利用FDTD方法比较手提电话天线的方向图,输入阻抗及人头部的比吸收率(SAR)(英文)

Antenna Patterns & Input Impedances of Handset Antennas and SARs in Human Head:A Comparative Study Using FDTD

本文给出了利用FDTD电磁模拟方法对常用的五种个人通信手提电话的天线和人头部组织相互作用的比较研究。在研究中考虑的蜂窝通信手提电话常用的天线种类为单极子、偶极子和倒F型（IFA）天线。不均匀的实际人头模型被用于预测天线特性（包括输入阻抗，方向图和辐射效率等）和对操作作者耦合的电磁效应。天线在人头部的潜在危险影响是用1W辐射功率在人组织产生的比吸收率（SAR）来评估。

This paper presents a comparative study of the interactions between five commercial handset antennas and human-head tissue in personal communications using the finite-difference timedomain (FDTD) electromagnetic simulation approach. Various antennas used for cellular phones such as the monopole, dipole and inverted-F antennas (IFA). have been considered in the investigation. A heterogeneous and realistic head model has been utilized to predict the effects of EM coupling to a human operator on the antenna characteristics, such as input impedance, radiation patterns, and radiation efficiency. The potential hazards posed by the antennas on the human head have also been addressed by examining the specific absorption rate (SAR) in the human tissue for 1 W of power radiated.