Lateral wave contribution to the radiation from a dielectric half medium
Lateral wave contribution to the radiation from a dielectric half medium
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侧波对电介质半介质辐射的贡献
DOI：
10.1109/8.391154
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发表时间：
1995
影响因子：
5.7
通讯作者：
E. Rosen
中科院分区：
文献类型：
--
作者：
R. Shavit;E. Rosen
本文提出了两种计算薄介质中微波频率辐射的方法。一种基于几何光学，另一种基于物理光学。几何光学方法在计算掠入射薄介质中的辐射时遇到了一些困难，因为这种方法没有考虑侧向波的激发。考虑横向波贡献的物理光学方法成功地解决了这一问题，并较好地逼近了掠射附近的辐射场。给出了两种方法的数值结果和实验数据，验证了理论方法的有效性。>；
Two methods are presented for the computation of the radiation at microwave frequencies in a thin dielectric medium from a source located in a dense dielectric medium. One is based on geometrical optics and the other on physical optics. The geometrical optics approach encounters some difficulties in the evaluation of the radiation in the thin dielectric medium near grazing-incidence condition, due to excitation of a lateral wave, which is not taken in consideration by this approach. The physical optics method, which considers the lateral wave contribution, approaches this problem successfully and gives a better approximation of the radiated field near grazing. Numerical results, which compare the two methods, and experimental data are offered to validate the theoretical approach. >