Electrostatic vibration energy harvester with 2.4-GHz Cockcroft-Walton rectenna start-up

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• 作者：Hakim Takhedmit^a ; ^{hakim.takhedmit@u-pem.fr} ; Zied Saddi^a ; Armine Karami^b ; Philippe Basset^a ; Laurent Cirio^a
• 关键词：Rectenna ; Cockcroft&ndash ; Walton rectifier ; Energy harvesting ; Electrostatic transduction ; Bennet's doubler
• 刊名：Comptes Rendus Physique
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：18
• 期：2
• 页码：98-106
• 全文大小：764 K
• 卷排序：18

文摘

In this paper, we propose the design, fabrication and experiments of a macro-scale electrostatic vibration energy harvester (e-VEH), pre-charged wirelessly for the first time with a 2.4-GHz Cockcroft–Walton rectenna. The rectenna is designed and optimized to operate at low power densities and provide high voltage levels: 0.5 V at 0.76 μW/cm2 and 1 V at 1.53 μW/cm2. The e-VEH uses a Bennet doubler as a conditioning circuit. Experiments show a 23-V voltage across the transducer terminal, when the harvester is excited at 25 Hz by 1.5g of external acceleration. An accumulated energy of 275 μJ and a maximum available power of 0.4 μW are achieved.