Transform Method for Dielectric Periodic Interface Scattering
Keywords:
electromagnetic scattering, periodic surface, transform methodAbstract
An extended transform method is developed for calculating the 2-D scattering problem from dielectric periodic interfaces. The method transforms the problem into scattering from two imaginary planes, one of which cuts across the maximum points and another across the minimum points of the periodic interface. The fields just above and below the periodic interface are expanded into Taylor series with respect to the two planes respectively. Then by satisfying boundary condition, the unknown coefficients can be determined. Comparing with T-Matrix and MoM, proposed method is simpler in formulation and less in computational time. Near scattered field distributions above and in the trough region of the periodic interface are calculated by proposed method. The results are in good agreements with those of T-Matrix and MoM respectively.
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References
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