基于光电倍增管的自动增益放大器设计

Design of automatic gain amplifier based on photomultiplier

为提高无线紫外光通信系统接收大动态范围信号的能力,设计了一种可根据光电倍增管输出信号大小自动调节增益的放大器。简单分析了光电倍增管的特点、自动增益控制技术原理和前置放大电路部分,并在雾霾天气进行了紫外光直视和非直视通信实验,对测试结果和仿真结果进行了对比分析。

In order to improve the ability of receiving large dynamic range signal in wireless ultraviolet（UV） communication system, this paper designs an amplifier which can adjust the gain according to the output sig- nal size of the photomultiplier tube. The paper briefly analyzes the characteristics of the photomultiplier tube, the principle of automatic gain control and the part of the preamplifier circuit, and carries out the UV line-of-sight and non-line-of-sight communication experiments in haze weather, compares and analyzes the test results and simulation results.