Realizing Highly Localized Exposure in Small Animals with Absorbing Material Covered Holder to Test Biological Effects of 1.5GHz Cellular Telephones

Jianqing WANG  Osamu FUJIWARA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E86-B   No.5   pp.1660-1665
Publication Date: 2003/05/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electromagnetic Compatibility(EMC)
Keyword: 
bio-electromagnetic environment,  cellular telephone,  animal experiment,  exposure setup,  absorbing material,  

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Summary: 
In testing the possible biological effects of electromagnetic exposure from cellular telephones in small animals such as mice, it is essential to realize a highly localized head exposure as close as possible to that due to cellular telephones in humans. In this study, a 1.5GHz exposure setup was developed which has a highly localized specific absorption rate (SAR) of 2W/kg in the mouse brain and a low whole-body averaged SAR of 0.27W/kg. The low whole-body averaged SAR was realized by using a flexible magnetic sheet attachment on the mouse holder. Its validity has been carefully examined by both numerical simulation with an anatomically based mouse model and experimental simulation with a solid mouse phantom. Good agreement was obtained between the numerical and experimental results, which confirmed the effectiveness of the magnetic sheet attachment to the mouse holder.