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The Modified Surface-Normal Vectors in the Physical Optics

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3 Author(s)
Shijo, T. ; Corp. R&D Center, Toshiba Corp. R&D Center, Kawasaki ; Rodriguez, L. ; Ando, M.

Simple equivalent surface currents perturbed from the physical optics (PO) are proposed, which predict accurate scattering fields without using a special knowledge about the high frequency asymptotic theories such as the geometrical theory of diffraction (GTD). A novel and empirical concept named ldquomodified surface-normal vectorsrdquo is introduced in the classical definition of the PO current, which is defined in a way that the reflection law is satisfied at each point of interest in the integration region. This empirical and geometrical replacement of the surface-normal vectors drastically enhances the accuracy of the PO to a level of the GTD.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:56 ,  Issue: 12 )

Date of Publication:

Dec. 2008

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