非匹配传输线产生宽谱脉冲实验研究  

Experimental analysis of wide-spectrum pulse with no matching transmission line

作　　者：丁恩燕[1] 张晋琪[1] 陆巍[1] 刘天文[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,高功率微波技术重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2014年第9期279-282,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院重点基金项目(2013A0402021);国家高技术发展计划项目

摘　　要：介绍了基于短路开关-锐化开关组合的非匹配传输线的工作原理,通过数值模拟分析了开关的导通时间、导通延时以及形成线的长度对输出宽谱振荡脉冲的影响。设计了非匹配传输线的实验装置并在500kV Marx发生器上开展了实验研究。在短路开关间距为4mm、腔体内充入SF6气体的压力为1.15MPa,锐化开关间距为2.5mm、腔体内SF6气体的压力为1.0MPa的条件下,在50Ω传输线上测得的峰值功率为3.3GW,振荡脉冲的中心频率为169MHz,百分比带宽为22.9%。This paper presents a high power no matching transmission line based on chopping-peaking switch,and studies its operating principles.The effects of the switch break-over time,the switch break-over time-delay and the length of the no matching transmission line on the result of output wide-spectrum pulse are analyzed.A high power no matching transmission line is designed accordingly and high voltage experiments are conducted on the 500 kV Marx generation.The no matching transmission line can output wide-spectrum pulse with a peak power of 3.3GW,a center frequency of 169 MHz,a band width of 22.9% when the chopping switch space is 4mm with 1.15 MPa SF6and the peaking switch space is 2.5mm with 1.0MPa SF6.

关 键 词：短路开关 锐化开关 宽谱振荡脉冲 非匹配传输线 

分 类 号：TN782[电子电信—电路与系统]