Variability of Specific Absorption Rate of Human Body for Various Configurations of Tablet Computer in Vicinity of Abdomen
Summary :
With the development and diverse use of wireless radio terminals, it is necessary to estimate the specific absorption rate (SAR) of the human body from such devices under various exposure situations. In particular, tablet computers may be used for a long time while placed near the abdomen. There has been insufficient evaluation of the SAR for the human body from tablet computers. Therefore, we investigated the SAR of various configurations of a commercial tablet computer using a numerical model with the anatomical structures of Japanese males and females, respectively. We find that the 10-g-averaged SAR of the tablet computer is strongly altered by the tablet's orientation, i.e., from -7.3dB to -22.6dB. When the tablet computer is moved parallel to the height direction, the relative standard deviations of the 10-g averaged SAR for the male and female models are within 40%. In addition, those for the different tilts of the computer are within 20%. The fluctuations of the 10-g-averaged SAR for the seated human models are within ±1.5dB in all cases.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E98-B No.7 pp.1173-1181
- Publication Date
- 2015/07/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E98.B.1173
- Type of Manuscript
- Special Section PAPER (Special Section on Electromagnetic Compatibility Technology in Conjunction with Main Topics of EMC'14/Tokyo)
- Category
Authors
Akihiro TATENO
Chiba University
Tomoaki NAGAOKA
National Institute of Information and Communications Technology
Kazuyuki SAITO
Chiba University
Soichi WATANABE
National Institute of Information and Communications Technology
Masaharu TAKAHASHI
Chiba University
Koichi ITO
Chiba University
Keyword
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Akihiro TATENO, Tomoaki NAGAOKA, Kazuyuki SAITO, Soichi WATANABE, Masaharu TAKAHASHI, Koichi ITO, "Variability of Specific Absorption Rate of Human Body for Various Configurations of Tablet Computer in Vicinity of Abdomen" in IEICE TRANSACTIONS on Communications,
vol. E98-B, no. 7, pp. 1173-1181, July 2015, doi: 10.1587/transcom.E98.B.1173.
Abstract: With the development and diverse use of wireless radio terminals, it is necessary to estimate the specific absorption rate (SAR) of the human body from such devices under various exposure situations. In particular, tablet computers may be used for a long time while placed near the abdomen. There has been insufficient evaluation of the SAR for the human body from tablet computers. Therefore, we investigated the SAR of various configurations of a commercial tablet computer using a numerical model with the anatomical structures of Japanese males and females, respectively. We find that the 10-g-averaged SAR of the tablet computer is strongly altered by the tablet's orientation, i.e., from -7.3dB to -22.6dB. When the tablet computer is moved parallel to the height direction, the relative standard deviations of the 10-g averaged SAR for the male and female models are within 40%. In addition, those for the different tilts of the computer are within 20%. The fluctuations of the 10-g-averaged SAR for the seated human models are within ±1.5dB in all cases.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E98.B.1173/_p
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@ARTICLE{e98-b_7_1173,
author={Akihiro TATENO, Tomoaki NAGAOKA, Kazuyuki SAITO, Soichi WATANABE, Masaharu TAKAHASHI, Koichi ITO, },
journal={IEICE TRANSACTIONS on Communications},
title={Variability of Specific Absorption Rate of Human Body for Various Configurations of Tablet Computer in Vicinity of Abdomen},
year={2015},
volume={E98-B},
number={7},
pages={1173-1181},
abstract={With the development and diverse use of wireless radio terminals, it is necessary to estimate the specific absorption rate (SAR) of the human body from such devices under various exposure situations. In particular, tablet computers may be used for a long time while placed near the abdomen. There has been insufficient evaluation of the SAR for the human body from tablet computers. Therefore, we investigated the SAR of various configurations of a commercial tablet computer using a numerical model with the anatomical structures of Japanese males and females, respectively. We find that the 10-g-averaged SAR of the tablet computer is strongly altered by the tablet's orientation, i.e., from -7.3dB to -22.6dB. When the tablet computer is moved parallel to the height direction, the relative standard deviations of the 10-g averaged SAR for the male and female models are within 40%. In addition, those for the different tilts of the computer are within 20%. The fluctuations of the 10-g-averaged SAR for the seated human models are within ±1.5dB in all cases.},
keywords={},
doi={10.1587/transcom.E98.B.1173},
ISSN={1745-1345},
month={July},}
Copy
TY - JOUR
TI - Variability of Specific Absorption Rate of Human Body for Various Configurations of Tablet Computer in Vicinity of Abdomen
T2 - IEICE TRANSACTIONS on Communications
SP - 1173
EP - 1181
AU - Akihiro TATENO
AU - Tomoaki NAGAOKA
AU - Kazuyuki SAITO
AU - Soichi WATANABE
AU - Masaharu TAKAHASHI
AU - Koichi ITO
PY - 2015
DO - 10.1587/transcom.E98.B.1173
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E98-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2015
AB - With the development and diverse use of wireless radio terminals, it is necessary to estimate the specific absorption rate (SAR) of the human body from such devices under various exposure situations. In particular, tablet computers may be used for a long time while placed near the abdomen. There has been insufficient evaluation of the SAR for the human body from tablet computers. Therefore, we investigated the SAR of various configurations of a commercial tablet computer using a numerical model with the anatomical structures of Japanese males and females, respectively. We find that the 10-g-averaged SAR of the tablet computer is strongly altered by the tablet's orientation, i.e., from -7.3dB to -22.6dB. When the tablet computer is moved parallel to the height direction, the relative standard deviations of the 10-g averaged SAR for the male and female models are within 40%. In addition, those for the different tilts of the computer are within 20%. The fluctuations of the 10-g-averaged SAR for the seated human models are within ±1.5dB in all cases.
ER -
English
