粒子模拟在空间大功率微波器件微放电效应研究中的应用

Particle-in-Cell Simulations of Multipactor in High-power Microwave Devices for Space Applications

作为空间大功率微波器件的主要失效模式,微放电严重威胁着空间微波通信系统的安全与稳定,而微放电的研究与预防已经成为地面器件设计阶段亟需解决的关键问题。粒子模拟方法由于其适用范围广、分析功能强与模拟精度高等优点而广泛应用于微放电研究。本文简要阐述了粒子模拟在微放电阈值预测、微放电位置确定、微放电机制分析以及饱和效应研究中的应用及其发展趋势。

As the principal failure mode of high power microwave devices,multipactor breakdown severely threatens the security and stability of microwave communication system for space application.Therefore,multipactor investigation and prevention has become one key issue in the ground design stage of microwave devices.The particle-in-cell(PIC)simulation method has been widely applied in multipactor investigation for its distinctive features of high feasibility,comprehensive function and good accuracy.This paper briefly introduces current researches and future development of multipactor PIC simulations for multipactor threshold prediction,multipactor location determination,multipactor mechanism and saturation effect analysis.