Bio Effects

Technical aspects of possible biological effects of mobile phones are studied. Under the assumption that only power density (SAR values) and time variation of the SAR value have biological relevance new systems like W-CDMA for UMTS have been studied. In contrast to the burst mode of GSM TDMA where the repetitive 217 Hz is present, new timing features related to power control are present. In addition the modulation is no longer constant envelope, which leads to a new type of high frequency modulation of the power. A report has been written for the GSM Association [J. Bach Andersen, Preben Mogensen, Gert Frølund Pedersen, 2001]. CPK is a member of COST 281, Potential Health Implications from Mobile Communication Systems. (Jørgen Bach Andersen, Gert Frølund Pedersen, Preben Mogensen)