Radiation field of cylindrical phased antenna array model on anisotropic impedance metasurface

Abstract

In the paper, the problem of excitation of cylindrical anisotropic impedance metasurface (MS) with input piecewise homogeneous bigyrotropic covering is formulated and solved. Influence of the covering is introduced with the two-sided impedance boundary conditions Asymptotic representation of total radiation far fields of the sources is found with eigen function method. Cylindrical phased antenna array model made of ribbons of exiting current on impedance MS with input covering is considered. Radiation patterns of the antenna array are obtained for linear co-polarizations and cross-polarizations. It is shown, that radiation patterns and polarization characteristics of the antenna array are determined in explicit form by tensor of impedance of cylindrical MS. Metasurface can be used to form and control radiation polarization of phased antenna array.