NDLI: Microwave characterization of carbonyl Fe/sub 55/Ni/sub 45/ fiber-filled composites

Content Provider	IEEE Xplore Digital Library
Author	Xiang-Cheng Li Rong-Zhou Gong Yan-Fei He Hua-Hui He
Copyright Year	2005
Description	Author affiliation: Dept. of Electron. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China (Xiang-Cheng Li; Rong-Zhou Gong; Yan-Fei He; Hua-Hui He)
Abstract	Fiber-filled composites have the ability of tailoring the electric and magnetic properties and can be suitable for use as microwave lenses, high-strength low weight electromagnetic interference (EMI) shielding materials, radar absorbing materials (RAM), antennas and waveguides, etc. The subject of this paper is to examine the microwave characterization of carbonyl Fe/sub 55/Ni/sub 45/ fiber-filled composites. With the method of the transmission and reflection waveguide, the complex permittivity and permeability of carbonyl Fe/sub 55/Ni/sub 45/ fiber-filled composites in S-band (2-4 GHz) were measured by a vector network analyzer. The reflection loss of these composites was also calculated in this frequency range. The results show that the strong skin effect can decrease the conductivity of fiber and ultimately reduce the effective permittivity of fiber-filled composites. The lower aspect ratio of carbonyl Fe/sub 55/Ni/sub 45/ fiber gives rise to the decrease of the effective magnetic field and the permeability. It was also found that the reflection loss of the composites is influenced more greatly by the low permittivity than that by thickness.
Sponsorship	IEEE Beijing Sect
Starting Page	914
Ending Page	918
File Size	1108146
Page Count	5
File Format	PDF
ISBN	0780391284
DOI	10.1109/MAPE.2005.1618069
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-08
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic waveguides permeability Fiber Electromagnetic Iron Reflection Permeability Composite materials Electromagnetic interference Radar antennas Magnetic materials Optical materials Permittivity Microwave characterization
Content Type	Text
Resource Type	Article

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