Full-wave analysis of planar structures using Scale Changing Technique under feed-horn excitation

Full-wave analysis results of two different planar array structures illuminated by a waveguide feed horn antenna has been presented. One of the modelled structures consists of periodic arrangement of microstrip patches while the other is a metal grid comprised of identical rectangular perforations. An indigenous numerical technique called Scale Changing Technique (SCT) based on planar decomposition of array geometry has been applied for an efficient electromagnetic (EM) scattering analysis of these structures. The scattering pattern results obtained by SCT are then validated using an MOM based commercial simulation tool.