Electrostatic image theory for layered dielectric sphere
作者:
I.V.Lindell,
M.E.Ermutlu,
A.H.Sihvola,
期刊:
IEE Proceedings H (Microwaves, Antennas and Propagation)
(IET Available online 1992)
卷期:
Volume 139,
issue 2
页码: 186-192
年代: 1992
DOI:10.1049/ip-h-2.1992.0035
出版商: IEE
数据来源: IET
摘要:
Static image theory for a homogeneous dielectric sphere, recently formulated by one of the authors, is generalised to the problem of a multilayer dielectric sphere in terms of a line-image charge. The imageline source is seen in this case to be in relation to the so-called static reflection coefficient that could be labelled as a finite Mellin transformation. This transformation is discussed and a Table of corresponding transforming functions is given. The result can be applied in a more complete quasistatic analysis of interactions of layered dielectric spherical particles in an artificial dielectric media. More closely, a two-layer sphere is considered with special cases of a thin layer, and that of a low contrast between the layers. Numerical results are calculated for the radiowave propagation problem of attenuation due to melting hail particles, assumed to be composed of a spherical ice core with a spherical water shell.
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