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
收藏
页码：730 / 733
页数：4
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