Blumlein双极脉冲形成线

Blumlein bipolar pulse forming line

为了提高超宽带系统的辐射因子,对超宽带脉冲整形技术进行了深入研究,介绍了采用Blum-lein线产生双极脉冲的高功率双极脉冲产生技术。对采用Blumlein线产生双极脉冲的原理进行了讨论,通过数值模拟分析了影响双极脉冲形成的主要因素。设计了一套Blumlein高功率双极脉冲形成线,在800kV脉冲源上开展了高压实验研究,分析了开关及形成线长度对形双极脉冲的影响。在输入单极脉冲电压为652.0kV、脉宽为2.1ns的情况下,Blumlein双极脉冲形成线可以产生负峰电压为571.9kV、正峰电压为550.4kV、半周期为740ps的双极脉冲,峰-峰值电压是入射脉冲峰值电压的1.72倍,辐射因子为4.54MV。

The paper presents a high power bipolar pulse forming line based on Blumlein line and peaking-chopping（P-C） switch,and studies its operating principles.A high power bipolar pulse forming line is designed accordingly,and high voltage experiments about the pulse forming line are conducted on the 800 kV ultra-wideband high power pulse source.The effect of P-C switch and length of the pulse forming line on the output bipolar pulse is analyzed.The Blumlein bipolar pulse forming line can output bipolar pulses with peak voltages of-571.9 kV and ＋550.4 kV,and peak-to-peak interval of 740 ps,for the input pulse with 652.0 kV peak voltage and 2.1 ns width.The peak-peak voltage of the bipolar pulses is 1.72 times that of the input pulse,and the field-range product is 4.54 MV.