EMF Exposure De-Concertation Model for Multi-Technology Mobile Base-Station

Abstract

Significant developments in wireless solutions have led to the rapid expansion of mobile networks specially with the rise of the Fifth Generation New Radio (5G NR). The deployment of a large number of base stations (BSs) is raising concerns about the potential for increased exposure to electromagnetic field radiation (EMF). This paper presents a design model to de-concentrate the total exposure from sectorized antennas of the multi-technology base station with no drawback on site coverage level and capacity. The model applies the concept of weighted antenna’s azimuth to spread the total exposure by horizontally separating the installed antennas in the same sector. A set of simulations is carried out to calculate the reduction in total exposure ratio (TER) for widely commonly used setups in antennas deployment for multi-technology mobile networks. Additionally, A field measurements was done in a life network to assess the TER and the compliance distance (CD). The pre-and-post results show the TER and CD are reduced after applying the proposed model. Overall, the system records show no significant impacts were observed on site’s coverage level and capacity.