Electromagnetic diffraction from metallic deep cross-gratings

In order to have a benchmark solution for the electromagnetic scattering from a rough metallic surface, the particular case of a metallic plate hollowed with identical and regularly spaced cavities of sufficiently simple shape was studied. Hemispheroidal cavities allow us to carry out a rigorous the...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2003-07, Vol.51 (7), p.1669-1670
Main Authors: Gazoty, G., Deleuil, R., Sabouroux, P.
Format: Article
Language:English
Subjects:
Antennas
Benchmarking
Diffraction
Electromagnetic diffraction
Electromagnetic fields
Electromagnetic scattering
Equations
Experimentation
Gratings
Holes
Mathematical models
Microwave measurements
Microwaves
Optical polarization
Rough surfaces
Shape
Surface roughness
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Summary:In order to have a benchmark solution for the electromagnetic scattering from a rough metallic surface, the particular case of a metallic plate hollowed with identical and regularly spaced cavities of sufficiently simple shape was studied. Hemispheroidal cavities allow us to carry out a rigorous theoretical statement (modal method) which particularly may be applied to very deep irregularities (strong ellipticity). Our numerical results are compared with previous ones obtained with a cross-grating of hemispherical cavities and mainly with an experimentation we have specially performed in the microwave range.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2003.814726