华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (7): 135-137,146.

• 物理 • 上一篇    下一篇

左手材料SRR在手机辐射防护中的作用

周晓明   

  1. 华南理工大学 理学院, 广东 广州 510640
  • 收稿日期:2008-03-19 修回日期:1900-01-01 出版日期:2009-07-25 发布日期:2009-07-25
  • 通信作者: 周晓明(1963-),男,教授,博士,主要从事电磁场数值计算和生物电磁效应研究. E-mail:zh。uxm@scut.edu.cn
  • 作者简介:周晓明(1963-),男,教授,博士,主要从事电磁场数值计算和生物电磁效应研究.
  • 基金资助:

    广东省自然科学基金资助项目(06025716);华南理工大学自然科学基金资助项目(123E5040920)

Radioprotective Role of Left-Handed Materials SRRs in Cellular Phone

Zhou Xiao-ming   

  1. School of Science, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-03-19 Revised:1900-01-01 Online:2009-07-25 Published:2009-07-25
  • Contact: 周晓明(1963-),男,教授,博士,主要从事电磁场数值计算和生物电磁效应研究. E-mail:zh。uxm@scut.edu.cn
  • About author:周晓明(1963-),男,教授,博士,主要从事电磁场数值计算和生物电磁效应研究.
  • Supported by:

    广东省自然科学基金资助项目(06025716);华南理工大学自然科学基金资助项目(123E5040920)

摘要: 通过建立开口环状谐振器(SRR)手机与人体相互作用系统的数值仿真模型,应用时域有限差分法计算人体内辐射剂量的比吸收率(SAR)值,并由天线方向性图分析SRR对手机通信质量的影响,研究了左手材料SRR对减少手机电磁辐射的防护效果.结果表明,在手机中置入SRR后,每克和每l0克人体生物组织的平均SAR峰值降幅在50%以上,而辐射场强度最大降幅不超出10dB.说明使用左手材料SRR可以明显降低手机对人体造成的辐射危害,对手机通信性能的影响在可接受的范围内。

关键词: 左手材料, 开口环状谐振器, 手机辐射, 比吸收率

Abstract:

In order to investigate the radioprotective role of left-handed materials-split ring resonators ( SRRs)in reducing the electromagnetic radiation from a cellular phone, a numerical simulation model of the interaction system between cellular phone with SRRs and human body is established, and the specific absorption rate (SAR) of radiation dosage in human body is calculated by means of finite-difference time-domain (FDTD) method. Moreover, the influence of SRRs on the communication quality of cellular phone is analyzed by using antenna radiation patterns. The results indicate that, by using SRRs, the average SAR peak values per 1 g and 10g human tissues decrease by more than 50%, and the radiation intensity decreases by less than 10dB. It is thus concluded that SRRs markedly reduce the harm to human body caused by cellular phone radiation, and its influence on communication quality keeps in an acceptable range.

Key words: left-handed material, split ring resonator, mobile radiation, specific absorption rate