NDLI: Dependence of microwave absorbing property on ferrite volume fraction in MnZn ferrite-rubber composites

Content Provider	IEEE Xplore Digital Library
Author	Kim, D.Y. Chung, Y.C. Kang, T.W. Kim, H.C.
Copyright Year	1965
Abstract	The effective complex permeability and permittivity spectra in composites with various ferrite volume fractions were calculated using the Bruggeman effective medium theory. The matching conditions for the maximum microwave absorption were determined by substituting the complex permeability and permittivity in the equation for the impedance matching condition. The minimum reflection loss increases from -5 to -40 dB as the ferrite volume fraction increases for /spl nu//sub f/<0.26, where single dip of minimum reflection loss was observed. However, two matching conditions were observed for v/sub f//spl ges/0.26, and two minimum reflection losses shown to be about -40 dB. The results indicate that a microwave absorber with reflection loss of about -40 dB can be designed by controlling the ferrite volume fraction in MnZn ferrite-rubber composites in the frequency range 0.8-12 GHz.
Sponsorship	IEEE Magnetics Society
Starting Page	555
Ending Page	558
Page Count	4
File Size	417094
File Format	PDF
ISSN	00189464
Volume Number	32
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ferrites Permeability Permittivity Optical reflection Impedance matching Composite materials Magnetic materials Rubber Electromagnetic reflection Frequency
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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