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Electromagnetic scattering by arbitrarily shaped stratified anisotropic media using the equivalent dipole moment method
Author(s) -
Yuan Jiade,
Gu Changqing,
Li Zhuo
Publication year - 2010
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20446
Subject(s) - moment (physics) , isotropy , dipole , permittivity , physics , scattering , discretization , electric field , magnetic dipole , method of moments (probability theory) , tetrahedron , electric dipole moment , anisotropy , maxwell's equations , electromagnetic field , mathematical analysis , tensor (intrinsic definition) , field (mathematics) , computational physics , optics , classical mechanics , mathematics , geometry , dielectric , quantum mechanics , statistics , estimator , pure mathematics
The equivalent dipole moment method, which was used to model the isotropic media, is extended and applied to the analysis of the electromagnetic scattering characteristics of arbitrarily shaped multilayer electric anisotropic media in this work. The initial motivation to put forward this method is based on the intrinsic physical properties of the electric anisotropic media whose constitutive parameter permittivity is a tensor matrix that can be modeled as equivalent electric dipole moment. This method employs the method of moments to solve the electric field volume integral equation (VIE) formulated by discretizing the scattering body into tetrahedral volume elements, in which the electrical parameters are assumed constant in each element. Then the VIE is solved directly to obtain the scattered field. Numerical results are given to validate the accuracy and efficiency of this method. © 2010 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2010.