首页 | 杂志简介 | 征稿简则 | 投稿指南 | 常见问题 | 名词解释 | 刊物订阅 | 联系我们 | English
无线光传输系统接收机的设计及特性分析
投稿时间:2018-04-02  修订日期:2018-04-04  点此下载全文
引用本文:张子儒,丁雷,张冬冬.无线光传输系统接收机的设计及特性分析[J].红外,2018,39(6):27~33
摘要点击次数: 18
全文下载次数: 25
作者单位E-mail
张子儒 中国科学院上海技术物理研究所 zhangziru1991@163.com 
丁雷 中国科学院上海技术物理研究所  
张冬冬 中国科学院上海技术物理研究所  
基金项目:中科院战略性先导科技专项项目(XDA15012200);中科院上海技术物理研究所创新专项(CX-22)
中文摘要:设计和搭建了一个无线光传输系统。针对系统接收机的稳定性和信噪比要求,详细推导和分析了接收机的光电二极管特性、电路的稳定性和带宽、接收机的噪声和信噪比。详细分析了接收机中噪声的来源,给出了其影响因素及其计算方法,并参考实验器件参数实现了定量计算。在LTspice-IV上对光电二极管前置放大电路进行了建模和仿真,分析了其信号增益和噪声特性,其结果与理论分析接近。对系统进行了1 MHz方波传输实验测试,在接收端能得到较好的方波信号, 能为后续的信号处理模块提供稳定可靠的前级信号。
中文关键词:无线光传输  光电二极管  前置放大  相位裕量  噪声增益  LTspice-IV仿真
 
Design and Characteristics Analysis of Receiver for Wireless Optical Transmission System
Abstract:A wireless optical transmission system is designed and built. According to the system receiver stability and signal-to-noise (SNR) requirements, the photodiode characteristics, circuit stability and bandwidth, receiver noise and signal-to-noise ratio of the receiver are deduced and analyzed in detail. The noise source in the receiver is analyzed in detail and the influencing factors and calculation methods are given. The quantitative calculation is performed according to the parameters of the experimental components. The photodiode preamplifier circuit is modeled and simulated on LTspice-IV. Its signal gain and noise characteristics are analyzed. The results are close to those of theoretical analysis. A 1 MHz square wave transmission experiment is made on the system. Good square wave signals can be obtained at the receiving end. This result shows that it can provide stable and reliable pre-stage signals for the subsequent signal processing module.
keywords:wireless optical transmission  photodiode  pre-amplification  phase margin  noise gain  LTspice-IV simulation
查看全文  查看/发表评论  下载PDF阅读器

版权所有:《红外》编辑部

北京勤云科技发展有限公司