Reduction of Electromagnetic Absorption in the Human Head for Portable Telephones by a Ferrite Sheet Attachment
Summary :
From the standpoint of reducing the electromagnetic (EM) absorption in the human head for portable telephones, a ferrite sheet is proposed to use as a protection attachment between the antenna and the head. By using an anatomically based head model and a realistic portable telephone model, the effects of the ferrite sheet on both the reduction of EM absorption and antenna radiation pattern are numerically analyzed by the finite-difference time-domain (FDTD) method. The results show that a ferrite sheet can result in a reduction over 13% for the spatial peak SAR averaged over one gram of tissue relative to a degradation below 0.6 dB for the antenna radiation pattern.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E80-B No.12 pp.1810-1815
- Publication Date
- 1997/12/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Category
- Electromagnetic Compatibility
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Jianqing WANG, Osamu FUJIWARA, "Reduction of Electromagnetic Absorption in the Human Head for Portable Telephones by a Ferrite Sheet Attachment" in IEICE TRANSACTIONS on Communications,
vol. E80-B, no. 12, pp. 1810-1815, December 1997, doi: .
Abstract: From the standpoint of reducing the electromagnetic (EM) absorption in the human head for portable telephones, a ferrite sheet is proposed to use as a protection attachment between the antenna and the head. By using an anatomically based head model and a realistic portable telephone model, the effects of the ferrite sheet on both the reduction of EM absorption and antenna radiation pattern are numerically analyzed by the finite-difference time-domain (FDTD) method. The results show that a ferrite sheet can result in a reduction over 13% for the spatial peak SAR averaged over one gram of tissue relative to a degradation below 0.6 dB for the antenna radiation pattern.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e80-b_12_1810/_p
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@ARTICLE{e80-b_12_1810,
author={Jianqing WANG, Osamu FUJIWARA, },
journal={IEICE TRANSACTIONS on Communications},
title={Reduction of Electromagnetic Absorption in the Human Head for Portable Telephones by a Ferrite Sheet Attachment},
year={1997},
volume={E80-B},
number={12},
pages={1810-1815},
abstract={From the standpoint of reducing the electromagnetic (EM) absorption in the human head for portable telephones, a ferrite sheet is proposed to use as a protection attachment between the antenna and the head. By using an anatomically based head model and a realistic portable telephone model, the effects of the ferrite sheet on both the reduction of EM absorption and antenna radiation pattern are numerically analyzed by the finite-difference time-domain (FDTD) method. The results show that a ferrite sheet can result in a reduction over 13% for the spatial peak SAR averaged over one gram of tissue relative to a degradation below 0.6 dB for the antenna radiation pattern.},
keywords={},
doi={},
ISSN={},
month={December},}
Copy
TY - JOUR
TI - Reduction of Electromagnetic Absorption in the Human Head for Portable Telephones by a Ferrite Sheet Attachment
T2 - IEICE TRANSACTIONS on Communications
SP - 1810
EP - 1815
AU - Jianqing WANG
AU - Osamu FUJIWARA
PY - 1997
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E80-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 1997
AB - From the standpoint of reducing the electromagnetic (EM) absorption in the human head for portable telephones, a ferrite sheet is proposed to use as a protection attachment between the antenna and the head. By using an anatomically based head model and a realistic portable telephone model, the effects of the ferrite sheet on both the reduction of EM absorption and antenna radiation pattern are numerically analyzed by the finite-difference time-domain (FDTD) method. The results show that a ferrite sheet can result in a reduction over 13% for the spatial peak SAR averaged over one gram of tissue relative to a degradation below 0.6 dB for the antenna radiation pattern.
ER -
English
