Summary
International Symposium on Antennas and Propagation
2006
Session Number:2D2a
Session:
Number:2D2a-2
A Formula for Predicting Whole-Body Average SAR in Japanese Models for Far-field Exposures
Akimasa Hirata, Yoshio Nagaya, Osamu Fujiwara, Tomoaki Nagaoka, Soichi Watanabe,
pp.1-4
Publication Date:2006/11/2
Online ISSN:2188-5079
Summary:
Electromagnetic absorption of the human body at the ICNIRP reference level shows the double-humped frequency characteristics: the first peak appears at several tens megahertz where whole-body resonance occurs and the second at 2 GHz, which is caused by an increase of the reference level. The frequency characteristic of whole-body average SAR has not been discussed for realistic models of children. In this study, first, we calculated the whole-body average SAR in Japanese adult and child models for far-field exposure. As a result, we found that calculated peak wholebody average SARs appeared at 2 GHz under the ICNIRP reference level. Whole-body average SAR for the child models were larger than those for the adult models, and exceeded the ICNIRP limit by 30%. Then, we developed a formula for predicting whole-body average SAR from the height and weight of the human models. This formula is based on our finding that the absorption cross-section and body surface area are in excellent correlation.