Micro-discharge equivalent simulation method and system for dielectric material with microstructure surface

Abstract

According to the micro-discharge equivalent simulation method and system for the dielectric material with the microstructure surface, 3D modeling software is adopted to establish a dielectric material loading microwave component geometric model with the microstructure surface, a frequency domain solver model of a CST microwave studio is utilized to calculate electromagnetic field distribution in the microwave component, and an obtained electromagnetic field result is calculated into a micro-discharge equivalent simulation result. Establishing a secondary electron emission model of the dielectric material with the microstructure surface, calculating secondary electron emission coefficient curves under different radio frequency electric field amplitudes and phases, and adding equivalent results of the secondary electron emission coefficient curves of the dielectric material with the microstructure surface obtained by simulation into micro-discharge particle simulation. A rapid equivalent simulation method for correlation between the material surface microscale and the microwave component scale is established, and by means of the method, the secondary electron emission coefficient curve of the square hole array microstructure and the change rule of the threshold value along with the surface appearance, the secondary electron emission coefficient of the material is effectively reduced by conducting grooving treatment on the material surface, and the microwave component scale is obtained. And the micro-discharge threshold is improved.

Description

technical field [0001] The invention belongs to the technical field of reliability research of space microwave components, and in particular relates to a microdischarge equivalent simulation method and system of a dielectric material with a microstructure surface. Background technique [0002] With the development of spacecraft payloads towards miniaturization and high communication power, dielectric materials and microwave components (dielectric resonator filters, ferrite circulators, dielectric-loaded waveguides, etc.) Lightweight, high reliability and other advantages, it has been more and more widely used in satellite systems. In order to meet the requirements of higher power, higher bit rate, more channel applications and miniaturization design, the future spacecraft is developing towards the trend of microwave components. At the same time, the potential micro-discharge special effects in the passive system of high-power microwave components in space have become a scie...

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Problems solved by technology

In addition, for microwave components loaded on dielectric materials with microstructured surfaces, since the scale of the surface microstructure is generally on the order of microns, while the scale of microwave components is on the order of millimeters or centimeters, if a uniform time step is used for particle simulation calculations, The entire physical process involves surface microscale and device scale issues, which will undoubtedly consume a lot of computing time

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