基于雪崩管Marx电路的高稳定度脉冲技术
Research on high-stability pulser based on avalanche transistor Marx circuit
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摘要: 采用Marx电路提高雪崩管脉冲源输出脉冲幅度，分析基于雪崩管Marx电路脉冲源的时基稳定度和波形稳定度的影响因素。采用适当的优化措施提高稳定度指标，设计了高稳定度的雪崩管脉冲源，脉冲峰值电压2 000 V(50 Ω负载)，脉冲全底宽度5 ns，上升时间400 ps，重复频率达到25 kHz，具有很高的稳定度指标：短时抖动小于30 ps，长时漂移小于100 ps/min，峰值电压和脉冲宽度抖动小于1 %。Abstract: The merits of the full-solid-state pulser, based on avalanche transistor, are high stability, narrow pulse and short rise-time. But the disadvantage of this pulser is that its output power is low, thus Marx circuit is used to improve the peak-voltage. In this paper, the effect factors of the time-stability and shape-stability are analyzed, some optimizing measures are used to improve the stability, and a high-stability pulser is designed. The pulser’s peak voltage is 2 000 V, pulse width is 5 ns, repetition frequency is higher than 25 kHz, and the pulse width jitter is less than 1% and the peak voltage jitter is less than 1%.
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Key words:
- avalanche transistor /
- all-solid-state /
- marx circuit /
- pulser /
- high stability /
- ultra-wide band
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