Efficient Calculation of the Electromagnetic Scattering by Lossless or Lossy, Prolate or Oblate Dielectric Spheroids

Autor:	John A. Roumeliotis, Aristides D. Kotsis, Grigorios P. Zouros
Rok vydání:	2015
Předmět:	Physics Lossless compression Radiation Scattering Mathematical analysis Plane wave Separation of variables Lossy compression Condensed Matter Physics Exact solutions in general relativity Classical mechanics Dielectric loss Electrical and Electronic Engineering Eigenvalues and eigenvectors
Zdroj:	IEEE Transactions on Microwave Theory and Techniques. 63:864-876
ISSN:	1557-9670 0018-9480
DOI:	10.1109/tmtt.2015.2395418
Popis:	In this paper, we study the electromagnetic scattering of a plane wave by a prolate or oblate dielectric spheroid, which can be lossless or lossy. The presented efficient solution is obtained by applying a perturbation technique to the problem of the sphere using the spherical eigenvectors. This method allows a closed-form solution for the fields and the scattering cross sections, which is valid for small eccentricities of the spheroid. Alternatively, we construct the exact solution of the problem using the separation of variables in terms of the spheroidal eigenvectors and updated spheroidal algorithms that allow complex arguments. We compare the closed-form solution versus the exact solution and we conclude about its accuracy. Both polarizations are studied and numerical results are given for various values of the parameters.
Databáze:	OpenAIRE
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