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2005-02-11
Asymptotic Solutions for Backscattering by Smooth 2D Surfaces
By
Progress In Electromagnetics Research, Vol. 53, 189-226, 2005
Abstract
igh-frequency asymptotic expansions of electric and magnetic fields are obtained at a perfectly conducting smooth 2-D surface illuminated by a plane incident wave in two cases of TE and TM linear polarization. Diffraction corrections up to the second order of the inverse large parameter p = ak (where a is a curvature radius at the specularly reflected point, and k is a field wavenumber) to the geometrical optics fields, and specifically to their phases, backscattering cross-sections (HH and VV for TE and TM polarizations, correspondingly), as well as the polarization ratio HH/VV, are derived for the specular points of a general form. These general results are applied to backscattering from cylinders with conical section directrixes (circle, parabola, ellipse and hyperbola), and a number of new compact explicit equations are derived, especially for elliptic and hyperbolic cylinders illuminated at an arbitrary incidence angle relative to their axes of symmetry.
Citation
Iosif Fuks , "Asymptotic Solutions for Backscattering by Smooth 2D Surfaces," Progress In Electromagnetics Research, Vol. 53, 189-226, 2005.
doi:10.2528/PIER04092102
http://www.jpier.org/PIER/pier.php?paper=0409212
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