Analysis of the scattering by dielectric bodies using the SIE formulation

A surface integral equation (SIE) formulation is derived in order to analyze the scattering by a homogeneous dielectric body inside a cavity to which cylindrical waveguides are coupled. Cavity and dielectric body may be arbitrarily shaped; the waveguides may be of arbitrary cross section. Completely...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1994-03, Vol.42 (3), p.471-480
Main Authors: Jostingmeier, A., Omar, A.S.
Format: Article
Language:English
Subjects:
Apertures
Dielectrics
Electromagnetic fields
Electromagnetic waveguides
Integral equations
Magnetic fields
Nonuniform electric fields
Scattering
Surface treatment
Transmission line matrix methods
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Summary:A surface integral equation (SIE) formulation is derived in order to analyze the scattering by a homogeneous dielectric body inside a cavity to which cylindrical waveguides are coupled. Cavity and dielectric body may be arbitrarily shaped; the waveguides may be of arbitrary cross section. Completely closed dielectric-loaded cavities and structures containing metal inserts or magnetic conductors are considered as well. It is shown that the SIE formulation reduces a field problem by one dimension leading to highly efficient algorithms. From numerical results, the influence of surface current expansions is studied. The accuracy of the method is demonstrated by field plots and by the comparison of numerical results to those of other methods.< >
ISSN:0018-9480
1557-9670
DOI:10.1109/22.277442