Directional Multiport Ambient RF Energy-Harvesting System for the Internet of Things

Shen, Shanpu; Zhang, Yujie; Chiu, Chi-Yuk; Murch, R.D.

doi:10.1109/jiot.2020.3032435

Cited by 34 publications

(20 citation statements)

References 54 publications

(72 reference statements)

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“…Many works on RF energy harvesting system architectures have been reported in the literature [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. In these systems, different antenna and rectifier structures have been proposed to obtain sufficient RF output power with improved gain and efficiency.…”

Section: Stat Of the Art On Rf Energy Harvesting Systemsmentioning

confidence: 99%

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A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

Benkalfate

Ouslimani

Kasbari

et al. 2022

Sensors

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In this paper, a new RF Energy Harvesting (RF-EH) system for Wireless Sensor Network (WSN) feeding is proposed. It is based on two different monitored architectures using switch circuits controlled by the input powers. One architecture is more adapted to high input powers and the other to low input powers. The two different architectures and the system are designed and realized on Teflon glass substrate with a relative permittivity of 2.1 and thickness of 0.67 mm. They are tested separately as a function of the distance from the relay antenna. A new multiband antenna with a size of 40 × 30 mm2 is used for both architectures and the system. The measured antenna gains are 2.7 dB, 2.9 dB, and 2.55 dB for the frequencies of 1.8 GHz, 2.1 GHz, and 2.66 GHz corresponding to the mobile communication networks, respectively. The rectifier consists of two Schottky diodes forming a full-wave rectifier and voltage doubler. The maximum measured RF-to-DC conversion efficiency is 71.5%. The proposed RF-EH system provides a maximum DC output voltage of 5.6 V and 3.15 V for an open and 2 kΩ resistance load, respectively.

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Section: Stat Of the Art On Rf Energy Harvesting Systemsmentioning

confidence: 99%

“…These systems use RF power combiners with two or more inputs [20][21][22]. The used multi-port antenna could be either a single band, multi-band, or broadband one.…”

Section: Multi-port Rf-eh Systemsmentioning

confidence: 99%

A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

Benkalfate

Ouslimani

Kasbari

et al. 2022

Sensors

View full text Add to dashboard Cite

show abstract

“…The parallel additive DC power combining concept is previously explored in the literature in [48], [49]. The concept is implemented by connecting the output nodes of the individual rectifiers in parallel and then connecting them to a common load Z eq =Z L /5=320 Ω.…”

Section: Power Combiningmentioning

confidence: 99%

Rectifier Integrated Multibeam Luneburg Lens Employing Artificial Dielectric as a Wireless Power Transfer Medium at Mm Wave Band

et al. 2021

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In this paper, a rectifier integrated Luneburg lens is designed at K band for wireless power transfer (WPT) applications. The lens consists of two metallic layers with a gap of 0.3 mm between them and has been made by employing the glide symmetry technique. A flare is tailored to match the outer impedance of the lens to the free space impedance. Five microstrip tapers are used at intervals of 18 0 at the periphery of the lens to collect the energy from it. The rectifying circuits are co-designed and are integrated with these five tapered launchers so as to make the entire structure suitable for capturing the transmitted power from the solar power satellite wirelessly, and to convert it to the equivalent voltage. Finally, all the ports are connected with a common load for DC power combining, and the overall performance of the lens integrated rectifier as an energy harvesting system is reported in terms of its power conversion efficiency (PCE).

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“…focused on designing efficient rectenna to increase the output dc power. Various techniques to enhance the rectenna design include using multiband rectenna [2]- [5], multiport rectenna [6]- [10], compact rectenna [11], [12], metasurface rectenna [13], [14], tightly coupled array rectenna [15], [16], multiband and broadband rectifier [17], [18], high-efficiency rectifier [19]- [22], reconfigurable rectifier [23], and hybrid RF-solar harvester [24], [25].…”

Section: Introductionmentioning

confidence: 99%

Closed-Loop Wireless Power Transfer with Adaptive Waveform and Beamforming: Design, Prototype, and Experiment

Shen

Kim

Clerckx

2021

Preprint

Self Cite

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In this paper, we design, prototype, and experiment a closed-loop radiative wireless power transfer (WPT) system with adaptive waveform and beamforming using limited feedback. Spatial and frequency domains are exploited by jointly utilizing multi-sine waveform and multi-antenna beamforming at the transmitter in WPT system to adapt to the multipath fading channel and boost the output dc power. A closed-loop architecture based on a codebook design and a low complexity over-theair limited feedback using an IEEE 802.15.4 RF interface is proposed. The codebook consists of multiple codewords where each codeword represents particular waveform and beamforming. The transmitter sweeps through the codebook and then the receiver feeds back the index of the optimal codeword, so that the waveform and beamforming can be adapted to the multipath fading channel to maximize the output dc power without requiring explicit channel estimation and the knowledge of accurate Channel State Information. The proposed closedloop WPT with adaptive waveform and beamforming using limited feedback is prototyped using a Software Defined Radio equipment and measured in a real indoor environment. The measurement results show that the proposed closed-loop WPT with adaptive waveform and beamforming can increase the output dc power by up to 14.7 dB compared with the conventional single-tone and single-antenna WPT system.

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Directional Multiport Ambient RF Energy-Harvesting System for the Internet of Things

Abstract: If it is the author's pre-published version, changes introduced as a result of publishing processes such as copy-editing and formatting may not be reflected in this document. For a definitive version of this work, please refer to the published version.

Cited by 34 publications

References 54 publications

A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

Rectifier Integrated Multibeam Luneburg Lens Employing Artificial Dielectric as a Wireless Power Transfer Medium at Mm Wave Band

Closed-Loop Wireless Power Transfer with Adaptive Waveform and Beamforming: Design, Prototype, and Experiment

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