摘要
提出一种基于空心阴极放电等离子体的宽带微带开关,其基本原理是以放电等离子体代替微带线射频微机电系统(RF MEMS)开关的金属悬臂来实现开关功能.利用低气压下空心阴极放电产生微带等离子体,并研究了这种开关的传输特性.结果表明,放电系统工作时,等离子体开关对1～9GHz电磁波的传输效率为10%～30%;不产生等离子体时,开关间隙将隔离电磁波;开关对脉冲电压的响应时间约为1μs.利用空心阴极结构和脉冲电压驱动可以实现宽带微带开关.
A broad-band plasma microstrip switch has been developed based on hollow cathode discharge.The basic principle of the plasma switch is replacing the metal element in RF MEMS by controllable plasma to perform the switch function in microstrip structure.A hollow cathode discharge under low pressure was employed to produce the plasma and the transmission characteristic of electromagnetic wave（EMW） was investigated experimentally.The results show that,when the plasma is presented,the switch is ON and the transmittance efficiency is 10%~30% for 1~9 GHz EMW.When the discharge is extinguished,the switch is OFF.The response time of EMW signal to the voltage pulse is about 1 μs.The present measures described in this article can achieve broad-band switch in microstrip line.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2011年第2期173-176,共4页
Transactions of Beijing Institute of Technology
基金
国家"八六三"计划项目(2007AA01Z276)
关键词
电磁波传输
微带开关
等离子体
空心阴极放电
electromagnetic propagation
microstrip switch
plasma
hollow cathode discharge
