Waveguide-type polarization splitter

Abstract

The invention provides a waveguide-type polarization splitter, which comprises a main waveguide pipe, a side wall waveguide coupling window on the top face of the main waveguide pipe and matrixes in the main waveguide pipe. The waveguide-type polarization splitter is characterized in that: the number of the matrixes is two or more and the matrixes are parallelly arranged in the main waveguide pipe; a tuning step positioned below the side wall waveguide coupling window is correspondingly arranged at the bottom of the main waveguide pipe; and the tuning step is a rectangular metal box body arranged at the bottom of the main waveguide pipe, and the front side face and the back side face of the metal box body are pressed against the front side face and the back side face of the main waveguide pipe. The number of the matrixes is two or more and the matrixes are parallelly arranged in the main waveguide pipe in a way of deviating from the waveguide coupling window. The metal box body of the tuning step is a box body with five sides and is buckled at the bottom of the main waveguide pipe in a way of deviating from or facing the side wall waveguide coupling window. The positions and sizes of the matrixes are determined by adopting a method of combining a finite-difference time-domain method and a genetic algorithm.

Description

technical field [0001] The invention relates to the field of dual-polarization antenna structure in satellite transceiver, in particular to a waveguide type polarization separator. Background technique [0002] The weight and size of the payload are very important factors for the satellite during the launch phase of the satellite. The polarization separator is a very important part of the dual-polarized antenna structure, usually located behind the circular horn, and its linear polarization The output is used to excite the circular waveguide, and the input is excited by two rectangular waveguides. The size and weight of the antenna feed are very important. Generally speaking, the smaller the weight and size, the better. [0003] Most of the existing waveguide dual-polarization splitters are orthogonal mode couplers, which adopt the single-mode structure of the main waveguide, and extract the vertically polarized signal through the coupling hole. The structure includes: the m...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a waveguide in order to overcome the problems of the existing single-diaphragm structure such as very long diaphragm size, difficult adjustment of single-mode devices, and poor cross-polarization levels of orthogonal film couplers. Type polarization separator to form a satellite antenna with a compact corrugated horn

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