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Some diffraction patterns of an absorbing half-plane

Some diffraction patterns of an absorbing half-plane SummaryFar-field diffraction patterns are presented for the two-dimensional electromagnetic problem of plane wave scattering by a half-plane with a constant surface impedance. Previous results have been mainly concerned with a small surface impedance. In contrast with this, our diffraction patterns have been computed for the relatively arbitrary impedance of a half-plane which acts like a black screen for a prescribed angle of plane wave incidence. Such a half-plane may produce no reflected plane wave. Numerical calculations for the far fields show that the back-scattered fields are more noticeably influenced by the surface impedance than the forward-scattered fields. Nulls are found in the back-scattered fields. This type of black screen produces approximately the same scattering as the Sommerfeld black screen. Simple qualitative estimates of the diffracted far fields may be made without elaborate calculations. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Scientific Research, Section B Springer Journals

Some diffraction patterns of an absorbing half-plane

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References (5)

Publisher
Springer Journals
Copyright
Copyright © Martinus Nijhoff 1961
ISSN
0365-7140
DOI
10.1007/bf02922222
Publisher site
See Article on Publisher Site

Abstract

SummaryFar-field diffraction patterns are presented for the two-dimensional electromagnetic problem of plane wave scattering by a half-plane with a constant surface impedance. Previous results have been mainly concerned with a small surface impedance. In contrast with this, our diffraction patterns have been computed for the relatively arbitrary impedance of a half-plane which acts like a black screen for a prescribed angle of plane wave incidence. Such a half-plane may produce no reflected plane wave. Numerical calculations for the far fields show that the back-scattered fields are more noticeably influenced by the surface impedance than the forward-scattered fields. Nulls are found in the back-scattered fields. This type of black screen produces approximately the same scattering as the Sommerfeld black screen. Simple qualitative estimates of the diffracted far fields may be made without elaborate calculations.

Journal

Applied Scientific Research, Section B – Springer Journals

Published: Jun 1, 1961

Keywords: Plane Wave; Surface Impedance; Scattered Field; Plane Wave Incidence; Pole Singularity

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