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Author Fukunaga, K. ♦ Watanabe, S. ♦ Yamanaka, Y.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2002
Language English
Subject Keyword Dielectric liquids ♦ Electromagnetic wave absorption ♦ Dielectric measurements ♦ Mobile handsets ♦ Safety ♦ Specific absorption rate ♦ Electromagnetic measurements ♦ Frequency ♦ Stability ♦ Permittivity measurement
Abstract Mobile phone safety has been evaluated by the specific absorption rate (SAR). The measurement method, including recipes for tissue-equivalent dielectric liquids, have been discussed among international organisations. Standard documents currently recommend glycol-type liquids as tissue-equivalent liquids for frequencies above 1 GHz. Although the relative amounts of the ingredients are specified in the recipes provided, possible difficulties relating to the stability of dielectric properties are not clearly described. In this work we measured the time dependence of the dielectric properties of glycol-based dielectric liquids, and evaluated their effects on SAR. The experimental results suggest that relative permittivities decrease with time and that conductivities remain nearly constant. SAR, however, was not affected significantly by the change in dielectric properties.
Description Author affiliation: Commun. Res. Lab., Tokyo, Japan (Fukunaga, K.; Watanabe, S.; Yamanaka, Y.)
ISBN 0780375025
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2002-10-20
Publisher Place Mexico
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 222.02 kB
Page Count 4
Starting Page 75
Ending Page 78

Source: IEEE Xplore Digital Library