Effect of SAR on human head modeling inside cylindrical enclosures
Effect of SAR on human head modeling inside cylindrical enclosures
复制标题
SAR 对圆柱形外壳内人体头部建模的影响
DOI：
10.3109/15368378.2012.728551
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发表时间：
2013
影响因子：
1.7
通讯作者：
C. Ravichandran
中科院分区：
文献类型：
--
作者：
T. A. J. Mary;C. Ravichandran
本研究旨在讨论一种现实的方法来确定和分析射频对圆柱形外壳内人体暴露的影响。在圆柱形外壳内使用在全球移动通信系统 (GSM) 频段 (900 MHz) 运行的具有倒 F 天线 (IFA) 的移动电话的场景。众所周知，金属外壳具有共振和反射效应，从而增加电场强度，从而导致人体暴露于电磁吸收的变化。因此，本研究检查并比较了不同条件下的比吸收率 (SAR) 值的吸收水平。在这项研究中，设计了具有介电特性的人体模型，并在全封闭的圆柱形外壳内研究了其与 IFA 的相互作用。结果表明，与自由空间相比，圆柱形外壳内的 SAR 值有所增加。计算方法采用矩量法。模拟是在 FEKO 软件中完成的。
This study intends to discuss enclosed a realistic approach to determine and analyze the effects of radio frequency on human exposure inside a cylindrical enclosure. A scenario in which a mobile phone with inverted-F antenna (IFA) operating in the Global System for Mobile Communication (GSM) band (900 MHz) is used inside a cylindrical enclosure. Metallic enclosures are known to have resonance and reflection effects, thereby increasing electric field strength and hence resulting in a change of the human exposure to electromagnetic absorptions. So, this study examines and compares the levels of absorption in terms of specific absorption rate (SAR) values under various conditions. In this study, a human phantom with dielectric properties is designed and its interaction is studied with IFA inside fully enclosed cylindrical enclosures. The results show that SAR values are increased inside cylindrical enclosures compared with those in free space. The method of computation uses method of moments. Simulations are done in FEKO software.