Broadband quadruple-ridged waveguide circular polarizer

A technology of circular polarizer and ridge waveguide, which is applied in the field of feed network system, can solve the problems of difficult application, small size of cogging structure cannot be processed, precision is greatly affected by assembly, etc., and achieves the effect of good applicability and simple structure

Pending Publication Date: 2018-11-13
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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AI Technical Summary

Problems solved by technology

The circular polarizer can only be processed by splicing, its accuracy is greatly affected by the assembly, and the tiny size of the slot structure has the disadvantage that it cannot be processed, so it is difficult to apply to the 1mm millimeter wave band

Method used

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  • Broadband quadruple-ridged waveguide circular polarizer
  • Broadband quadruple-ridged waveguide circular polarizer
  • Broadband quadruple-ridged waveguide circular polarizer

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Embodiment Construction

[0024] The present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] see Figure 1 to Figure 3 , a broadband four-ridge waveguide circular polarizer, which includes a square waveguide cavity 1, a first vertical ridge 2-1, a second vertical ridge 2-2, a first horizontal ridge 3-1, and a second horizontal ridge 3-2 , both ends of the vertical ridge have a vertical ridge step transition 4 , and both ends of the horizontal ridge have a horizontal ridge step transition 5 . The first and second vertical ridges are respectively arranged on two opposite waveguide walls, and the first and second horizontal ridges are respectively arranged on the other two waveguide walls.

[0026] Wherein, the vertical ridges and the horizontal ridges have different lengths and thicknesses.

[0027] Specifically, the length of the vertical ridge is smaller than the length of the horizontal ridge, the ratio of the length o...

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Abstract

The invention discloses a broadband quadruple-ridged waveguide circular polarizer and belongs to the technical field of satellite communication. The broadband quadruple-ridged waveguide circular polarizer comprises a square waveguide cavity, two vertical ridges and two horizontal ridges, wherein the two vertical ridges are respectively arranged the opposite waveguide walls, and the two horizontalridges are respectively arranged on the other two waveguide walls. The broadband quadruple-ridged waveguide circular polarizer disclosed by the invention utilizes the quadruple-ridged waveguide broadband characteristic, so that the heights and the widths of two pairs of orthogonal ridges are different, and propagation constants of two orthogonal polarization waves can be changed; according to theprinciple of the circular polarizer, when two polarization waves with the same amplitude and the same phase pass through the circular polarizer, the amplitudes of the two polarization waves are equal,phase difference is 90 degrees, and circular polarization is formed; meanwhile, no loading and phase shifting unit and no toothed groove structure are arranged on the ridges, so that the defect thatan existing circular polarizer cannot be applied to 1mm waveband is overcome; the broadband quadruple-ridged waveguide circular polarizer has the characteristics of application to L waveband to W waveband, wide work frequency band, excellent electric performance, simple structure, no debugging, high reliability and suitability for volume production.

Description

technical field [0001] The invention discloses a wide-band four-ridge waveguide circular polarizer, which relates to the fields of satellite communication and radio astronomy antennas, and is suitable for feeding network systems of satellite communication and radio astronomy antennas. Background technique [0002] Circularly polarized antennas have been widely used in satellite communications, radio astronomy and other fields. Circular polarizers are used to convert linearly polarized signals into circularly polarized signals, and are important components in circularly polarized antennas. With the development of satellite communication technology and next-generation radio telescope technology, the demand for broadband operation is more and more urgent. Therefore, broadband circular polarizer technology is one of the key technologies for broadband circularly polarized reflector antenna feed. [0003] The circular polarizer is the main component that determines the circular ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/24
CPCH01Q15/24
Inventor 王进伍洋杜彪阮云国孙立杰李振生张博刘胜文韩国栋孙焕金孟则宇王垒李毅伟苏丽袁朝晖
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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