Radiation Impact Of A Mobile Phone On The Human Brain And An Effective Solution

In this thesis, firstly, the performance of a dual-band antenna in a mobile terminal has beenstudied and the details of the antenna have been configured, the overall impact on the mobile andcontribution to the electromagnetic distribution of various components including ground plan, shelland support have been analyzed, different material properties of various components have beencarried out in different cases; the final test has been used to validate numerical simulations, whichshows the feasibility of the specific design of the antenna.Secondly, in order to study the radiation impact on the human body, the specific absorption ratehas been calculated in the presence of the human head. Further, calculation of the specific absorptionrate has been completed with the influence of the human hand in different postures; consequently,several recommendations have been given according to certain laws which have been found in thenumerical simulations.In order to reduce the electromagnetic radiation to the human brain, this thesis presents anumerical adaptive filter for blind equalization in base stations while receiving signals. Theasynchronous signals will be synchronized and recombined through two different modes, thusensuring the factors which significantly reduce the performance of the communication system such astime delay, phase shift and amplitude attenuation can be eliminated, the constellation of quadraturephase shift keying has been optimized. A detailed mathematical model design of the adaptive filter hasbeen established. After equalization, while keeping the gain of signal to noise ratio, theelectromagnetic radiation power from the mobile terminal can be reduced by3dB. Therefore, wesucceed in reducing cell phone radiation damage to the human brain while maintaining the quality ofthe communication system.All research described in this thesis will have certain significance on the design of the antennaand the optimization of the channel and base stations.