Dosimetry of Local Radio Frequency Exposure

Sammanfattning: Finite-difference time-domain (FDTD) is a popularcomputational electrodynamics modelling technique. It has been widelyused, from radar cross section computations through electromagneticcompatibility investigations to modelling of electromagnetic exposurein biological tissues. This thesis is dealing with method development for FDTD modelling ofelectromagnetic exposure in biological tissues. Realistic models ofrats and human head are used to evaluate specific absorption rate(SAR) distribution from electromagnetic field (EM) exposure in theradio frequency (RF) spectrum of mobile phone radiation. A newdetailed model of the inner ear labyrinth has been reconstructed fromcomputer tomography (CT) images and inserted into the head model. Anew stable subgridding technique has been developed and used in themodelling of local exposure in the inner ear exposed to mobile phoneradiation. The evaluations are performed in the context of SARdistributions inside the anatomical models for the two Global Systemfor Mobile Communications (GSM) bands, GSM-900 and GSM-1800.