Abstract

Overview

This article examines the effects of electromagnetic (EM) fields on various numerical models of the human head, focusing significantly on the specific absorption rate (SAR) in different environments such as shielded spaces like elevators and open areas.

Findings

• Investigation uses the finite integration method for EM field modeling, with simulations designed around scenarios involving a person using a cell phone in shielded conditions.
• The study uses two human head models, SAM homogenous and AustinMan, to evaluate the SAR values at different distances from a cellular phone emitting at 900 MHz.
• Numerical results indicate higher SAR values inside shielded environments compared to open spaces, suggesting increased EM energy absorption in enclosed spaces due to reflected EM waves.

Conclusion

The findings highlight significant variations in SAR depending on the antenna's distance and placement relative to the human head. Increased SAR levels were observed in shielded environments due to the interference of reflected EM fields with direct waves, which could lead to higher health risks from prolonged exposure, especially in the head regions. This study underscores the potential risks of EM field exposure in shielded scenarios, exemplified by strong mobile phone signals in such areas.