One-dimensional and two-dimensional microstrip periodic structures on the bianisotropic substrate

An efficient spectral-domain full-wave algorithm based on a 4 x 4 transfer matrix and the integral equation method is developed for microstrip lines and microstrip discontinuities, embedded into multilayered bianisotropic media. A method for the reduction of singularity order of Green's dyadic is proposed. An infinite array of microstrip lines and a 2D microstrip grating, formed by rectangular elements are considered. The dispersion characteristics of 1D slow-wave structures and the resonant frequencies of 2D grating are computed. The dependence of these characteristics upon the chirality and nonreciprocity of bianisotropic media is studied.