摘要
在建立手机辐射的电磁模型和分层球型人脑模型基础上,利用时域有限差分法计算了900 MHz频率时单极手机天线作用下人脑内比吸收率的分布,重点讨论了在不同通话情况下手机距人体头部不同距离时人脑中比吸收率的分布情况。计算结果表明:手机距人体头部越近人脑内比吸收率值越大,当戴有金属边框眼镜或在金属壁旁通话时,人脑内比吸收率会有不同程度的增加。
The electromagnetic models of cellular phone and layered human head were established,the specific-absorption-rates (SAR) distribution in human head illuminated by a monopole antenna of handset at the frequency of 900 MHz was calculated by the finite-difference-time-domain(FDTD) method.This paper mainly discussed the SAR distribution in human head according to different distances between cellular phone and human head under different circumstances such as using cellular phone with a pair of metal-frame glasses or next to a metal wall.The calculated results show that the closer the mobile phone is to human head,the higher the value of SAR is.What’s more,the value of SAR in human head will be increased when the person is wearing a pair of metal-frame glasses or is calling next to a metal wall.
出处
《河南科技大学学报(自然科学版)》
CAS
北大核心
2012年第3期25-27,31,共4页
Journal of Henan University of Science And Technology:Natural Science
基金
国家自然科学基金项目(60771034
61172020)
安徽省科研计划基金项目(10021303031)
安徽大学211工程基金项目
安徽大学研究生学术创新基金项目(yqh090071)
关键词
时域有限差分法
手机辐射
比吸收率
FDTD method
Handset radiation
Specific absorption rates