ANALYSIS OF ARBITRARILY-SHAPED AND INHOMO GENEOUS 3D STRUCTURES

This paper illustrates the capability of SR3D software to rigorously a nalyze 3D radiating structures including wires (thin or thick), dielec tric parts and finite ground planes. The analysis method is within the class of boundary element method (BEM) and use integral equation form ulation (combined field integral equation CFIE) to solve electromagnet ic scattering problems. It includes a variational approach based on Ru msey reaction concept. The problem is numerically solved with a surfac e finite element method : surfaces of 3D conducting object and interfa ces between dielectric domains are meshed using surface triangular pat ches. We discuss on the numerical options chosen, the basis functions used, discretization density, and treatment of wires. The last section s emphasize the accuracy of the method on examples for which computed and measured reflection coefficient and radiation patterns are compare d.