AM/FM甚高频接收机实验案例的设计与实现  

The Design and Implementation of Experiment Case for the AM/FM VHF receiver

作　　者：金伟正[1] 夏可为 高懿凝 邓惠 杨光义[1] JIN Wei-zheng;XIA Ke-wei;GAO Yi-ning;DENG Hui;YANG Guang-yi(School of Electronic Information, Wuhan University, Wuhan 430072, China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430079

出　　处：《电气电子教学学报》2018年第6期115-118,147,共5页Journal of Electrical and Electronic Education

基　　金：武汉大学设备处开放实验项目;(项目号:WHU-2017-KFSY-02)

摘　　要：本文介绍一种新型的AM/FM甚高频接收机实验方案,该接收机可在100 MHz～136 MHz频段范围内既能接收AM信号也能接收FM信号,实验设计包括高频小信号放大器、高频振荡器、混频器、中频放大、斜率鉴频及包络检波、AGC静噪电路、低频放大及音频功率放大。实践教学表明,该电路实验效果良好,学生通过本实验可以较为全面地理解和掌握接收机的知识点,并为今后进行高频电路设计打下良好的基础。This paper introduces a new experimental program for AM/FM VHF receiver,which can accept both AM signals and FM signals from100MHz to136MHz.The experimental circuit includes high-frequency small-signal amplifier,high-frequency oscillator,mixer,limiting amplifier,slope frequency discriminator and envelope detection circuit,AGC squelch circuit,low frequency amplifier and audio power amplifier.The experiment circuit performs very well.The experiment not only helps students comprehensively understand and master the knowledge of the VHF receiver,but also lays a good foundation for the future high-frequency circuit design.

关 键 词：甚高频接收机 AM/FM 高频 解调 

分 类 号：TM933.1[电气工程—电力电子与电力传动]