双路脉冲输出结构理论设计与仿真

基于单台脉冲功率驱动源同时驱动两个微波器件产生双频高功率微波的构想，设计了一种双路短脉冲输出结构，其接于主开关后，能够将主开关产生的高压纳秒脉冲传输至高功率微波产生器。两路脉冲由同一脉冲源产生，具有很好的一致性。对双路输出结构脉冲传输过程进行了建模仿真，研究了传输线阻抗、输入脉冲前沿等电学参数对输出波形质量的影响规律，并完成了绝缘风险分析及结构优化。经评估，在前沿4～8 ns的准方波输入脉冲下，双路脉冲输出线的输出波形质量与单路传输线相当，其过冲振荡均小于20%、平顶振荡均小于1%，且能满足绝缘要求。

Design and simulation of dual short pulse transmission structure

The scheme of a dual short pulse output structure is proposed, according to the concept that two microwave device driven by the same pulsed accelerator can produced stable dual-frequency high power microwave (HPM) simultaneously. Structure model of a dual short pulse output structure is designed, which is connected to the main switch and can transmit the high voltage nanosecond pulse generated by the switch to the HPM generator. The two-channel pulse is produced by the same pulse source and has good consistency. In this paper, the pulse transmission process of the dual short pulse transmission structure is modeled and simulated, and the influence of electrical parameters such as transmission line impedance and input pulse front on output waveform quality is studied. The risk analysis about insulation and structural optimization are completed. It is estimated that the output pulse quality of the simultaneous output line is equal to that of the single transmission line under 4?8 ns quasi-square wave input pulse, and the overshoot oscillation is less than 20%, the flat top oscillation is less than 1%, and it can meet the insulation requirement.