E-field errors associated with RF dosimeters for RF human exposure assessment in urban environments.

In this paper, the potential errors which could be associated with body-worn RF dosimeters have been analyzed in a multipath environment. A statistical analysis of the azimuth power distribution on average in an urban environment has been done by using the two-dimensional ray-tracing technique. The surface electric field on a human body when it impinges with different angles of arrival has been characterized based on the finite-difference time-domain method.

Potential exposure assessment errors associated with body-worn RF dosimeters.

Personal exposure meters for assessing exposure to RF electric or magnetic fields are subject to errors associated with perturbations of the fields by the presence of the human body. Although these alterations are complex they are not completely unpredictable. This article concludes that this error in a common worst-case scenario could reach up to 30 dB and therefore is of concern for exposure assessment.