Correlation between peak spatial-average SAR and temperature increase due to antennas attached to human trunk
Correlation between peak spatial-average SAR and temperature increase due to antennas attached to human trunk
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DOI：
10.1109/tbme.2006.877798
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发表时间：
2006-08-01
影响因子：
4.6
通讯作者：
Shiozawa, Toshiyuki
中科院分区：
文献类型：
--
作者：
Hirata, Akimasa;Fujiwara, Osamu;Shiozawa, Toshiyuki
本文讨论了峰值空间平均比吸收率（SAR）和最大温升之间的相关性天线附着在人体躯干。所考虑的频带为150、400和900 MHz，这些频带被分配用于职业通信。借助于绿色函数，对这一问题进行了深入的研究。特别地，利用一维模型揭示了热常数变化对温升的影响。计算结果表明，影响峰值SAR和最大温升之间相关性的最主要因素之一是组织中的血流。这是通过考虑三维逼真的人体模型来证实的。还量化了由峰值SAR的计算引起的不均匀性和身体模型形状的差异。
This paper discusses the correlation between peak spatial-average specific absorption rate (SAR) and maximum temperature increase for antennas attached to the human trunk. Frequency bands considered are 150, 400, and 900 MHz, which are assigned for occupational communications. This problem is throughly investigated with the aid of Green's function. In particular, the effect of variation of thermal constants on the temperature increase is revealed by using one-dimensional model. Computational results suggests that one of the most dominant factors which affect the correlation between peak SAR and maximum temperature increase is blood flow in tissues. This is confirmed by considering a three-dimensional realistic human body model. Uncertainties caused by the calculation of peak SAR and the difference in the body model shape are also quantified.