On energy harvesting for augmented tags

Publication date: Available online 23 December 2016 Source:Comptes Rendus Physique Author(s): Dahmane Allane, Yvan Duroc, Gianfranco Andia Vera, Rachida Touhami, Smail Tedjini 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.

Source: Comptes Rendus Physique - December 23, 2016 Category: Physics Source Type: research