Integrated cooperative radiofrequency (RF) and kinetic energy harvester

Abstract : This work demonstrates an integrated cooperative power harvester collecting both RF and kinetic energy simultaneously. A permanent magnet and coils based kinetic generator and a RF energy receiving antenna are combined on one single board with a rectifier circuit. The prototype has a dimension of 50 mm × 80 mm, similar to the size of a credit card. Cooperative harvesting mode enables to improve diode's power conversion efficiency (PCE) significantly and greatly enhances the resilience of the harvester in an ever-changing environment. Measurement results indicate that this cooperative harvester helps increase the DC output power by at least 50% when both injecting power is under -37 dBm and nearly 100% while both reach -45 dBm, compared with the direct superposition of harvested power from separate RF and kinetic excitation modes.
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https://hal.archives-ouvertes.fr/hal-01722687
Contributor : Corinne Dejous <>
Submitted on : Sunday, March 4, 2018 - 11:48:18 PM
Last modification on : Monday, March 19, 2018 - 10:38:02 PM

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Xiaoqiang Gu, Simon Hemour, Ke Wu. Integrated cooperative radiofrequency (RF) and kinetic energy harvester. 2017 IEEE Wireless Power Transfer Conference (WPTC), May 2017, Taipei, Taiwan. ⟨10.1109/WPT.2017.7953891⟩. ⟨hal-01722687⟩

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