摘要
随着智能手机的普及,手机电磁辐射对人体健康的影响受到越来越多的关注。针对人体组织结构复杂、媒质不均匀的特点,采用高阶有限元方法对人体进行电磁建模。该方法可以高效、可靠地分析手机天线对人体局部比吸收率(SAR)分布的影响。文中介绍了高阶有限元方法基本理论,并模拟计算了900 MHz频率的PIFA手机作用下均匀介质人头模型的局部比吸收率分布,其结果与商业软件对比,验证了该方法的正确性。最后,在900 MHz的频率下应用高阶有限元法模拟计算了PIFA手机对复杂分层非均匀介质人头局部比吸收率分布的影响,表明了该方法的可行性和可靠性。
The impact of mobile phone’s electromagnetic radiation on human health has received more and more attention, with the popularization of smart phones. Due to the complex structure of human tissues and the lack of media uniform characteristics, we construct electromagnetic model of the human body with higher order finite element method. Such method is able to analyze the phone antenna’s influence on human body’s local specific absorption rate(SAR) efficiently and reliably. In this paper we firstly introduce the basic theory of higher order finite element method, then the local specific absorption rate distribution of the head model with homogeneous medium under the action of PIFA mobile phone at a frequency of 900 MHz is calculated by high order finite element method and compared with commercial software to validate the correctness of this method. Finally, the high order finite element method is applied to simulate the local specific absorption rate distribution of complicated multilayer head model with heterogeneous medium under the action of PIFA mobile phone at 900 MHz, which indicates the feasibility and reliability of the proposed method.
作者
白杨
左胜
张玉
赵勋旺
王楠
BAI Yang;ZUO Sheng;ZHANG Yu;ZHAO Xun-wang;WANG Nan(Shaanxi Key Laboratory of Large Scale Electromagnetic Computing,Xidian University,Xi’an 710071,China)
出处
《微波学报》
CSCD
北大核心
2019年第1期79-82,共4页
Journal of Microwaves
基金
国家重点研发计划(2016YFE0121600)
国家重点研发计划(2017YFB0202102)
中国博士后科学基金(2017M613068)
关键词
高阶有限元方法
比吸收率
平面倒F天线(PIFA)
higher order finite element method
specific absorption rate(SAR)
planar inverted F-shaped antenna(PIFA)
作者简介
白杨,女,1992年生,硕士生。主要研究方向:并行高阶有限元。E-mail:baiyang2611@163.com
