A Human Body Model Exposed to a Cluster of Waves: A Statistical Study of Sar

Abstract

The impact of wireless channel modeling on exposure to electromagnetic radiation is studied. Two methods are developed in order to assess the statistical properties of whole body Specific Absorption Rate for exposure estimation in indoor environment. The body model is exposed to a bundle of waves, named cluster, following the wireless channel modeling approach. The first method is analytical and based on the Uncorrelated Scattering Assumption of the incident waves. The second method is a classical stochastic method. The point is to identify the parameters of Wireless Channel which led to significant SAR's variation.

Sensitivity analysis of the specular and diffuse parts of clusters multipath on the exposure of a child body model

“…SAR depends on the exposure conditions. The development of expressions of SAR expectation can be found in [2] for one polarization. Based on the fact that each component of the total field absorbed by the body can be split into its random part and its deterministic part, it is possible to apply the US assumption (3).…”

Exposure homogeneity of pharmaceutical materials in reverberation chamber

“…We want to obtain the mean and the standard deviation of the total SARWB. Under Uncorrelated Scattering (US) assumption the result given by [3] …”

Study of Human Exposure Using Kriging Method

“…The conditions of exposure are derived from the cluster model, which is stochastic. Following the same development as in [10], the SAR expectation and its variance can be written as…”

“…Inside each cluster, the angles of incidence and amplitudes of the MPCs follow specific probability distributions. In the framework of the study of people's exposure in complex electromagnetic environments, it is then necessary to expose an anatomical body model to all possible angles of incidence [10]. The computation time in dosimetry is especially long, and it is essential to use an efficient estimation method in order to obtain the corresponding whole body SAR values.…”