Papers

2007

Evaluation of composite electromagnetic wave absorber made of polystyrene resin and permalloy or sendust

ELECTROCERAMICS IN JAPAN X
  • Kenji Sakai
  • ,
  • Shinzo Yoshikado

Volume
350
Number
First page
239
Last page
+
Language
English
Publishing type
Research paper (international conference proceedings)
DOI
10.4028/www.scientific.net/KEM.350.239
Publisher
TRANS TECH PUBLICATIONS LTD

The frequency dependences of the complex permeability mu(r)*, complex permittivity epsilon(r)*, and return loss were investigated for composite electromagnetic wave absorbers made of soft magnetic materials (permalloy or sendust) and polystyrene resin. For permalloy, two types of particle shape were used: grain-type or flake-type. The volume mixture ratio of magnetic materials was varied in the range from 40 % to 70 %. The values of the real part mu' and imaginary part mu" of mu(r)* increased with increasing mixture ratio of magnetic materials. The frequency dependence of mu(r)* for flake-type permalloy composite was similar to that for sendust composite. All absorbers showed the absorption of electromagnetic waves in the frequency range above 1 GHz.

Link information
DOI
https://doi.org/10.4028/www.scientific.net/KEM.350.239
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000250782100057&DestApp=WOS_CPL
ID information
  • DOI : 10.4028/www.scientific.net/KEM.350.239
  • ISSN : 1013-9826
  • Web of Science ID : WOS:000250782100057

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