A co-polarization-insensitive metamaterial absorber for 5G n78 mobile devices at 3.5 GHz to reduce the specific absorption rate

Authors: Hannan S, Islam MT, Soliman MS, Faruque MRI, Misran N, Islam MS

Year: 2022

Category: Telecommunications Engineering

Journal: Sci Rep

DOI: 10.1038/s41598-022-15221-7

URL: https://www.nature.com/articles/s41598-022-15221-7

Abstract

Overview

Exploring the need for reduced specific absorption rate (SAR) in 5G mobile devices, this study introduces a novel metamaterial absorber designed for 3.5 GHz operations pertinent to 5G n78 mobile phone models.

Findings

  • Introduction of a co-polarization insensitive metamaterial absorber (MMA) which operates efficiently at the 5G n78 spectrum's resonance frequency of 3.5 GHz.
  • Demonstration of a minimum 33% SAR reduction, making these mobile devices comparable in SAR levels to those operating under GSM/LTE/UMTS bands.
  • The metamaterial's design includes a modified circular split-ring resonator which ensures that it absorbs only the co-polarized portion of electromagnetic waves.

Conclusion

This study confirms the effectiveness of the proposed MMA in reducing the SAR in 5G mobile devices without compromising communication quality. The relevance to EMF safety guidelines is significant, affirming the necessity of such technology to mitigate health risks associated with electromagnetic exposure from next-generation wireless devices.

5G Technology SAR Reduction Metamaterials Electromagnetic Fields Health Safety Co-polarization Insensitive Antenna Systems
← Back to Stats