Uncertainty of the One-Gram Averaged Spatial Peak SAR in Human Head for Portables Telephones due to Average Procedures
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- Wang Jianqing
- Nagoya Institute of Technology
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- Joukou Takahiro
- Nagoya Institute of Technology
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- Fujiwara Osamu
- Nagoya Institute of Technology
書誌事項
- タイトル別名
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- Uncertainty of the One-Gram Averaged Spatial Peak SAR in Human Head for Portable Telephones due to Average Procedures
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The U. S. Federal Communication Commission (FCC) has required the routine specific absorption rate (SAR) evaluation of portable telephones since 1997. The applicable SAR limit is 1.6W/kg as averaged over any one gram of tissue, defined as a tissue volume in the shape of a cube. Because of the irregular surface of the human head and tissue heterogeneity, computing the one-gram averaged spatial peak SAR in the shape of a cube is not so easy. A lack of standardized procedure for computing the one-gram averaged spatial peak SAR is resulting in confusion in the SAR assessment. In this paper, the SAR in an anatomically based human head model is computed using the finite-difference time-domain (FDTD) method, and the uncertainties of different four kinds of one-gram average procedures are evaluated numerically. The results show that an uncertainty up to 2.4 times may exists at 900 MHz. A nearly 1×1×1 cm cube with a mass of just one gram, but not containing the air cells, seems to be reasonable for the one-gram average of SARs.
収録刊行物
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- 電気学会論文誌Ｃ（電子・情報・システム部門誌）
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電気学会論文誌Ｃ（電子・情報・システム部門誌） 119 (1), 2-8, 1999
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390282679585112448
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- NII論文ID
- 130006844164
- 10002815836
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- NII書誌ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL書誌ID
- 971195
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 使用不可