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In this paper, we present a novel wireless sensor for the detection of food quality. The main idea is to integrate the sensing capability into UHF RFID tags thanks to the relation between physical read-range and permittivity of object in that we labeled RFID tags. From the knowledge in variation of food permittivity in function to time by experimental characterization, it is possible to detect the...
In this paper, we present a novel design for wideband Ultra High Frequency (UHF) Radio Frequency Identification (RFID) passive tag. The optimized design has compact size and covers all the bandwidth for global UHF RFID (860MHz–960MHz). For flexible customization in real-world applications, an equivalent model of antenna geometry is also proposed in this work. The agreement between equivalent model...
A novel wireless sensor for the detection of food quality is presented. The main idea is to transform radio frequency identification (RFID) tags into RFID sensors, owing to a specific design of the tag antenna. From knowledge of the variation of the permittivity of food over time through experimental characterisation, it is possible to detect the time from which the food becomes improper for consumption...
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