An interlaboratory comparison programme on high frequency electromagnetic field measurements in a controllable environment performed in Greece

¹ National Technical University of Athens, High Voltage Laboratory, 15780 Zografou Campus, Greece
² Greek Atomic Energy Commission, Non Ionizing Radiation Office, 15310 Agia Paraskevi, Greece

^a Corresponding author: thkarabe@eeae.gr

Abstract

An interlaboratory comparison scheme (ILC) on high frequency electromagnetic field measurements has been conducted in order to evaluate the overall performance of laboratories that perform measurements in the vicinity of mobile phone base stations and broadcast antenna facilities. The participants recorded the electric field produced by two high frequency signal generators inside an anechoic chamber in three measurement scenarios with the antennas transmitting each time different signals at the FM, VHF, UHF and GSM frequency bands. In each measurement scenario, the participants also used their measurements to calculate the relative exposure ratios. In this paper, the estimates of the mean and standard deviation of the measurements were defined utilizing an iterative robust algorithm and the participants’ results were subsequently evaluated in each test level calculating the performance statistics z-scores. Based on these calculations of the z scores, possible sources of errors for each participating laboratory were discussed and the overall evaluation of their performance was determined by using an aggregated performance statistic.