空间行波管放大器微小放电对策的初步研究  

Preliminary Research on Micro-discharge Treatment Measures for Space TWTAs

作　　者：冯昱嘉 梁英[1] 冯西贤[1] FENG Yu-jia;LIANG Ying;FENG Xi-xian(Institute of Space Microwave Technology,China Academy of Space Technology（Xi＇an）,Xi＇an 710100,China)

机构地区：[1]中国空间技术研究院西安分院空间微波技术研究所,陕西西安710100

出　　处：《真空电子技术》2018年第4期34-39,共6页Vacuum Electronics

摘　　要：本文介绍了行波管(TWT)放大器微小放电现象的特征规律,分析了微小放电工作原理,初步探讨了TWT内部绝缘材料表面以及高压电极之间产生微小放电的抑制措施,提出通过行波管电源自动重启功能降低微小放电现象引起自动关机影响的方法,并给出产品研制过程中对微小放电现象的检测和筛选方法,为产品可靠性提升提供了基础措施方法。In this paper,the characteristics of micro-discharge phenomenon in TWTA are introduced,the working principle of micro-discharge is analyzed,and the suppression measures for micro-discharge on internal insulating materialsurface and between high voltage electrodes are discussed preliminarily.EPC automatic restarting function is used to reduce the influence of spurious switch-off caused by TWT microdischarge.Detection methodsfor micro-discharge phenomenon and screening methods in TWT production process are also given,which provides basic methods for reliability improving of TWTAs.

关 键 词：空间行波管放大器 微小放电 自动重启 筛选 

分 类 号：V443[航空宇航科学与技术—飞行器设计]