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Title: Modified spherical wave functions with anisotropy ratio: Application to the analysis of scattering by multilayered anisotropic shells
Authors: Qiu, C.-W. 
Zouhdi, S.
Razek, A.
Keywords: Absorbing media
Anisotropic ratio
Dyadic Green's functions (DGFs)
Eigenvalues and eigenfunctions
Electromagntic wave propagation
Green's function methods
Magnetic anisotopy
Modified spherical wave functions
Radially multilayered structures
Recurrence matrices
Recurrence matrix
Scattering and absorption
Vector eigenfunction expansion
Issue Date: Dec-2007
Citation: Qiu, C.-W., Zouhdi, S., Razek, A. (2007-12). Modified spherical wave functions with anisotropy ratio: Application to the analysis of scattering by multilayered anisotropic shells. IEEE Transactions on Antennas and Propagation 55 (12) : 3515-3523. ScholarBank@NUS Repository.
Abstract: We describe a novel and rigorous vector eigenfunction expansion of electric-type Green's dyadics for radially multilayered uniaxial anisotropic media in terms of the modified spherical vector wave functions, which can take into account the effects of anisotropy ratio systematically. In each layer, the material constitutions ε and μ are tensors and distribution of sources is arbitrary. Both the unbounded and scattering dyadic Green's functions (DGFs) for rotationally uniaxial anisotropic media are derived in spherical coordinates (r, θ, Φ). The coefficients of scattering DGFs, based on the coupling recursive algorithm satisfied by the coefficient matrix, are derived and expressed in a compact form. With these DGFs obtained, the electromagnetic fields in each layer are straightforward once the current source is known. A specific model is proposed for the scattering and absorption characteristics of multilayered uniaxial anisotropic spheres, and some novel performance regarding anisotropy effects is revealed. © 2007 IEEE.
Source Title: IEEE Transactions on Antennas and Propagation
ISSN: 0018926X
DOI: 10.1109/TAP.2007.910491
Appears in Collections:Staff Publications

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