Abstract

INFANTE MOREIRA, Pedro Severo  and  GILART, Fidel. Assessment of the real public exposure to base stations over a day from instantaneous measurement. EAC [online]. 2018, vol.39, n.2, pp. 1-9. ISSN 1815-5928.

The assessment of the real public exposure to signals emitted by base station antennas of mobile telephony over a day from an instantaneous measurementperformed any time during the day is investigated. The considered RF field sources were the mobile communication GSM850 and GSM1900 downlink far-field signals received in an outdoor fixed site in an urban environment. Two traffic channels were analyzed: Ch133 (870.2 MHz), corresponding to the GSM850 and Ch674 (1962.6 MHz), corresponding to the GSM1900. A mathematical model, based on the mean value Ē(t) and the standard deviation σ_E (t) of the instantaneous electric field intensity E(t), was proposed for predicting the maximum electric field exposure E_max over a day for a week starting from an instantaneous measurement. The results of assessment of the maximum electric field exposure using this method were compared with those obtained using another method recently proposed by other authors, and it was shown that they can be more realistic.

Keywords : electromagnetic measurement; long term RF exposure of general public.

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