实验科学与技术2026，Vol.24Issue(1)：19-25,7.DOI:10.12179/1672-4550.20240325
高频电路中混频失真综合实验的设计与实现
Comprehensive Experimental Design and Implementation of Mixing Distortion in High Frequency Circuit
摘要
Abstract
As a crucial component of superheterodyne receivers,the mixer,involving non-linear electronic circuits,has long been a challenging topic for theoretical and experimental teaching in universities.This paper presents a comprehensive mixer distortion experimental circuit using the common analog multiplier MC1496 as the mixer core.By remotely connecting to signal sources,oscilloscopes,and spectrum analyzers via computers,the experimental circuit facilitates traditional mixer experiments,allowing observation and recording of normal mixing effects.Furthermore,it enables dual-tone testing and mixer distortion analysis under various scenarios.Practical teaching demonstrates that this experiment effectively extracts the intrinsic characteristics of mixer circuits,comprehensively covering complex scenarios under both normal and faulty conditions,fully meeting the requirements of university teaching experiments and engineering testing practices.关键词
混频/失真/双频测试/实验教学Key words
mixing frequency/distortion/double frequency test/experimental teaching分类
信息技术与安全科学引用本文复制引用
杨光义,丁松雨,裴嘉伟,胡金堂..高频电路中混频失真综合实验的设计与实现[J].实验科学与技术,2026,24(1):19-25,7.基金项目
教育部产学合作协同育人项目(231105789144515) （231105789144515）
武汉大学教学改革建设项目(2024JYZL20-01) （2024JYZL20-01）
武汉大学设备处实验技术项目(WHU-2022-SYJS-07). （WHU-2022-SYJS-07）
