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oai:repisalud.isciii.es:20.500.12105/139822025-05-27T08:33:42Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19619

00925njm 22002777a 4500 dc Zradziński, Patryk author Karpowicz, Jolanta author Gryz, Krzysztof author Owczarek, Grzegorz author Ramos-Gonzalez, Maria Victoria author 2021-06-21 The aim of this study was to model and evaluate the Specific Energy Absorption Rate (SAR) values in humans in proximity to fixed multi-antenna I-RFID readers of passive tags under various scenarios mimicking exposure when they are incorporated in Real-Time Location Systems (RTLS), or used to monitor Personal Protective Equipment (PPE). The sources of the electromagnetic field (EMF) in the modelled readers were rectangular microstrip antennas at a resonance frequency in free space of 866 MHz from the ultra-high frequency (UHF) RFID frequency range of 865-868 MHz. The obtained results of numerical modelling showed that the SAR values in the body 5 cm away from the UHF RFID readers need consideration with respect to exposure limits set by international guidelines to prevent adverse thermal effects of exposure to EMF: when the effective radiated power exceeds 5.5 W with respect to the general public/unrestricted environments exposure limits, and with respect to occupational/restricted environments exposure limits, when the effective radiated power exceeds 27.5 W. Sensors (Basel). 2021;21(12):4251. 10.3390/s21124251 1424-8220 Sensors (Basel, Switzerland) 34205808 http://hdl.handle.net/20.500.12105/13982 Internet of Things (IoT) Personal Protective Equipment (PPE) RadioFrequency IDentification (RFID) Real-Time Location Systems (RTLS) Biomedical engineering Environmental engineering Numerical simulations Occupational exposure Public health Specific energy absorption rate (SAR) Modelling and Evaluation of the Absorption of the 866 MHz Electromagnetic Field in Humans Exposed near to Fixed I-RFID Readers Used in Medical RTLS or to Monitor PPE