Modeling of ferrite-based materials for shielding enclosures |
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Authors: | Marina Koledintseva James Drewniak James Lenn |
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Institution: | a Missouri University of Science and Technology, Rolla, MO 65409, USA b General Dynamic Land Systems, Sterling Heights, MI, USA |
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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. |
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Keywords: | 51 60+a 41 20 Jb 42 25 Bs 78 66Sq |
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