微带型光导开关的电压转换效率  

Voltage conversion ratio of photoconductive semiconductor switch in microstrip test circuit

作　　者：孙云卿[1] 杨宏春[1] 吴明和[1] 曾刚[1] 崔海娟[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《强激光与粒子束》2010年第10期2378-2382,共5页High Power Laser and Particle Beams

基　　金：国家重点实验室基金项目(YAK200501)

摘　　要：采用微带测试电路对光导开关电压转换效率进行了测试。依据传输线理论,考虑微带传输电路的端点反射,计算给出了光导开关导通电阻不为0的情况下,微带测试电路电压转换效率的解析结果。计算表明:对窄脉宽的线性电脉冲输出,电压转换效率将小于50%;对lock-on模式下的宽脉冲输出,电压转换效率可以超过50%,在理想情况下达到100%;在临界状态下,形成双峰电脉冲输出。结果表明,存在端点反射且光导开关产生电脉冲脉宽达到一定值时,微带线可以起到倍压传输线的作用。The voltage conversion ratio of the photoconductive semiconductor switch（PCSS） is measured in the microstrip test circuit.The analytical equation of the ratio is deduced according to transmission line theory with the consideration of reflection from the source end and non-zero on-state resistances of PCSS.Calculations show that,when the PCSS is operated in linear mode,the voltage conversion ratio is always less than 50%;when the PCSS is operated in lock-on nonlinear mode,the ratio can be more than 50%,and reach 100% in ideal case;the output electrical pulse includes two peak voltages when the PCSS is operated in the critical case between the above two modes.The theoretical computation is in good agreement with the measured data within the error limitation.It is found that the microstrip transmission line increases matched load voltages if the superposition of output pulse and reflection pulse appears.

关 键 词：光导开关 电压转换效率 微带测试电路 端点反射 

分 类 号：TM836[电气工程—高电压与绝缘技术]