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Wiener-Hopf Analysis of the Plane Wave Diffraction by a Thin Material Strip: the Case of E Polarization
Takashi NAGASAKA Kazuya KOBAYASHI
IEICE TRANSACTIONS on Electronics
Publication Date: 2018/01/01
Online ISSN: 1745-1353
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: Electromagnetic Theory
material strip, approximate boundary conditions, Wiener-Hopf technique, asymptotic solution, radar cross section,
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The problem of E-polarized plane wave diffraction by a thin material strip is analyzed using the Wiener-Hopf technique together with approximate boundary conditions. Exact and high-frequency asymptotic solutions are obtained. Our final solution is valid for the case where the strip thickness is small and the strip width is large in comparison to the wavelength. The scattered field is evaluated asymptotically based on the saddle point method and a far field expression is derived. Numerical examples on the radar cross section (RCS) are presented for various physical parameters and the scattering characteristics of the strip are discussed in detail.