FDTD Simulation of Shielding Effectiveness of Metal-Coated Plastics for Pulsed Electromagnetic Fields

Jianqing WANG  Tetsuji TSUCHIKAWA  Osamu FUJIWARA  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.1   pp.358-363
Publication Date: 2005/01/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.1.358
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Compatibility(EMC)
shielding,  pulsed electromagnetic field,  metal-coated plastic,  FDTD method,  

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The use of metal-coated plastics is increasing as shielding materials of electronic and information products due to their lightweight. In this paper, a finite-difference time-domain (FDTD) algorithm, based on the derivation of a time-domain representation of the surface impedance of an equivalent resistive film, was developed to analyze the electromagnetic penetration of pulsed electromagnetic fields through metal-coated plastics. The validity of the proposed algorithm, in both the far-field and near-field cases, was verified by comparing the calculated penetrated electromagnetic fields or shielding effectiveness with theoretical and measured ones. Good agreement between them demonstrated the usefulness of the FDTD algorithm.