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Modeling of Ferrite-based Materials for Shielding Enclosures

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Bibliographic Details
Title: Modeling of Ferrite-based Materials for Shielding Enclosures
Authors: Koledintseva, Marina, Drewniak, James L., Zhang, Yaojiang, Lenn, James A., Thoms, Melanie
Source: Electrical and Computer Engineering Faculty Research & Creative Works
Publisher Information: Scholars' Mine
Publication Year: 2009
Collection: Missouri University of Science and Technology (Missouri S&T): Scholars' Mine
Subject Terms: Bruggeman Formulation, FDTD Technique, Maxwell Garnett Formulation, Magneto-Dielectric Composites, Microwave Permeability, Microwave Permittivity, Shielding Effectiveness (S.E.), Maxwell Garnett And Bruggeman Formulations, Microwave Permittivity And Permeability, Capillarity, Composite Micromechanics, Ferrite, Garnets, Magnetic Shielding, Magnetos, Maxwell Equations, Microwaves, Permittivity, Wave Equations, Analytical Models, Auxiliary Differential Equations, Dielectric Mixtures, Effective Medium Theories, FDTD Codes, Ferrite Powders, Modeling Structures, Numerical Examples, Shielding Enclosures, Finite Difference Time Domain Method, Electrical and Computer Engineering
Description: An analytical model for a magneto-dielectric composite material is presented based on the Maxwell Garnett rule for a dielectric mixture, and on Bruggeman's effective medium theory for permeability of a ferrite powder embedded in a dielectric. In order to simultaneously treat frequency-dispersive permittivity and permeability of a composite in a full-wave FDTD code, a new algorithm based on discretized auxiliary differential equations has been implemented. In this paper, numerical examples of modeling structures containing different magneto-dielectric mixtures are presented.
Document Type: text
Language: unknown
Relation: https://scholarsmine.mst.edu/ele_comeng_facwork/134; https://doi.org/10.1016/j.jmmm.2008.11.037
DOI: 10.1016/j.jmmm.2008.11.037
Availability: https://scholarsmine.mst.edu/ele_comeng_facwork/134
https://doi.org/10.1016/j.jmmm.2008.11.037
Rights: © 2009 Elsevier, All rights reserved.
Accession Number: edsbas.7026EDDD
Database: BASE
Description
Abstract:An analytical model for a magneto-dielectric composite material is presented based on the Maxwell Garnett rule for a dielectric mixture, and on Bruggeman's effective medium theory for permeability of a ferrite powder embedded in a dielectric. In order to simultaneously treat frequency-dispersive permittivity and permeability of a composite in a full-wave FDTD code, a new algorithm based on discretized auxiliary differential equations has been implemented. In this paper, numerical examples of modeling structures containing different magneto-dielectric mixtures are presented.
DOI:10.1016/j.jmmm.2008.11.037