摘要
在电磁场与电磁波教学中,利用MATLAB对导电媒质中传播的电磁波和电磁波在不同介质分界面的反射与透射进行仿真。着重以手机用的3 GHz频率电磁波在人体肌肉、干燥的混凝土和钢筋中的传播为例,仿真了均匀平面波在不同类型导电媒质中的传播过程,以及其斜入射理想介质、理想导体分界面后反射和透射的动态过程,使得抽象复杂的概念和公式直观形象化,帮助学生正确理解电磁波的传播。通过MATLAB GUI适当改变参数可以实现不同的电磁波传播形态的模拟,操作简单,方便教学应用。
In the teaching of electromagnetic field and electromagnetic wave,the electromagnetic wave propagated in conductive medium and the reflection and transmission of electromagnetic wave at the interface of different medium are simulated by MATLAB.Taking the propagation of 3 GHz frequency electromagnetic wave used in mobile phone in human muscle,dry concrete and rebar as an example,the propagation process of uniform plane wave in different types of conductive media and the dynamic process of reflection and transmission after obliquely incident on ideal medium and ideal conductor interface are simulated,which makes the abstract and complex concepts and formulas intuitive,and help students correctly understand the propagation of electromagnetic waves.The simulation of different electromagnetic wave propagation forms can be realized by changing the parameters of MATLAB GUI appropriately,which is easy to operate and convenient for teaching application.
作者
张梦娇
郑丹
刘小标
祁诗阳
李聪
ZHANG Mengjiao;ZHENG Dan;LIU Xiaobiao;QI Shiyang;LI Cong(College of Sciences,Henan Agricultural University,Zhenzhou 450002,China)
出处
《实验技术与管理》
CAS
北大核心
2021年第12期128-132,共5页
Experimental Technology and Management
基金
河南高等教育教学改革研究与实践项目(2017SJGLX242,2019SJGLX222)。
关键词
MATLAB
GUI
电磁场与电磁波
导电媒质
斜入射
反射与透射
MATLAB GUI
electromagnetic fields and electromagnetic waves
conductive medium
oblique incidence
reflection and transmission
作者简介
张梦娇(1989—),女,河南郑州,博士,副教授,主要研究方向为激光检测、冷原子物理,电磁场教学,planckgood@163.com。
