SA and SAR Analysis for Wearable UWB Body Area Applications
SA and SAR Analysis for Wearable UWB Body Area Applications
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DOI：
10.1587/transcom.e92.b.425
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发表时间：
2009-02
期刊：
影响因子：
--
通讯作者：
Qiong Wang;Jianqing Wang
中科院分区：
文献类型：
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作者：
Qiong Wang;Jianqing Wang
随着电子信息技术的飞速发展，人们对利用超宽带技术实现人体局域网的期望日益高涨。虽然来自单个UWB设备的信号非常低，但是当多个UWB设备同时装饰到人体时，能量吸收可能显著增加。因此，从生物安全性评价的角度来看，需要一种分析方法。在这项研究中，两种方法，一个是在时域和另一个是在频域中，提出了比能量吸收（SA）和比吸收率（SAR）的计算。结果表明，这两种方法具有相同的精度，但时域方法是更直接的数值分析。通过使用时域方法，SA和SAR的计算结果给出了多个UWB脉冲暴露于解剖人体模型下的联邦通信委员会（FCC）UWB限制。
With the rapid progress of electronic and information technology, an expectation for the realization of body area network (BAN) by means of ultra wide band (UWB) techniques has risen. Although the signal from a single UWB device is very low, the energy absorption may increase significantly when many UWB devices are simultaneously adorned to a human body. An analysis method is therefore required from the point of view of biological safety evaluation. In this study, two approaches, one is in the time domain and the other is in the frequency domain, are proposed for the specific energy absorption (SA) and the specific absorption rate (SAR) calculation. It is shown that the two approaches have the same accuracy but the time-domain approach is more straightforward in the numerical analysis. By using the time-domain approach, SA and SAR calculation results are given for multiple UWB pulse exposure to an anatomical human body model under the Federal Communications Commission (FCC) UWB limit.