An Investigation of Multi-Path Electromagnetic Wave Propagation in Biological Tissue Stack-Ups

Correctly characterizing the power dissipated in the body, and subsequently, specific absorption rate (SAR), is critical for compliance with electromagnetic radiation safety regulations as well as link budget analysis. Before building a system, electromagnetic simulations provide an estimate of the power requirements. However, geometrical simplifications are often necessary to reduce the computational complexity of simulations. This paper investigates the effects of simplifying several tissue layers into a single material for a SAR simulation.