A compact microwave rectifier for wireless power transfer and energy harvesting applications
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Accepted Version
Date
2024-04-26
Authors
Moloudian, Gholamhosein
Kumar, Sanjeev
O'Flynn, Brendan
Buckley, John L.
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Published Version
Abstract
This paper presents a microwave rectifier with compact size and high efficiency for radio frequency (RF) energy harvesting and low-power internet of things (IoT) applications. The proposed rectifier consists of a matching network, a doubler rectifier, a lowpass (LPF) structure and a low-power electronic circuit. An LPF structure is employed to pass a direct current (DC) rectified signal and to control harmonics which increases the output voltage (VOUT−DC) as well as power conversion efficiency (PCE). The proposed rectifier is designed to operate at f=1.8 GHz which shows a maximum PCE of 62% for an RF input power (PIN) level of 8 dBm and optimum load (RL) of 820 Ω . A DC-DC boost converter and an energy storage capacitor (COUT=370μF) are employed to deliver sufficient DC voltage to power a low-power electronic circuit. The proposed rectifier is demonstrated to be capable of powering a low-power circuit at varying PIN levels. The developed rectifier can be used in RF energy harvesting and wireless power transmission systems to power sensor nodes and IoT devices.
Description
Keywords
Energy harvesting , Lowpass (LPF) harmonic structures , Radio frequency (RF) , Rectifier
Citation
Moloudian, G., Kumar, S., O'Flynn, B. and Buckley, J. L. (2024) 'A compact microwave rectifier for wireless power transfer and energy harvesting applications', 2024 18th European Conference on Antennas and Propagation (EuCAP), Glasgow, United Kingdom, 17-22 March 2024, pp. 1-4. https://doi.org/10.23919/EuCAP60739.2024.10501088
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