Miniaturized Circular Polarizer

Abstract

The invention discloses a miniaturized circular polarizer, which comprises a flange, a square waveguide cavity and a set of large-diameter pins, the flange is installed at both ends of the square waveguide cavity, the pin set is arranged on the edge of the square waveguide cavity, Set the gradient cut angle on the edge of the square waveguide cavity where the collection is located, and the gradient cut angle is at the near port of the square waveguide cavity; set the equal depth cut angle on the edge of the square waveguide cavity where the pin assembly is located; Set the constant depth cut angle; a pin set contains at least one set of pins, a set of pins contains an even number of pins of equal length, and the distance between adjacent pins in the pin set is not equal. The square waveguide cavity is formed by aluminum block processing, and the gradual cut angle, equal depth cut angle, and equal depth cut angle are processed by EDM. The insertion depth of the pins in the pin set on the edge of the square waveguide cavity decreases successively from the middle to both ends. The technical solution proposed by the invention achieves the technical effect of reducing the size of the circular polarizer and reducing processing restrictions.

Description

technical field [0001] The present invention relates to a miniaturized circular polarizer, more specifically, relates to a miniaturized circular polarizer with Ku frequency band, wide frequency band, large diameter, pin loading with unequal spacing. Background technique [0002] The waveguide circular polarizer is a key component of the circularly polarized reflector antenna feed system, and its main function is to transform linearly polarized signals into circularly polarized signals. The structural form of the waveguide circular polarizer directly determines the volume, weight and electrical performance of the feed horn. Common forms of circular polarizers include square waveguide or circular waveguide inserting diaphragms, ridges, pins or dielectric plates and other phase-shifting element structures, as well as grooves on the symmetrical wall of the circular waveguide, cutting corners of the square waveguide, and circular polarizers. The waveguide transitions directly to...

AI Technical Summary

Problems solved by technology

This will result in a longer circular polarizer length and higher requirements for machining accuracy

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