【摘要】 从理论上分析了充放电时高功率微波(HPM)驱动源——水介质脉冲形成线(PFL)上的波过程,提出了形成线放电过程的等效分析方法,得到了输出脉冲波形平顶畸变与PFL充电电压波形的关系,并使用Pspice软件对等效分析的结果进行了模拟验证.开展了基于水介质脉冲形成线的高功率微波驱动源的实验研究,并依据等效分析法得出的结论,通过控制激光触发开关的导通时间,明显减小了输出脉冲波形平顶的畸变,得到了幅值数百kV、脉宽约150ns、平顶约60ns的脉冲电压.更多还原

【Abstract】 According to the experiment,we analyze the propagation process of the electromagnetic wave on the pulse forming line with water-dielectric,which is the long pulse high power microwave-driven source.And then an equivalent method of discharge process is put forward to study the cause of the flattop waveform distortion.We ind the relationship between the variation trend of the output flattop waveform and the voltage waveform on the pulse forming line,which is validated through the Pspice simulation.By adjusting the breakover time of laser triggered switch,we obtain an output pulse with a flattop of 60 ns,FWHM (full width of half maximum) of 150 ns and voltage amplitude of several hundred kV,showing the distinct improvement on the flattop waveform.更多还原