Radiofrequency Exposure Measurements on a 28 GHz Band 5G Base Station

This paper presents the electromagnetic field (EMF) measurement results on a 5G frequency range 2 (FR2) base station (BS). In order to investigate the effect of measurement configurations (smartphone location and antenna type) and traffic load conditions on the EMF results, certain measurements are performed, and the results are analyzed and provided. It is found that the maximum instantaneous electric-field (E-field) strengths are only related to the measurement configuration and are not dependent on the traffic condition. However, the root mean square (RMS) E-field strengths rely on both the measurement configuration and the traffic condition. The RMS E-field strength differences between traffic on case and traffic off case are $\ge 19$ dB.