used

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  • Broadband inserting piece circular polarizer with bandwidth expanding function
  • Broadband inserting piece circular polarizer with bandwidth expanding function
  • Broadband inserting piece circular polarizer with bandwidth expanding function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The broadband insert circular polarizer with the function of expanding the bandwidth of the present invention includes a common terminal 1, a port A4, a port B3, and at least two sections of waveguides connecting the common terminal 1 and the port A4 along the Z direction and simultaneously connecting the common terminal 1 and the port B3 Section 2; the shape of the common end 1 is square or circular; a reference system is established in the direction facing the outside of the common end 1, wherein the X direction is horizontally pointing to the right, the Y direction is a vertical upward direction, and the Z direction is perpendicular to The XY plane where the X direction and the Y direction are located; the X, Y, and Z directions conform to the right-hand rule, and at least one metal ridge 1a is respectively arranged on the inner wall of the common end 1 in the four directions of up, down, left, and right to form a four-ridge waveguide; Said metal ridge 1a is only conn...

Embodiment 2

[0024] Such as Figure 1~3 As shown, the broadband insert circular polarizer with the function of expanding the bandwidth of the present invention includes a common terminal 1, port A4 and port B3, and connects the common terminal 1 and port A4 along the Z direction and simultaneously connects the common terminal 1 and port B3 4 sections of waveguide sections 2; the shape of the common end 1 is square.

[0025] A metal ridge 1a is respectively provided on the inner walls of the common end 1 in the four directions of up, down, left, and right to form a four-ridge waveguide; the metal ridge 1a is only connected to the common end on the four inner walls of the common end 1 .

[0026] The cross-sectional shape of the port A4 and the port B3 perpendicular to the Z axis is rectangular, and its width along the X direction is less than 20% of its height along the Y direction.

[0027] The cross-sectional shape of the four waveguide segments 2 perpendicular to the Z direction is a re...

Embodiment 3

[0030] Such as Figure 1~4 shown. Compared with Embodiment 2, the only difference is that the number of waveguide sections 2 is seven. Simulation results: the reflection coefficient of port A4 of the compact insert circular polarizer is lower than -20dB; The conversion curve of the high-order mode is lower than -20dB; the isolation between port A4 and port B3 is greater than 20dB; the deviation error between the phase of the two linear polarization modes of the common terminal 1 and 90 degrees is less than + / -4 degrees; the common terminal 1 The amplitude error of the two linear polarization modes is less than + / -0.25dB.

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PUM

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Abstract

The invention discloses a broadband inserting piece circular polarizer with a bandwidth expanding function, which comprises a common terminal, a port A, a port B and at least two waveguide segments which communicate the common terminal and the port A and further communicate the common terminal and the port B at the same time along the Z direction. According to the invention, a quadruple-ridged waveguide common terminal and laterally loaded metal columns are adopted to expand the bandwidth of the inserting piece circular polarizer and reduce the axial ratio of circular polarization thereof. For example, the technical scheme disclosed by the invention can be used for designing an inserting piece circular polarizer capable of covering all Ka band satellite communication frequency bands ranging from 19.6GHz to 31GHz, and the axial ratio is lower than 1dB in the whole bandwidth. The broadband inserting piece circular polarizer is mainly applied to various microwave, millimeter wave and terahertz wave band mobile communication, satellite communication and radar systems.

Description

technical field [0001] The invention relates to the field of microwave communication, in particular to a wide-band insert circular polarizer with the function of expanding the bandwidth. Background technique [0002] In satellite mobile communication system, Orthogonal Mode Transducer (OMT) and Circular Polarizer are the key components. The traditional slotted circular polarizer has a narrow operating bandwidth and a high axial ratio, which limits its use. Contents of the invention [0003] The purpose of the present invention is to provide a wideband insert circular polarizer with the function of expanding the bandwidth. Compared with the prior art, the structure is simpler, the processing is more convenient, and the high-order mode is suppressed to expand the working bandwidth. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is: [0005] A broadband insert circular polarizer with the function of expanding the bandwid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/17
CPCH01P1/171
Inventor 王清源
Owner 成都赛纳为特科技有限公司
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