2007
Evaluation of composite electromagnetic wave absorber made of polystyrene resin and permalloy or sendust
ELECTROCERAMICS IN JAPAN X
- ,
- 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
- ID information
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- DOI : 10.4028/www.scientific.net/KEM.350.239
- ISSN : 1013-9826
- Web of Science ID : WOS:000250782100057