Age-dependence of electromagnetic power and heat deposition in near-surface tissues in emerging 5G bands

Abstract

Overview

The rapid development of 5th generation (5G) mobile networks raises concerns about the potential health impacts of being exposed to the higher ranges of the microwave spectrum. This study focuses on how these exposures could vary with age.

Findings

• Evaluation of 26 GHz and 60 GHz frequencies on near-surface tissues using a plane wave model.
• Consideration of age-related changes in skin thickness and tissue electromagnetic properties.
• Age-dependent variations in power density, specific absorption rate (SAR), and heating are primarily influenced by changes in tissue permittivity and blood flow.

Conclusion

The study demonstrates that while transmitted power density increases with age, peak SAR decreases. Conversely, peak steady-state heating shows an increase of about 11% at 26 GHz and 13% at 60 GHz from ages 5 to 70. These findings indicate a notable modification in tissue response and could imply potential health risks.