Modeling of ferrite-based materials for shielding enclosures

被引：30

作者：

Koledintseva, Marina ^{[1
]}

Drewniak, James ^{[1
]}

Zhang, Yaojiang ^{[1
]}

Lenn, James ^{[2
]}

Thoms, Melanie ^{[2
]}

机构：

[1] Missouri Univ Sci & Technol, Rolla, MO 65409 USA

[2] Gen Dynam Land Syst, Sterling Hts, MI USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 07期

关键词：

Shielding effectiveness (SE); Magneto-dielectric composites; Microwave permittivity and permeability; FDTD technique; Maxwell Garnett and Bruggeman formulations; FREQUENCY DISPERSION; COMPLEX PERMEABILITY; ZN;

D O I：

10.1016/j.jmmm.2008.11.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：730 / 733

页数：4

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