High-power circulator and microdischarge-resistant design method thereof

Abstract

The invention discloses a high-power circulator. The high-power circulator comprises a metal cavity (1), a ferrite gyromagnet substrate (2) and a medium neck (3), wherein the metal cavity (1) comprises an upper cover and a base, grooves are formed in the upper cover and the base at mirror symmetry positions, the upper cover is mounted on the base, and a cavity is formed between the upper cover and the base; the ferrite gyromagnet substrate (2) is positioned inside the medium neck (3); the medium neck (3) is mounted in the cavity of the metal cavity (1) and is positioned between the groove of the upper cover and the groove of the base, so that the ferrite gyromagnet substrate (2) clings to the metal cavity (1). According to the method disclosed by the invention, the strongest field intensity is firstly concentrated on a gyromagnet substrate area through initial electrical performance design optimization, then multilayer concentric medium circular rings are loaded in the area to form the medium neck with dielectric constant of space variation, then electrical performance optimization and microdischarge simulating optimization are further carried out, and microdischarge electron orbit blocking is realized under the premise of meeting actual electrical performance requirement, so that the microdischarge threshold value power is effectively promoted.

Description

technical field [0001] The invention relates to a circulator and an anti-micro-discharge design method thereof. Background technique [0002] The high microdischarge risk of high-power microwave components of spacecraft is a key factor affecting the long life and high reliability of spacecraft payloads, and it is also the largest single-point failure link of satellites under high-power applications. [0003] Traditional microdischarge suppression methods are mainly divided into two categories: physical suppression methods and chemical suppression methods. Among them, the physical suppression method mainly realizes the improvement of the micro-discharge threshold by increasing the distance between the metal surfaces at the maximum electric field intensity of the microwave component. For spacecraft microwave components, due to the strict control of their volume and quality, the method of increasing the micro-discharge threshold by increasing the physical size has great limita...

AI Technical Summary

Problems solved by technology

This type of method leads to a general increase in loss and has a great impact on the electrical properties of microwave components

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