摘要
利用时域有限差分(FDTD)法分析了耳机引线对手机天线辐射近场的影响。介绍了FDTD法的计算模型,并验证了方法的可靠性。在此基础上,对不同耳机模型和耳机引线处于不同位置时手机天线的辐射场强分布进行了计算。计算结果显示,使用手机耳机可以有效减小手机天线对人脑的辐射。
The near-zone field of the handset with an earphone is calculated by the finite-difference time-domain (FDTD) method. A calculating model of FDTD method is presented and checked with available results. The radiation field distributions of different earphone wire models and the effect of earphone's position on the field distribution are simulated and analyzed. The obtained results demonstrate that using an earphone instead of putting the handset to the ear directly can reduce the electrical power absorbed by the person's head effectively.
出处
《电波科学学报》
EI
CSCD
北大核心
2005年第2期231-235,共5页
Chinese Journal of Radio Science
基金
教育部新世纪优秀人才支持计划
优秀青年教师资助计划资助
关键词
时域有限差分法
耳机引线
手机天线
辐射
Calculations
Earphones
Finite difference method
Radiation
Time domain analysis
