SEPARATED EQUIVALENT EDGE CURRENT METHOD FOR CALCULATING SCATTERING CROSS-SECTIONS OF POLYHEDRON STRUCTURES

This paper describes a novel method to calculate the fields scattered by a polyhedron structure for an incident plane wave. In this method, the fields diffracted by an edge are calculated using the equivalent e dge currents which are separated into components dependent on each of the two surfaces which form the edge. The separated equivalent edge cu rrents are based on the Geometrical Theory of Diffraction (GTD). Using this Separated Equivalent Edge Current Method (SEECM), fields scatter ed by a polyhedron structure can be calculated without special treatme nt of the singularity in the diffraction coefficient. This method can be also applied successfully to structures with convex surfaces by mod eling them as polyhedron structures.