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Abstract
Metallic gratings have long been used as frequency selective surfaces for applications ranging from beam splitters to polarization filters. These gratings are generally modeled as an infinite array of evenly spaced metallic strips. These structures are usually modeled by assuming that each of the strips in the grating has an infinite conductivity or that all strips are made of the same finite conductivity. In this work, various strip conductivity profiles are analyzed for their effect on the radar cross section area (RCS). The induced currents on each strip are solved to calculate the scattered field.