This paper studies a new type of broadband capacitive voltage divider, which is used to measure the high voltage square wave pulse with sub-nanosecond front in a transmission line. The low-frequency characteristics of traditional capacitive dividers are extended by adding sampling resistors, and the high-frequency gain caused by stray capacitors of sampling resistors is eliminated by adding compensation capacitors, which greatly broadens the bandwidth of capacitive dividers. The findings show that when the sampling resistance is 6.1 kΩ and 12 kΩ and the equivalent grounding capacitance is about 15 pF and 30 pF, respectively, the bandwidth of the divider is 180 kHz to 2 GHz and 100 kHz to 2 GHz, which can meet the test requirements of the high voltage square wave pulse with sub-nanosecond front and dozens of nanosecond pulse width.

中文翻译：

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新型宽带电容器分压器，用于测量传输线中传输的超快方高压脉冲

本文研究了一种新型的宽带电容分压器，该分压器用于测量传输线中亚纳秒级前的高压方波脉冲。通过增加采样电阻来扩展传统电容分压器的低频特性，并通过添加补偿电容来消除由采样电阻的杂散电容引起的高频增益，从而大大拓宽了电容分压器的带宽。结果表明，当采样电阻为6.1kΩ和12kΩ，等效接地电容分别为15 pF和30 pF时，分频器的带宽为180 kHz至2 GHz和100 kHz至2 GHz，可以满足亚纳秒级前，数十纳秒脉冲宽度的高压方波脉冲的测试要求。