Separated Equivalent Edge Current Method for Calculating Scattering Cross Sections of Polyhedron Structures

Hiroyuki OHMINE
Hiroshi AOKI
Takashi KATAGI

IEICE TRANSACTIONS on Communications   Vol.E76-B    No.11    pp.1439-1444
Publication Date: 1993/11/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antennas and Propagation
antennas and propagation,  scattering cross sections,  equivalent edge current,  geometrical theory of diffraction,  

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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 edge currents which are separated into components dependent on each of the two surfaces which form the edge. The separated equivalent edge currents are based on the Geometrical Theory of Diffraction (GTD). Using this Separated Equivalent Edge Current Method (SEECM) , fields scattered by a polyhedron structure can be calculated without special treatment of the singularity in the diffraction coefficient. This method can be also applied successfully to structures with convex surfaces by modeling them as polyhedron structures.