SAR averaging mass to correlate with temperature elevation due to dipole antenna from 1 to 6 GHz

The present study investigates the relationship between spatial-average specific absorption rate (SAR) and temperature elevation in an anatomically based Japanese head models due to dipole antenna. The frequency region considered is from 1 to 6 GHz. Our attention is paid to the averaging mass of SAR which maximizes the correlation with local temperature elevation. The SAR averaged over 10 g was found to be reasonable to correlate with local temperature elevation even for frequencies above 3 GHz. The dominant factor influencing the correlation between mass-averaged SAR and temperature elevation is suggested to be the thermal diffusion length and the penetration depth of electromagnetic waves.