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RCS of a Parallel-Plate Waveguide Cavity with Three-Layer Material Loading
Shoichi KOSHIKAWA Takeshi MOMOSE Kazuya KOBAYASHI
Publication
IEICE TRANSACTIONS on Electronics
Vol.E77-C
No.9
pp.1514-1521 Publication Date: 1994/09/25 Online ISSN:
DOI: Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Electromagnetic Theory Keyword: Wiener-Hopf technique, scattering and diffraction, radar cross section, waveguide cavities,
Full Text: PDF>>
Summary:
A rigorous radar cross section (RCS) analysis of a two-dimensional parallel-plate waveguide cavity with three-layer material loading is carried out for the E- and H-polarized planc wave incidence using the Wiener-Hopf technique. Introducing the Fourier transform for the scattered field and applying boundary conditions in the transform domain, the problem is formulated in terms of the simultaneous Wiener-Hopf equations satisfied by the unknown spectral functions. The Wiener-Hopf equations are solved via the factorization and decomposition procedure together with rigorous asymptotics, leading to the efficient approximate solution. The scattered field in the real space is evaluated by taking the inverse Fourier transform and applying the saddle point method. Representative numerical examples on the RCS are given for various physical parameters. It is shown that the three-layer lossy material loading inside the cavity results in significant RCS reduction over broad frequency range.
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