一种微波测量实验系统的优化

本文从微波技术实验教学的实际出发,分析了传统的基于波导测量线的微波测量系统存在的不足以及用微波自动测量线代替手动测量在实验过程中存在的问题。在此基础上,介绍了一种基于数字式弱电流测量仪的微波测量系统的优化方案,并给出了数字式弱电流测量仪的整体设计方案以及其信号调理模块、显示模块、采集与控制模块、电源模块和扩展模块等部分的详细设计。通过该改进方案,在提高微波测量系统测量精度、直观性和稳定性的同时,也避免了微波技术实验完全采用全自动化测量造成的学生实际动手实践不足的问题,从而更好地满足实验教学的要求。...

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Bibliographic Details
Published in实验室研究与探索 Vol. 33; no. 12; pp. 96 - 98
Main Author 张兰 陈小桥 陈章友
Format Journal Article
LanguageChinese
Published 武汉大学电子信息学院,湖北武汉,430072 2014
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Summary:本文从微波技术实验教学的实际出发,分析了传统的基于波导测量线的微波测量系统存在的不足以及用微波自动测量线代替手动测量在实验过程中存在的问题。在此基础上,介绍了一种基于数字式弱电流测量仪的微波测量系统的优化方案,并给出了数字式弱电流测量仪的整体设计方案以及其信号调理模块、显示模块、采集与控制模块、电源模块和扩展模块等部分的详细设计。通过该改进方案,在提高微波测量系统测量精度、直观性和稳定性的同时,也避免了微波技术实验完全采用全自动化测量造成的学生实际动手实践不足的问题,从而更好地满足实验教学的要求。
Bibliography:Starting from the teaching of microwave measurement course,this paper analyzes the shortcomings of the traditional microwave measurement system based on waveguide slotted line and the problems in experiment teaching which is resulted from substituting microwave measuring experiment device by microwave automatic measurement system.A new improvement of experiment system for microwave measurement is introduced. The overall design,the signal modulate circuit,the display module,the data acquisition and control circuit,the power module and the extension module of the digital low current measurement are analyzed in detail. Through this improved system,the good effects about precision,objectivity,and stability are obtained. Besides this,the problem that the students are not given enough practice in experiments caused by the microwave automatic measurement system is averted. So it can accord with requirements of teaching experiment better.
ZHANG Lan,CHEN Xiao-qiao,CHEN Zhang-you (School of Electronic Information, Wuhan
ISSN:1006-7167