Equivalent Edge Currents for Arbitrary Angle Wedges Using Paths of Most Rapid Phase Variation

Keiichi NATSUHARA  Tsutomu MURASAKI  Makoto ANDO  

IEICE TRANSACTIONS on Electronics   Vol.E75-C   No.9   pp.1080-1087
Publication Date: 1992/09/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Theory
antennas and propagation,  diffraction,  method of equivalent edge currents,  geometrical theory of diffraction,  radar cross section,  

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Recently most of the singularities of the equivalent edge currents for flat plates were eliminated by the authors using the paths of most rapid phase variation. A unique direction on the plate was determined for given incidence and observer. This paper extends this method for arbitrary angle wedges and presents the new expressions of the equivalent edge currents. The resultant expressions are valid for any incidence and observation aspects and have no false singularities. Diffraction patterns and radar cross sections of 3-D objects composed of wedges are calculated by using these currents. They show good agreements with experimental data or the results by the other methods.