Abstract In this paper, the signal shape similarity degree is defined as quantitative criteria to distinguish charge-sensitive or current-sensitive preamplifier of electrostatic sensor. To establish the relationship between the similarity degree and the preamplifier, the rate (k) of the cutoff frequency of the preamplifier to the highest frequency of the induced current signal is presented. It is found that there are monotonic relationships between the similarity degree and k, which are built and used to design charge-sensitive and current-sensitive preamplifiers with different requirements. The results of the single particle free-fall experiment verify the effectiveness of this method.

中文翻译：

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静电传感器电荷敏感和电流敏感前置放大器的设计

摘要 本文将信号形状相似度定义为区分静电传感器的电荷敏感或电流敏感前置放大器的量化标准。为了建立相似度与前置放大器之间的关系，给出了前置放大器截止频率与感应电流信号最高频率的比率（k）。发现相似度与k之间存在单调关系，建立并用于设计不同要求的电荷敏感和电流敏感前置放大器。单粒子自由落体实验结果验证了该方法的有效性。