Dual-Domain Maximum Power Tracking for Multi-Input RF Energy Harvesting with a Reconfigurable Rectifier Array

Mu Chun Chen; Tsung Wen Sun; Tsung Heng Tsai

doi:10.3390/en15062068

Dual-Domain Maximum Power Tracking for Multi-Input RF Energy Harvesting with a Reconfigurable Rectifier Array

Mu Chun Chen, Tsung Wen Sun, Tsung Heng Tsai^*

^*Corresponding author for this work

Institute of Pioneer Semiconductor Innovation

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

This work proposes a dual-domain maximum power tracking (MPPT) technique for mul-tiple-input RF energy harvesting systems. A differential rectifier array is used to implement 4-chan-nel reconfigurable RF to DC power conversion, and an adjustable 4-bit capacitor array is designed to improve the impedance matching between the antennas and the rectifiers. Using the perturbation and observation (P&O) method, both arrays are adaptively configured in the background with the variations of the input energy and output loading. Experimental results show that the proposed circuit successfully tracks the maximum power points while harvesting RF energy, with the peak conversion efficiency of 49.06% when the input energy is −6 dBm. With the proposed dual-domain MPPT, the high efficiency range of the energy harvesting system is greatly extended to 21 dB (−21– 0 dBm).

Original language	English
Article number	2068
Journal	Energies
Volume	15
Issue number	6
DOIs	https://doi.org/10.3390/en15062068
State	Published - 1 Mar 2022

Keywords

Adaptive impedance matching (AIM)
Energy harvesting
Maximum power point tracking (MPPT)
Reconfigurable rectifier array
RF to DC

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/en15062068

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title = "Dual-Domain Maximum Power Tracking for Multi-Input RF Energy Harvesting with a Reconfigurable Rectifier Array",

abstract = "This work proposes a dual-domain maximum power tracking (MPPT) technique for mul-tiple-input RF energy harvesting systems. A differential rectifier array is used to implement 4-chan-nel reconfigurable RF to DC power conversion, and an adjustable 4-bit capacitor array is designed to improve the impedance matching between the antennas and the rectifiers. Using the perturbation and observation (P&O) method, both arrays are adaptively configured in the background with the variations of the input energy and output loading. Experimental results show that the proposed circuit successfully tracks the maximum power points while harvesting RF energy, with the peak conversion efficiency of 49.06% when the input energy is −6 dBm. With the proposed dual-domain MPPT, the high efficiency range of the energy harvesting system is greatly extended to 21 dB (−21– 0 dBm).",

keywords = "Adaptive impedance matching (AIM), Energy harvesting, Maximum power point tracking (MPPT), Reconfigurable rectifier array, RF to DC",

author = "Chen, {Mu Chun} and Sun, {Tsung Wen} and Tsai, {Tsung Heng}",

note = "Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

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month = mar,

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doi = "10.3390/en15062068",

language = "English",

volume = "15",

journal = "Energies",

issn = "1996-1073",

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T1 - Dual-Domain Maximum Power Tracking for Multi-Input RF Energy Harvesting with a Reconfigurable Rectifier Array

AU - Chen, Mu Chun

AU - Sun, Tsung Wen

AU - Tsai, Tsung Heng

PY - 2022/3/1

Y1 - 2022/3/1

N2 - This work proposes a dual-domain maximum power tracking (MPPT) technique for mul-tiple-input RF energy harvesting systems. A differential rectifier array is used to implement 4-chan-nel reconfigurable RF to DC power conversion, and an adjustable 4-bit capacitor array is designed to improve the impedance matching between the antennas and the rectifiers. Using the perturbation and observation (P&O) method, both arrays are adaptively configured in the background with the variations of the input energy and output loading. Experimental results show that the proposed circuit successfully tracks the maximum power points while harvesting RF energy, with the peak conversion efficiency of 49.06% when the input energy is −6 dBm. With the proposed dual-domain MPPT, the high efficiency range of the energy harvesting system is greatly extended to 21 dB (−21– 0 dBm).

AB - This work proposes a dual-domain maximum power tracking (MPPT) technique for mul-tiple-input RF energy harvesting systems. A differential rectifier array is used to implement 4-chan-nel reconfigurable RF to DC power conversion, and an adjustable 4-bit capacitor array is designed to improve the impedance matching between the antennas and the rectifiers. Using the perturbation and observation (P&O) method, both arrays are adaptively configured in the background with the variations of the input energy and output loading. Experimental results show that the proposed circuit successfully tracks the maximum power points while harvesting RF energy, with the peak conversion efficiency of 49.06% when the input energy is −6 dBm. With the proposed dual-domain MPPT, the high efficiency range of the energy harvesting system is greatly extended to 21 dB (−21– 0 dBm).

KW - Adaptive impedance matching (AIM)

KW - Energy harvesting

KW - Maximum power point tracking (MPPT)

KW - Reconfigurable rectifier array

KW - RF to DC

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Dual-Domain Maximum Power Tracking for Multi-Input RF Energy Harvesting with a Reconfigurable Rectifier Array

Abstract

Keywords

UN SDGs

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