亚纳秒脉冲高电压测量探头  

D-dot monitor for sub-nanosecond high voltage pulse measurement

作　　者：卫兵[1] 方东凡[1] 卿燕玲[1] 孙奇志[1] 丰树平[1] 杨礼兵[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《强激光与粒子束》2012年第6期1497-1501,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金青年基金项目(51107127)

摘　　要：为测量紧凑型快前沿高电压脉冲源的输出电压,设计了D-dot电压探头。分别进行了刻度因素标定和频响标定,采用前沿约50ns的高压脉冲信号对探头进行在线标定确定探头的刻度因素。将探头安装在阻抗为50Ω的传输线上,用亚纳秒脉冲源进行频响标定,表明该探头的响应约为150ps。高压实验结果表明该探头能够正确获取高电压快脉冲信号,工作稳定可靠。A kind of D-dot monitor has been designed to measure the high voltage pulse on an impedance transformer line of compact fast rise time pulse generator.The scaling factor of the D-dot monitor was calibrated in-situ by using a calibrated resistive divider and a high voltage pulse whose rise time is about 50 ns.The response of the monitor was tested by using a 50 Ω transmission line installed with the D-dot monitor.When the rise time of input pulse is about 320 ps,the rise time of the pulse output by the D-dot monitor is about 350 ps.The response of the D-dot monitor is about 150 ps.Thus the monitor can measure the voltage pulses with the rise time exceeding 450 ps.The experiment results indicate that the D-dot monitor can reliably and accurately measure the sub-nanosecond high voltage pulses.

关 键 词：亚纳秒脉冲高电压 D-dot探头 频率响应 标定 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]