The effectiveness of the uniform asymptotic physical optics approach is tested with reference to the plane wave diffraction by a nonplanar junction that is formed by a perfect electrically conducting sheet and a lossy double-negative metamaterial layer. In particular, attention is paid to the accuracy of the total field that is obtained by adding the geometrical optics contributions to the diffraction one. Numerical tests and comparisons with full-wave numerical simulations are performed to assess the limits of validity of the approach.

中文翻译：

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关于PEC-DNG超材料结衍射的均匀渐近物理光学解的精度

参考由完美导电片和有损双负超材料层形成的非平面结的平面波衍射来测试均匀渐近物理光学方法的有效性。特别要注意通过将几何光学贡献添加到衍射中获得的总场的精度。进行数值测试并与全波数值模拟进行比较，以评估该方法的有效性限制。