Antennas and health aspects of electromagnetic feilds in the near-field region
conference paper
The increase of telecommunication applications such as mobile phones gives rise to concerns about possible health risks caused by the emitted Radio Frequency Radiation (RFR). In order to evaluate possible health risks one refers to RFR exposure limits where the specific absorption rate (SAR) is used as the basic restriction on the thermal effects, Determining compliance with exposure limits, derived quantities such as electric and magnetic field strength are calculated or measured. These values are valid for plane wave conditions. Generally, this approach is sufficient. However, in cases where plane wave conditions are not valid, compliance with the basic restrictions has to be shown. Computational models for solving electromagnefic field interaction problems give a solution approach. fn this paper a study on an approach to combine an electromagnetic and a thermal model is reported. For the case of near field interaction by a hand-held mobile phone the proof of concept to establish the link between the SAR and the temperature distribution is given. By using this method it is possible to show compatibility with the basic restrictions as well as to design new safety standards.
TNO Identifier
95516
Publisher
TNO
Source title
Proceedings of the 2nd European workshop on conformal antennas, 24-25 April 2001, held at TNO-FEL
Editor(s)
Visser, H.J.
Place of publication
The Hague
Pages
4 p.
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