Hossain M I, Faruque M R I, Islam M T
Center for Space Science (ANGKASA), Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia.
Center for Space Science (ANGKASA), Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia.
Prog Biophys Mol Biol. 2015 Nov;119(2):103-10. doi: 10.1016/j.pbiomolbio.2015.03.008. Epub 2015 Apr 9.
The aim of this paper is to investigate the effects of the distances between the human head and internal cellular device antenna on the specific absorption rate (SAR). This paper also analyzes the effects of inclination angles between user head and mobile terminal antenna on SAR values. The effects of the metal-glass casing of mobile phone on the SAR values were observed in the vicinity of the human head model. Moreover, the return losses were investigated in all cases to mark antenna performance. This analysis was performed by adopting finite-difference time-domain (FDTD) method on Computer Simulation Technology (CST) Microwave Studio. The results indicate that by increasing the distance between the user head and antenna, SAR values are decreased. But the increase in inclination angle does not reduce SAR values in all cases. Additionally, this investigation provides some useful indication for future design of low SAR mobile terminal antenna.
本文旨在研究人体头部与内置蜂窝设备天线之间的距离对比吸收率（SAR）的影响。本文还分析了用户头部与移动终端天线之间的倾斜角度对SAR值的影响。在人体头部模型附近观察了手机金属玻璃外壳对SAR值的影响。此外，在所有情况下都对回波损耗进行了研究，以评估天线性能。该分析是在计算机模拟技术（CST）微波工作室中采用时域有限差分（FDTD）方法进行的。结果表明，通过增加用户头部与天线之间的距离，SAR值会降低。但倾斜角度的增加并非在所有情况下都会降低SAR值。此外，该研究为低SAR移动终端天线的未来设计提供了一些有用的参考。
