基于DSRD的纳秒级固态脉冲发生器的研制

Development of the Nanosecond Solid-State Pulse Generator Based on DSRD

采用新型半导体开关漂移阶跃恢复二极管(DSRD)研制了一种纳秒级固态脉冲发生器。通过建立DSRD仿真等效模型,模拟DSRD器件的真实输出波形;采用双极并联结构电路设计,满足DSRD工作所需的电流要求;构建发生器系统工作电路仿真模型,并分析了电路参数对DSRD脉冲发生器系统输出波形的影响。针对脉冲发生器小型化的问题,将部分模块集成设计制作,优化布局,有效减少体积,减轻重量。结果表明:其输出电压可达3.74 kV,脉冲前沿8.2 ns,在重复频率200 Hz条件下可以稳定工作。研制出的脉冲发生器实现了较好的波形输出,为进一步实现固态脉冲源的小型化打下基础。

A nanosecond solid-state pulse generator was developed by using the new semiconductor switch drift step recovery diode ( DSRD). The simulation equivalent model of DSRD was established to simulate the real output waveform of DSRD devices. The bipolar parallel structure circuit was adopted to meet the current requirements of the DSRD. The working circuit simulation model of the generator system was constructed, and the influence of circuit parameters on the output waveform of the DSRD pulse generator system was analyzed. Aiming at the problem of miniaturization of the pulse generator, some modules were integrated, designed and manufactured to optimize the layout, it effectively reduces the bulk and weight of the solid-state pulse generator. The results show that the output voltage can reach 3. 74 kV , the pulse front edge is 8. 2 ns, and it can work stably at the repetition frequency of 200 Hz. The developed pulse generator achieves a good output waveform , and lays a foundation for the miniaturization of the solid-state pulse source.