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SAR affected by shapes and electrical properties of the human head exposed to a cellular phone
Author(s) -
Chen HsingYi,
Yang HanPeng
Publication year - 2004
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.20189
Subject(s) - human head , specific absorption rate , head (geology) , homogeneous , finite difference time domain method , microwave , absorption (acoustics) , materials science , physics , acoustics , optics , computer science , telecommunications , geology , statistical physics , geomorphology , antenna (radio)
The local maximum specific absorption rate (SAR) induced in spherical, cubical, coarse, and realistic human‐head models exposed to a cellular phone is investigated using the finite‐difference time‐domain (FDTD) method at 900 and 1800 MHz, respectively. These four human‐head models each have greatly different shapes but almost the same volume. Obtained local maximum SARs induced in these four human‐head models for homogeneous cases are found to have an average differences of about 15% and 12% at 900 and 1800 MHz, respectively. A comparison of SARs induced in the realistic human‐head model for homogeneous and inhomogeneous cases is also made. It is found that the local maximum SAR induced in the homogeneous human‐head model is larger than that induced in the inhomogeneous human head model. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 1–4, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20189