华南理工大学学报(自然科学版) ›› 2003, Vol. 31 ›› Issue (12): 5-8.

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单极手机与分层人头模型作用系统的数值模拟

周晓明 赖声礼   

  1. 华南理工大学 电子与信息学院,广东 广州510640
  • 出版日期:2003-12-20 发布日期:2022-06-24
  • 作者简介:周晓明(1963-)‚男‚副教授‚在职博士生‚主要从事电磁场数值计算和生物电磁效应研究.
  • 基金资助:
    国家自然科学基金资助项目(60071033);广东 省科技厅社会发展攻关项目(2002C30202)

Numerical Simulation of Interaction System Between Monopole Handset and Layered Human Head Model

Zhou Xiao-ming Lai Sheng-Li   

  1. College of Electronic and Information Engineering‚South China Univ.of Tech.‚Guangzhou510640‚China
  • Online:2003-12-20 Published:2022-06-24

摘要: 采用三层球形人头模型‚在900MHz 的频率下应用时域有限差分(FDTD)法模 拟计算了单极天线手机作用下人头内的比吸收率分布.通过与实验结果的对比‚验证了计 算方法的有效性.计算结果表明:天线越短‚比吸收率(SAR)和功率吸收比越大‚人头吸收 手机辐射能量越多‚吸收可达一半以上;未成年人人头模型的 SAR 峰值及其平均值均大 于成人人头模型‚λ/4天线长度下未成年人平均 SAR(0.112 W/kg)超出 IEEC95.1— 1991规定的安全限量(0.08W/kg)‚可见手机辐射对青少年用户造成的危害更大.

关键词: 手机辐射, 时域有限差分法, 单极天线

Abstract: The SAR(Specific Absorption Rates)distribution in human head emitted by a monopole antenna handset was simulated using the finite-difference-time-domain (FDTD) method with a three-layered human head model at the frequency of900MHz.The feasibility of the calculating method was proved by the comparison with experimental results.The calculated results show that SAR and the absorption rate of power increase when reducing the length of antenna‚and the absorption energy can be more above half of the total radiation energy.The peak and the average SARs of teenager are more than those of adult in the human head model.The average SAR (0.112W/kg) of teenager exceeds the IEEC95.1— 1991limit (0.08W/kg) when the monopole length is λ/4‚which means the harm of handset radiation to teenagers is more serious than that to adults.

Key words: handset radiation, finite-difference-time-domain method, monopole antenna

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