  This paper presents an evaluation of the WiFi exposure levels inside the
university in the 2.4 GHz frequency band. The selected environment is the
typical scenario where WiFi exposure concerns have increased in the last years,
since a Wireless Local Area Network is deployed close to the users.
Measurements of 1 h and 24 h of duration were performed to assess the temporal
and spatial variability of the signal. Two instruments were employed, a
spectrum analyzer appropriate configured for recording accurate and realistic
samples and an exposimeter. A detailed description of the equipment, the
measurement procedure and data analysis is provided in order to allow the
reproducibility of these types of measurements. Finally, a comparison of the
WiFi levels obtained by other authors is presented, concluding that all these
methods are useful for determining WiFi exposure distribution, but if more
accurate results are required, professional equipment appropriately configured
should be used.
