Simulation of Curved Surfaces by Patch Modeling in the Study of Electromagnetic Scattering by Resonant Size Bodies

The study of the scattering of conducting closed surfaces of resonant electric size is accomplished using the electrical field integral equation (EFIE) with the method of moments (MM) and planar triangular patch modeling. Patch models of regular polyhedrons of different number of faces are generated. The backscattering radar cross sections (RCS) of these bodies are calculated in all directions (solid angle of 4¿) of incidence of the plane wave. Vertical linear polarization is used. A comparison between the results obtained with the numerical method and the theoretical results of the circumscribed sphere is made, which permits to obtain some conclusions of the limitations in the simulation of curved surfaces by planar surface patches.