ABSTRACT An analytical solution for the diffraction of plane waves by a right angle impedance wedge which is lying between double negative and positive materials is investigated. In order to satisfy the boundary conditions and shifted shadow boundary, the diffracted fields are divided to subfields. As a result, an anomalous shift of shadow boundary is observed towards to lower surface of the wedge. In addition, geometric optics fields are determined by using the geometry of the problem. Also, the behavior of the fields is investigated numerically.

中文翻译：

---

左手和右手介质之间直角阻抗楔的衍射

摘要 研究了位于双负极和正极材料之间的直角阻抗楔对平面波衍射的解析解。为了满足边界条件和移动阴影边界，衍射场被划分为子场。结果，观察到阴影边界向楔形下表面的异常偏移。此外，几何光学场是通过使用问题的几何来确定的。此外，还对场的行为进行了数值研究。