An Efficient Stochastic Modeling of Transmitted Power Density in Two-layered Planar Tissue Exposed to Incident Plane Wave

The paper presents the stochastic analysis of the transmitted power density (TPD) in a two-layered planar tissue model (skin+fat and skin+muscle), exposed to a plane wave incidence at 10, 30 and 90 GHz. Electric field, specific absorption rate (SAR) and TPD are computed analytically. Furthermore, tissues’ permittivities and conductivities are modelled as uniformly distributed random variables. Uncertainty from the input parameter set is propagated to output electric field, SAR and TPD by means of stochastic collocation method. Stochastic mean and confidence intervals for output parameters are computed. Additionally, ANOVA sensitivity analysis is carried out thus evaluating the impact of the input parameters’ variations on TPD confidence interval width.