电磁波极化形式的频域判据  

Frequency Domain Criterion of Polarization of Electromagnetic Wave

作　　者：胡冰[1] 李世勇[1] 董李静 HU Bing;LI Shiyong;DONG Lijing(School of Information and Electronics,Beijing Institute of Technology,Being 100081,China)

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《电气电子教学学报》2023年第2期124-126,共3页Journal of Electrical and Electronic Education

基　　金：国家自然科学基金项目(61771049)。

摘　　要：电磁波极化的判定问题是电磁场理论教学中的重点和难点。当电磁波的电场分量和波矢量表达式是坐标基矢量的组合形式时,学生往往难以用右手定则判定其极化形式。根据电磁波极化的定义,结合有向曲线绕向的计算方法和复矢量运算法则,得出极化形式的频域判据。学生利用此判据可以直接对电场复矢量进行简单的矢量乘法运算即可完成判定,提高了解决此问题的效率和准确度。To determine the polarization of electromagnetic waves is the crucial and difficult issue in the teaching of electromagnetic field theory.When the electric field component and wave vector expression of electromagnetic wave are the combinations of coordinate base vectors,it is often difficult for students to determine its polarization by using the right-hand rule.In this paper,the frequency domain criterion of the polarization is given,based on the definition of electromagnetic wave polarization,combining the calculation method of directed curve winding direction and the complex vector algorithm.Students can directly perform simple vector multiplication on the electric field complex vector to complete the judgment,which improves the efficiency and accuracy of solving this problem.

关 键 词：电磁波 极化 复矢量 频域判据 

分 类 号：TM151[电气工程—电工理论与新技术]