Line Integral Representation for Diffracted Fields in Physical Optics Approximation Based on Field Equivalence Principle and Maggi-Rubinowicz Transformation

Ken-ichi SAKINA  Makoto ANDO  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.9   pp.2589-2596
Publication Date: 2001/09/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
Category: EM Theory
Helmholtz-Kirchhoff surface integral,  Maggi-Rubinowicz transformation,  physical optics (PO),  

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This paper first gives the exact surface integral representation for PO diffracted electromagnetic fields from bounded flat plate through the deformations of the original surface by using field equivalence principle. This exact representation with the surface integral can be approximately reduced to novel line integral along the boundary of the plate by the use of Maggi-Rubinowicz transformation, which keeps a high accuracy even in near zone. Numerical results for the scattering of the electric dipole wave from the square planar plate are presented for demonstrating the accuracy.