Vector-Diffraction Analysis of Finite Perfectly Conducting Gratings with Arbitrary Profiles

Fernando J. S. Moreira, Aluizio Prata, Jr.


A vector diffraction formulation for the analysis of perfectly conducting gratings of finite width and thickness is presented. The grating is assumed to have a finite number of infinitely-long arbitrarily-shaped grooves, and is illuminated by an arbitrary plane wave. Electric and magnetic field integral equations are used to solve, exactly (in a numerical sense), the corresponding TM and TE electromagnetic problems. The capability of the formulation is demonstrated by analyzing and optimizing a grating-type polarizer with non-identical triangular grooves.

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