期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 321, 期 6, 页码 581-585出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2008.09.033
关键词
Electromagnetic interference (EMI); Electromagnetic compatibility (EMC); FeSiCr particle; Microwave absorber; Complex permittivity; Complex permeability
资金
- Soongsil University
The raw materials of FeSiCr were processed in the ball mill for 30 h and the shape of the FeSiCr particles was changed from sphere to. flake type, which was observed using a scanning electron microscope. And FeSiCr composite microwave absorbers were mixed with silicone for mobile phones and the effects of the thickness of the samples on the absorption were measured using a network analyzer in order to investigate the relationship between the microwave absorption and the material constants. The. flake-type FeSiCr-rubber composite showed high reflection loss, which was due to the high complex permittivity and permeability. Also, the matching frequency shifted toward lower frequency range with microwave absorber thickness, and the maximum reflection loss of -8.7 dB was observed in 1.85 GHz for a 1.6 mm thickness. (C) 2008 Elsevier B.V. All rights reserved.
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