Abstract
Investigation on dielectric frequency selective structure with arbitrary shaped grating is done numerically for fllter applications. To obtain well designed parameters, the efiects of shape, size and dielectric constant of the structure are carefully studied. We examine in detail various structures and their spectral response which have not been reported by other authors. It is also shown how the frequency selective behavior of the structure can be controlled to meet a speciflc purpose for narrow linewidth flltering for normal incident angle. Results obtained for the scattering of several dielectric frequency selective surfaces are compared with both theoretical and experimental results presented in literatures, showing very good agreement. The efiect of arbitrary angle of incidence is also shown to excite higher order Floquet modes that afiect the flltering properties.
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