Instrumentation & Measurement Magazine 23-9 - 10

dB. During the whole measurement period, the observed location was secured, and only authorized technical personnel had
access to provide measurement conditions of the unperturbed
field [3], [11]. The distances between the signal sources and
receiving position were not considered; we concentrated on
general exposure assessment. Due to the relatively high sensitivity of the EME Spy 140 probe, all sampled EFSs stored in the
PEM memory were above the lower detection limit.

UMTS Dosimeter Measurements: Experimental
Results
Fig. 7 presents the temporal variations of EFS over the first
week for the UMTS downlink band. All measurements aimed
at starting at 8 a.m. until 8 a.m. the next day. Table 2 summarizes the values of the instantaneous EFS (Emin denotes the
minimum EFS above the lower sensitivity level of EME Spy
140). Analyzing the results of the obtained EFS parameters

Fig. 7. Temporal variations of EFS and exposed energy density for UMTS downlink band, first week.
10	

IEEE Instrumentation & Measurement Magazine	

December 2020



Instrumentation & Measurement Magazine 23-9

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