Numerical study of plane wave scattering from cylindrical cavity-backed apertures with outer or inner material coating
Author
Çolak, Dilek
Advisor
Altıntaş, Ayhan
Date
1993Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
In this thesis, a dual-series-based solution is obtained for the scattering of
a time harmonic plane wave from a cavity-backed aperture(CBA) which is
formed by a slitted infinite circular cylinder coated with absorbing material.
The material coating can be done on the inner or outer surface of the cylinder.
For both cases, numerical results are presented for the radar cross section (RCS)
and comparisons of the suppression of RCS are given for two different realistic
absorbing materials. Finally, the dependence of RCS on the thickness of the
absorbing layer and on the aspect angle of the screen are presented numerically.
To the best of our knowledge, this is the first study made so far to solve the
problems of CBAs with material coating inside or outside with this approach.
Keywords
Radar Cross Section (RCS)cavity-backed aperture (CBA)
Riemann-Hilbert problem (RHP)
Electromagnetic Scattering
Dual-Series Equations