Abstract

Overview

This study investigates the application of novel metamaterial designs to mitigate electromagnetic (EM) energy absorbed by human head tissue from 5G cellular networks. The motivation for the research is the necessary consideration of radiation emissions from wireless devices in the wake of 5G technology deployment.

Methodology

• Selection of FR-4 substrate material with a thickness of 1.6 mm for metamaterial placement.
• Results validation through fabrication and numerical simulation using CST software.

Findings

The developed square-shaped metamaterial showed quadruple resonance frequencies across multiple bands, specifically achieving reductions in Specific Absorption Rate (SAR). Notable frequencies and their changes in performance include:

• 1.246 GHz at L-band
• 3.052, 3.794 at S-band
• 4.858 GHz at C-band

Discrepancies between simulated and measured data highlighted adjustments in frequencies post-validation. High SAR reduction values, especially at 3.794 GHz with reductions of 61.16% and 70.33% for tissue volumes of 1g and 10g respectively, were recorded.

Conclusion

This research confirms the effectiveness of the proposed SM design in reducing EM exposure, marking a significant advancement in safe telecommunications technology that mitigates the potential health risks associated with electromagnetic radiation from 5G networks.