基于光电倍增管的低噪声前置放大器的设计及其信号处理  

Design of Low-Noise Preamplifier Based on PMT and Its Signal Processing

作　　者：叶莉华[1] 汪海洋[1] 王文轩[1] 陆锦程[1] 崔一平[1] 沙涛[2] 杭建军 

机构地区：[1]先进光子学中心,电子科学与工程学院,东南大学,南京210096 [2]电子工程与光电技术学院,南京理工大学,南京210094 [3]南京文采科技有限责任公司,南京210017

出　　处：《电子器件》2013年第3期340-343,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61275182)

摘　　要：利用低噪声前置运算放大器把光电倍增管的输出信号尽可能无噪声的放大。从运放的选择,多级放大电路的设计要点,放大电路的噪声估算,PCB板布局连线和屏蔽等方面,提出了实用化的带宽达10 MHz的电路设计形式,以及注意事项及其信号调理方法。仿真结果显示了所设计电路的信号放大情况,此电路设计形式可以很好的放大并处理光电倍增管的输出信号。Using the low noise preamplifier to amplify the output signal of photomuhiplier tube without noise as soon as possible,this article describes the design principles of the photomultiplier tube selection and application. From the op-amp selection, multistage amplifier circuit design, circuit noise estimation, PCB board layout line and shielding, a practical circuit design of 10 MHz bandwidth is proposed;and also matters needing attention and its signal processing method. The simulation results show that the signal amplifying circuit designed, this circuit design can be very well amplifying and processing the output signal of the photomultiplier tube.

关 键 词：光电检测 前置放大器 低噪声 光电倍增管 信号处理 

分 类 号：TN152[电子电信—物理电子学]