Abstract
Scaled models for an anatomical head model and a simple head model are used to investigate the effects of head size on specific absorption rate (SAR) characteristics for two mobile phones operating at 835 MHz and 1765 MHz, respectively. From the results, we can see that a larger head produces a higher localized SAR and a lower whole-head averaged SAR. However, at 1765 MHz, the differences among the head models were insignificant, since the superficial absorption is dominant compared with the effect of outer shape of heads. A larger head produces a lower whole-head averaged SAR, at both frequencies.
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