Modeling of electromagnetic field distributions near the edge and radiation patterns of parabolic reflector antennas with non-uniform surface impedance

摘要

Modeling of electromagnetic field angular distributions near the edge of impedance half-plane, non-uniform in a direction perpendicular to the edge, is carried out. Comparative analysis to constant impedance for various impedance values and its gradients near the edge is accomplished. Modeling results for the mirror non-uniform impedance antenna's characteristics, taking into account a real source function, is considered. Optimum impedance distributions on the aperture by minimizing a beam width and first side-lobe level are found.