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Frequency dependent finite‐difference–time‐domain [(fd) 2 td] formulation applied to ferrite material
Author(s) -
Melon C.,
Leveque Ph.,
Monediere T.,
Reineix A.,
Jecko F.
Publication year - 1994
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650071214
Subject(s) - finite difference time domain method , ferrite (magnet) , anisotropy , permeability (electromagnetism) , mathematical analysis , magnetic field , materials science , nuclear magnetic resonance , physics , mathematics , computational physics , condensed matter physics , chemistry , optics , composite material , quantum mechanics , biochemistry , membrane
When subjected to a constant magnetic field, ferrites exhibit anisotropic constitutive parameters. This anisotropy can be described in the frequency domain by using a permeability tensor [μ(ω)] instead of the usual scalar permeability. This article introduces a new method to analyze saturated ferrite structures by a FDTD algorithm where the convolution between the permeability tensor [μ(t)] = F −1 ([μ(ω)]) and the magnetic field H(t) = F −1 (H(ω)) are to be calculated. Results are obtained for a two‐dimensional problem and are compared with those given by direct differential FDTD algorithm [1] and a mode‐matching method [2]. © 1994 John Wiley & Sons, Inc.