NDLI: Practical design method for an electromagnetic wave absorber at 9.45 GHz

Content Provider	IEEE Xplore Digital Library
Author	Ki-Chul Han Wang-Sup Kim Kyung-Yong Kim
Copyright Year	1965
Abstract	A design chart for the fabrication of an electromagnetic wave absorber was constructed. The design chart consists of the matching boundaries, which enclose the complex permeability values satisfying \|/spl Gamma/\|/spl les/0.1. The area inside of the boundary represents over 20 dB attenuation. The secant method was employed to compute the matching boundary values corresponding to 20 dB attenuation. In addition to the matching boundary which is determined by the theoretical equations, several restrictions due to the fabrication process were examined. Based on the study on the effects of the variance of the thickness and permittivity on the electromagnetic wave absorbing characteristics, a means to exclude such effects was also included in the proposed design method. Among the six variables required to construct the design chart, the effect of /spl epsiv//sub r/' was investigated in the range of 5-30 at 9.45 GHz. The effect of /spl epsiv//sub r/" was not considered.<>
Sponsorship	IEEE Magnetics Society
Starting Page	2285
Ending Page	2289
Page Count	5
File Size	437092
File Format	PDF
ISSN	00189464
Volume Number	31
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Design methodology Electromagnetic scattering Permittivity Magnetic materials Impedance Permeability Frequency Fabrication Attenuation Equations
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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