A New Waveguide Circular Polarizer

Abstract

The invention discloses a novel waveguide polarizer, which comprises a square waveguide (1), a metal partition plate (2) and two waveguide gradient parts (6 and 7), wherein the metal partition plate (2) comprises a receiving unit (3), a transmission unit (4) and a radiation unit (5) which are sequentially connected; the width of the metal partition plate (2) is equal to the length of the inner side of the square waveguide (1); the metal partition plate (2) is arranged at the axisymmetric position of the square waveguide (1); one end of the metal partition plate (2) is in contact with a square public port at one end of the square waveguide (1) and divides the square public port into two rectangular ports; the two waveguide gradient parts (6 and 7) are connected with the two rectangular ports respectively; two orthogonal wave beams received by the square waveguide (1) are converted by the metal partition plate (2); and a left-handed or right-handed circularly polarized signal is achieved by a phase difference generated between the received and converted wave beams. By the novel waveguide polarizer, good properties of the return loss, the insertion loss and the phase difference can be obtained.

Description

technical field [0001] The invention relates to a novel waveguide circular polarizer, which belongs to the technical field of microwave communication. Background technique [0002] The Septum Polarizer is a circular polarizer that has been widely used in the past ten years. It is mainly used in the fields of radio astronomy and satellite antennas to realize the separation and synthesis of circularly polarized signals. It is characterized by combining the functions of an Orthogonal Mode Transformer (OMT) and a circular polarizer, and has the advantages of compact structure and light weight. [0003] The use of a diaphragm circular polarizer can make the waveguide structure simple and compact, and can ensure the consistency of the insertion phase of the circular polarizer. It has high application value in places where phase balance is required, so it has been widely used. . The traditional spacer circular polarizer has a simple and compact structure, but its return loss, ins...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a new type of waveguide circular polarizer. With simple structural improvement, the spacer circular polarizer has a simple and compact structure and realizes the circular polarization during the circular polarization process. Problems with relatively low performance of wave loss, insertion loss and phase shift

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