Energy Harvesting Circuit With High Rf-To-Dc Conversion Efficiency

Mohammad Alibakhshikenari,Bal Singh Virdee,Chan Hwang See,Raed A. Abd-Alhameed,Francisco Falcone,Ernesto Limiti

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING（2020）

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摘要

This paper presents an energy harvesting circuit for high efficiency performance. The proposed circuit consists of an RLC shunt resonance circuit integrated to a RF antenna. The resonance circuit is used to (i) selectively pick the desired signal whose output is fed to a Cockcroft-Walton voltage multiplier circuit; and (ii) match the impedance of the antenna with the Cockcroft-Walton voltage multiplier circuit for optimum power (DC) transfer. The proposed circuit exhibits an efficiency of 68% for an input power of 200 mu W.

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关键词

Antenna, energy harvesting circuit, radio frequency (RF) energy, impedance matching circuit, resonance circuit, Cockcroft-Walton (CW) voltage multiplier

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