E-field distribution modeling in a homogeneous phantom for a rapid SAR measurement

Abstract

Specific absorption rate (SAR) designates the electromagnetic power density deposited per unit mass of biological tissue. SAR measurements are required to assess the compliance of mobile phones with existing standards and recommendations. The use of homogeneous phantoms leads to a relatively simple distribution of the electric field. Several ways of determining the decrease of the electric field in function of depth are here explored. The choice of a pseudopropagation constant allows to drastically reduce the number of E-field measurement points needed for the SAR calculation. The measurement time is then reduced to less than a minute, while the standard way takes about 10 minutes for a complete measurement of almost thousand E-field data points