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Demonstration of SAFE electromagnetic Radiation emitted by 5G active antennas systems
Funded by: Service des médias, de la connectivité (SMC)
Project Objective
Showcase to the general public how 5G base stations are reducing the amount of electromagnetic radiation emitted to the environment, contrary to the common misconception. From a technical point of view, some of the focused topics for this project are:
How steerable active antennas use more efficiently the energy thanks to their increased directivity (keeping signal-to-noise ratio constant)
How increased frequency bands in the mmWave range help to miniaturize, distribute, and deploy smaller low-power coverage cells
How the signal power emitted by the base station has a lower magnitude than the one generated by the user terminal
How new waveforms and duplexing schemes (FDD vs TDD) decrease the exposure to radiation concerning previous generations of cellular technology.
My role:
Emulated user-specific DL beamforming with a 5G Signal Generator and Horn Antenna. User-specific beam forming is a distinguished feature in 5G-NR.
In-lab measurement of EMF (Frequency Selective, Code Selective, and Wideband) in the vicinity of UE using COTS equipment and comparison with the case when gNB does not create a user-specific beam (the case of 4G LTE).
Outdoor measurement of EMF from commercial 5G gNB and 4G LTE during downlink and uplink traffic.
Live demonstration at 5G Connecting Tomorrow Conference 2021
Figure-1: Set-up for in-lab validation. A low directive patch antenna was used at both eNB and UE to emulate 4G LTE network. EMF near the vicinity of UE was measured during uplink and downlink traffic.
Figure-2: Set-up for in-lab validation. A highly directive Horn antenna was used at both gNB and UE. EMF near the vicinity of UE was measured during uplink and downlink traffic.
Demo at 5G Connecting Tomorrow Conference 2021, Luxembourg Part-1
Demo at 5G Connecting Tomorrow Conference 2021, Luxembourg Part-2
Results from this project were very interesting. The preprint is available here
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