基于雪崩三极管的新型并级联脉冲发射技术

A novel parallel cascading pulse emission technology based on avalanche transistor

针对雪崩三极管构成的Mark级联电路高幅值需要多级级联以及雪崩三极管制作工艺造成的多级电路不能同时触发等缺点,设计了一种特殊的并级联结构,使整个电路在临界雪崩电压值的直流电源供电条件下同时触发,产生信号质量明显优于同级数Marx电路的高幅值、窄脉宽的脉冲信号。文中对雪崩效应的原理进行分析,然后讲述雪崩三极管级联电路的工作原理,在此基础上介绍改进之后的并级联电路,并对其进行仿真分析和实物测试,可以得到上升沿1.9 ns、脉宽4.25 ns、幅值300 V左右的负脉冲,结果表明改进后的脉冲发生装置性能得到很好的改善。

In allusion to the shortcomings of the high amplitude of the Mark cascade circuit composed of avalanche transistors,such as the need for multi-cascade cascades and the multi-stage circuit cannot be triggered at the same time due to the avalanche transistor production process,a special parallel cascade structure is designed to make the entire circuittrigger simultaneously under the direct current(DC) power supply conditions of the critical avalanche voltage value,and the signal quality is significantly better than the high amplitude and narrow pulse width pulse signal of the same level number Marx circuit.The working principle of avalanche triode cascade circuit is described. On this basis,the improved parallel cascade circuit is introduced,and its simulation analysis and physical test are carried out. The negative pulse with rising edge of 1.9 ns,pulse width of 4.25 ns and amplitude of about 300 V can be obtained. The results show that the performance of the modified pulse generator device is well improved.