Specific Absorption Rate Evaluation in Layered Human Head Models Using Transparent Conducting Film

Abstract

The electromagnetic shielding effectiveness (ESE) of two human head models (HMs) of seven tissues; skin, fat, bone, dura, cerebrospinal fluid (CSF), gray matter (GM), and white Matter (WM) is evaluated. The effect of mobile phone position (MPP) on the RF absorption is modelled in this work. The simulation of ESE of HMs is performed using the Transmission Line Method: in the mobile position absence with oblique angle of incidence (OAI) variation for transverse electric and transverse magnetic polarization (TEP), (TMP); and in the mobile position presence and polarization. Also, repeating the same procedure by transparent silver nanowire Ag-NW/Poly(diallyl dimethylammonium chloride) (PDDA) as with nickel (Ni) lamination forming a laminated shield incorporation. Specific absorption rate (SAR), a radiation absorption metric, is estimated at 3.6 GHz from the obtained ESE for the age-dependent HMs. Out of both the adult and child HMs, a higher SAR is absorbed by the child HM, of about 2.39E−6 W/kg at 30° mobile phone tilt for TEP.