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One novel dielectric conformal flnite-difierence time- domain (FDTD) method is used for computing speciflc absorption rate (SAR) distribution over the human body model in one metallic cabin with some windows on its wall. It is based on the concept of area average, which is difierent from other traditional conformal FDTD schemes. Our developed algorithm is verifled by calculating both point and average SARs of dielectric sphere and human head models illuminated by an intentional electromagnetic pulse (IEMP), respectively, and CST Microwave Studio (MWS) also used for validating its accuracy. Numerical calculations are further performed to show the average SAR distribution over the human body model for difierent IEMP incidences, where the cabin door is opened or closed. The efiects of E-fleld amplitude, direction and polarization of the incident IEMP on the SAR distributions are characterized in detail. This study will be useful for further electromagnetic protection for some persons working in high power exposure environment.

electromagnetic waves

A NOVEL DIELECTRIC CONFORMAL FDTD METHOD FOR COMPUTING SAR DISTRIBUTION OF THE HUMAN BODY IN A METALLIC CABIN ILLUMINATED BY AN INTENTIONAL ELECTROMAGNETIC PULSE (IEMP)