Stochastic Dosimetry Assessment of the Human RF-EMF Exposure to 3D Beamforming Antennas in indoor 5G Networks

Abstract

Overview

The research explores how the upcoming 5G networks impact exposure to radio-frequency electromagnetic fields (RF-EMFs), particularly through the use of advanced beamforming antennas.

Findings

The study employs a novel approach combining traditional computational methods with the polynomial chaos kriging method to analyze exposure levels across 1000 different antenna beamforming patterns. This methodology notably enhances the evaluation of RF-EMF exposure with minimal computational effort.

• Frequency: 3.7 GHz
• Antenna Type: 64 patch elements uniform planar array
• Technology: 3D beamforming

Exposure levels were specifically assessed for a child model across various tissues via the specific absorption rate (SAR).

Conclusion

The findings indicate a high variability in exposure levels, influenced by the antenna's beamforming patterns. Crucially, certain elevation and azimuth angles of the antenna's beam can lead to higher exposure levels, necessitating awareness and potentially revised safety standards in 5G technology deployment.