摘要
针对学生对微波相关课程中传输线反射现象及匹配知识大多停留在对数学公式理解,而难以触及其物理本质,提出用ADS软件对传输线进行时域分析的实验教学方法。首先,应用时域多次反射的观点,从理论出发分析了通用传输线模型的时域电压波形;其次,设计了基于ADS的传输线终端短路和开路实验,让学生能够直接观察波的时域反射现象;最后,设计了基于ADS的传输线阻抗匹配实验,让学生能够从时域感受并理解传输线匹配的重要性。
In view of the fact that the students’understandings of transmission line reflection and matching knowledge in microwave-related courses mostly stay in mathematical formulas and difficultly touch the physical essence,an experimental teaching method of time-domain analysis for transmission linevia ADS software is proposed.Firstly,the time-domain voltage waveform of the universal transmission line model is theoretically analyzed from the viewpoint of multiple reflections in time domain.Secondly,the transmission line terminal short and open circuit experiments are designed based on ADS,so that students can directly observe the time-domain reflection phenomenon of the wave.Finally,the ADS-based transmission line impedance matching experiment is designed to let students experience and understand the importance of transmission line matching from time domain.
作者
潘玉剑
罗国清
PAN Yujian;LUO Guoqing(School of Electronics and Information,Hangzhou Dianzi University,Hangzhou 310018,China)
出处
《实验室研究与探索》
CAS
北大核心
2019年第7期111-114,123,共5页
Research and Exploration In Laboratory
基金
国家自然科学基金青年科学基金项目(61701145)
国家自然科学基金优秀青年科学基金项目(61722107)
杭州电子科技大学高等教育研究资助项目(ZZYQ201704)
关键词
先进设计系统
传输线
时域
反射
阻抗匹配
advanced design system(ADS)
transmission line
time domain
reflection
impedance matching
