Scattering from a sphere of small radius embedded into a dielectric one

In this paper, the scattering of a plane electromagnetic wave from a metallic or dielectric sphere of electrically small radius, embedded into a dielectric one, is considered. The classical method of separation of variables is used, combined with translational addition theorems for spherical vector...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1995-01, Vol.43 (1), p.155-168
Main Authors: Roumeliotis, J.A., Kakogiannos, N.B., Kanellopoulos, J.D.
Format: Article
Language:English
Subjects:
Applied sciences
Dielectric constant
Dielectric materials
Diffraction, scattering, reflection
Electromagnetic scattering
Exact sciences and technology
Geometry
Nonuniform electric fields
Permeability
Perturbation methods
Radiocommunications
Radiowave propagation
Region 1
Shape
Telecommunications
Telecommunications and information theory
Wave functions
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Summary:In this paper, the scattering of a plane electromagnetic wave from a metallic or dielectric sphere of electrically small radius, embedded into a dielectric one, is considered. The classical method of separation of variables is used, combined with translational addition theorems for spherical vector wave functions. Analytical expressions are obtained for the scattered field and the various scattering cross-sections, in the case of an inner sphere with electrically small radius. Numerical results are given for various values of the parameters and for metallic and dielectric inner sphere. Some remarks are made about the possibility of detection or identification of inhomogeneities or nonsymmetries.< >
ISSN:0018-9480
1557-9670
DOI:10.1109/22.362995