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Description
First real private 5G networks are being deployed to support the industry 4.0 transition. To obtain an insight of the workers EMF exposure emitted by 5G private networks, analysis of RF EMF due to 5G equipment was carried on a real case scenario in the logistic industrial sector - warehouse.
The industrial private standalone (SA) 5G network is located inside the warehouse. It operates in the 3500 MHz frequency band. Four pico remote radio heads are mounter under the ceiling and spread over entire warehouse building.
RF EMF measurements were done with the spectrum analyser Narda SRM 3006 with the antenna Narda 3502/01. By extrapolating the measured value of the reference signal RS the worst-case exposure conditions under full load of base station were determined. Numerical calculations were carried out by a Narda EFC 400 program package and by a numerical tool developed in MATLAB, both are based on ray tracing method.
RF EMF measurement results clearly show that the electric field strength values were low on all workers accessible locations in the warehouse. The maximum measured or calculated value was below 2 V/m. This is well below the Directive 2013/35/EU action values of 140 V/m as well as the 1999/519/EC reference levels of 61 V/m which should be used for workers at particular risks (workers wearing active or passive implanted or body worn medical devices, pregnant workers).
Comparison of results obtained by different methods show acceptable agreements between the results.
