电磁波极化的判别方法及MATLAB呈现

Discussion on the Polarization of Electromagnetic Wave and Visualization with MATLAB

文章介绍电磁波极化的概念和左旋、右旋极化波的判别方法。线性极化需满足条件"两相位相差0或π",圆极化波为"两振幅相等且相位差为π2",其他情形为椭圆极化波。通过两个方向即电场旋转方向与波传播方向来判别左旋与右旋极化波,同时利用MATLAB实现电场强度的轨迹可视化、形象化,加深学生对极化概念的进一步理解,有效提高了教学效果。

The method of the polarization is discussed in this paper. Linear, circular and elliptical polarizations are also reported. A linear polarization satisfies the same phase and different amplitudes, circular polarization with the same amplitude and phase difference of π 2, while the others is elliptically polarization wave. In order to make the course understand easily, MATLAB software is used as a platform in electromagnetic fields and waves of classroom teaching after many years of accumulated some teaching experience. The difficult vector analysis and abstract concept could be simplified; the vector and concept could be visualized by figures, which makes the course vividly, enriching the teaching content and improving a better teaching effect.