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