Representation of Gyromagnetic Composite Media for FDTD Modeling

Marina Koledintseva, Missouri University of Science and Technology
James L. Drewniak, Missouri University of Science and Technology
Xiaoning Ye

This document has been relocated to http://scholarsmine.mst.edu/ele_comeng_facwork/1866

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Abstract

A composite media containing particles with a high internal field of magnetic anisotropy (hexagonal ferrites) useful for numerous EMC applications in a wide frequency band is considered. Effective constitutive parameters of a high-loss composite gyromagnetic media are represented in the Lorentzian form. It is convenient for the numerical analysis using the finite-difference time-domain (FDTD) algorithm with a recursive convolution procedure. The equations for the electric and magnetic field updating in such media are represented.