Propagation characteristics of ultra-wideband pulse in multilayered human chest tissue

In this paper two major propagation characteristics such as reflection and absorption of Ultra-wideband (UWB) pulse in a human body have been analysed. A simplified multi-layered non-homogenous model of human tissue is considered here. S-parameters and path loss due to transmission of UWB pulse in the multi-layered tissue model are evaluated. Frequency dependent Electromagnetic properties of three layers (skin, fat and muscle) such as permittivity and conductivity of human tissues based on Cole-Cole model are used for the simulations. Specific Absorption rate (SAR), which is directly related to the internal electric field and the conductivity, is computed at a wide band of frequency ranging between 1–5 GHz.