On energy harvesting for augmented tags |
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Affiliation: | 1. Université des sciences et de la technologie Houari-Boumédiène (USTHB), Algeria;2. Laboratoire de conception et d''intégration des systèmes (LCIS), part Grenoble Institute of Technology of University Grenoble-Alpes, Valence, France;3. Ampere Lab, Lyon University, Villeurbanne, France |
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Abstract: | In this paper, the harmonic signals generated by UHF RFID chips, usually considered as spurious effects and unused, are exploited. Indeed, the harmonic signals are harvested to feed a supplementary circuitry associated with a passive RFID tag. Two approaches are presented and compared. In the first one, the third-harmonic signal is combined with an external 2.45-GHz Wi-Fi signal. The integration is done in such a way that the composite signal boosts the conversion efficiency of the energy harvester. In the second approach, the third-harmonic signal is used as the only source of a harvester that energizes a commercial temperature sensor associated with the tag. The design procedures of the two “augmented-tag” approaches are presented. The performance of each system is simulated with ADS software, and using Harmonic Balance tool (HB), the results obtained in simulation and measurements are compared also. |
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Keywords: | Energy harvesting RFID UHF Non-linearity Harmonics Sensor-tags Récupération d'énergie RFID UHF Non-linearités Harmoniques Tags-capteurs |
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