Abstract
A rigorous integral equation formulation in conjunction with Green's function theory is used to analyze the scattering phenomena by a periodic dielectric grating slab waveguide. Such a structure is mainly utilized to obtain a frequency selective surface, finding applications both in the microwave and the optical region. The grating is modeled as a periodic layer with grooves regular plane regions. The advantages of the developed method with respect to already established ones are discussed. The dependence of the waveguide's reflectance and transmission from the grooves characteristics is investigated.
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