1.5 kV、100 sp上升时间全固态脉冲发生器的优化与表征

L. Merensky, A. Kardo-Sysoev, A. Flerov, A. Pokryvailo, D. Shmilovitz, A. Kesar
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引用次数: 1

摘要

介绍了一种先进的全固态亚纳秒脉冲发生器。发电机的特点是有三个压缩阶段。第一级使用功率MOSFET,最初在存储电感中提供电流增加,然后断开电流。第二级采用3kv漂移阶跃恢复二极管,快速切断反向电流,产生小于1纳秒的上升时间脉冲,为峰值电容器充电。在最后阶段,硅雪崩成形器被用作快速闭合开关来放电电容器。在高达60 kHz的高脉冲重复频率和< 30 ps的低抖动下,实现了100 ps上升时间、1.5 kV输出、250 ps频宽和50欧姆负载。本文将介绍该发生器的优化和特性。
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Optimization and characterization of a 1.5 kV, 100 sp rise time, all-solid-state pulse generator
A state-of-the-art, all-solid-state sub-nanosecond pulse generator is presented. The generator is characterized by three compression stages. The first stage uses a power MOSFET that initially provides current increase in the storage inductor and then breaks the current. The second stage uses a 3 kV drift step recovery diode that cuts the reverse current rapidly to create a less than 1 nanosecond rise time pulse to charge a peaking capacitor. In the last stage, a silicon-avalanche shaper is used as a fast closing switch to discharge the capacitor. A 100 ps rise time, 1.5 kV output with 250 ps FWHM to a 50 Ohm load was achieved at a high pulse repetition frequency of up to 60 kHz with low < 30 ps jitter. The optimization and characterization of this generator will be presented.
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