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Electronics 2018, 7(6), 95;

Practical Energy Harvesting for Batteryless Ambient Backscatter Sensors

School of ECE, Technical University of Crete, 731 00 Chania, Greece
Department of Electrical Engineering, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
Department of Physics, Aristotle University of Thessaloniki, Greece and Department of Engineering, University of Nicosia, Nicosia 2417, Cyrpus
Author to whom correspondence should be addressed.
Received: 31 May 2018 / Revised: 8 June 2018 / Accepted: 11 June 2018 / Published: 13 June 2018
(This article belongs to the Special Issue RFID, WPT and Energy Harvesting)
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This work studies the performance of two methods for providing power to an ultra-low power, ambient backscatter tag, omitting the need for any battery. RF energy harvesting from a dedicated source and energy harvesting from ambient light using a single photodiode are compared. Extensive measurement results from tests conducted under real world conditions are offered for both harvesting methods. It is concluded that for a total cost of under 7 Euros the need for a battery can be eliminated, by using a single photodiode element along with a suitable boost converter. The ultra-low power character of the utilized tag enables the use of multiple harvesting methods and paves the way towards truly battery-less wireless sensor systems. View Full-Text
Keywords: energy harvesting; backscatter; RFID energy harvesting; backscatter; RFID

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Vougioukas, G.; Dimitriou, A.; Bletsas, A.; Sahalos, J. Practical Energy Harvesting for Batteryless Ambient Backscatter Sensors. Electronics 2018, 7, 95.

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