World-wide diffusion of cellular telephones and the focus of public opinion about the safety of electromagnetic field exposure are forcing international institutes to define test procedures for such devices. Power deposited inside the head by cellular telephones has to be measured in physical phantoms representing a worst case model of the human head. A cubic homogeneous phantom (brain equivalent material and acrylic shell) is suggested together with a test procedure for the evaluation of the maximum SAR averaged over a 10 g cube. FDTD calculations compare the two layer configurations with more realistic conditions to obtain a 'phantom factor' which characterises any effect of the phantom. Water evaporation affects the characteristics of the brain equivalent material; permittivity measurements characterise the evaporation effects and give some indications about phantom maintenance. The measurement set-up and the SAR probe calibration procedure using the thermal power impulse method are described.
|Pages (from-to)||11 - 16|
|Number of pages||6|
|Publication status||Published - 1997|
All Science Journal Classification (ASJC) codes
- Radiology Nuclear Medicine and imaging
- Physics and Astronomy(all)
Guelfi, M., Apollonio, F., Grazioli, N., Nocentini, S., Marrocco, G., & Lovisolo, G. A. (1997). Dosimetric procedures for compliance tests of mobile communication devices. Physica Medica, 13(1), 11 - 16.