摘要
传输线理论是电磁场与微波技术中一个非常重要的理论,但概念抽象,理解困难。为了增强学生对传输线理论的理解,文中把传输线理论同均匀平面波传播理论做了详细的对比。利用HFSS软件构建了3种终端条件(短路、开路和匹配)下沿线工作状态的可视化实验教学模型,以视频图像的形式展示了沿线电磁场的工作状态,揭示了传输线理论的电磁场内在本质。这种感性认知实验有助于加强学生对传输线理论的理解和掌握。
The theory of transmission line is a very important theory in electromagnetic field and microwave technology, but the relative concepts are abstract and difficult to be understood. In order to enhance students’ understanding of transmission line theory, the detailed comparison of transmission line theory with uniform plane wave propagation theory is made in the paper. Finally, the visual experimental teaching models of the working state along the line under three terminal conditions (short circuit, open circuit and matching) are constructed by using HFSS software, and the working states of the electromagnetic field along the line are shown in the form of video images. The inherent nature of electromagnetic field in transmission line theory is revealed. Perceptual cognitive experiments are helpful to strengthen students’ understanding and master the transmission line theory.
作者
骆新江
张忠海
LUO Xinjiang;ZHANG Zhonghai(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3期139-143,共5页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(61501153
61102027)
杭州电子科技大学2018高等教育研究教学改革研究项目(YBJG201803)
杭州电子科技大学2017高等教育研究教学改革研究项目(YB201703)
关键词
可视化教学
传输线理论
电磁场
HFSS仿真
visualization teaching
transmission line theory
electromagnetic field
HFSS simulation
