Joint Impact of Input Power, PAPR, and Load Resistance on the Receiver Efficiency of Multisine Waveforms in RF Energy Harvesting

Ayir, Nachiket; Riihonen, Taneli

doi:10.1109/wptc51349.2021.9458048

Cited by 6 publications

(5 citation statements)

References 10 publications

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“…8(a) that the proposed model can correctly estimate the receiver efficiency for all the multisines and the entire range of R L . The observations regarding the variation of receiver efficiency with R L and multisine PAPR are consistent with those in [26]: At lower P RF in values, a large R L is needed to generate higher V dc out and high-PAPR signals with their higher instantaneous values are more suitable. Contrarily at high P RF in values, a low R L is needed to avoid saturating the receiver and thus low-PAPR signals are more suitable.…”

Section: B Results Validating the Proposed Rectifier Modelsupporting

confidence: 83%

“…Another important parameter that affects the design of rectennas and the resultant receiver efficiency is the impedance mismatch between the receiving antenna and the rectifier network [13], [25], which again varies with the input signal power and frequency. The combined impact of variation in input power, PAPR, and load resistance on the receiver efficiency in RF WPT is presented in [26].…”

Section: B Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Practical Waveform-to-Energy Harvesting Model and Transmit Waveform Optimization for RF Wireless Power Transfer Systems

Ayir

Riihonen

Heino

2023

IEEE Trans. Microwave Theory Techn.

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The received radio-frequency (RF) power in farfield RF wireless power transfer (WPT)-with or without simultaneous information transfer-is minuscule due to large propagation loss in wireless media. In such scenarios, adapting to the receiver characteristics by transmit waveform optimization is essential for maximizing the harvested direct current (dc) and, thus, the end-to-end efficiency of an RF WPT system. The receiver efficiency in RF WPT is governed by the RF-to-dc efficiency of the rectifier as well as the impedance mismatch at the antenna and load. In this article, we study the receiver efficiency for any fixed load and, subsequently, present a novel rectifier model that relates the average harvested dc power to the distribution, that is, the histogram, of the instantaneous power levels of the RF signal's envelope over time. The proposed waveform-to-energy harvesting (EH) model enables us to anticipate the average harvested dc power for any waveform, including communication signals as well, given the knowledge of the powerlevel distribution. Consequently, we conduct rigorous waveform optimization to maximize the average harvested dc power and determine the digital baseband signal at the transmitter that does so, namely prove that a pulsed tone at appropriate frequency is optimal for RF WPT. We present a multiband test-bed for determining the receiver efficiency for any digital baseband waveform. The efficacy of the proposed model is corroborated through experiments as well as simulations, which confirm that it is operational as well as accurate in practice and that single-sine pulses yield higher efficiency than basic multisine waveforms, while a pulsed phase shift keying (PSK) is preferable for simultaneous wireless information and power transfer (SWIPT).

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Section: B Results Validating the Proposed Rectifier Modelsupporting

confidence: 83%

Section: B Literature Reviewmentioning

confidence: 99%

Practical Waveform-to-Energy Harvesting Model and Transmit Waveform Optimization for RF Wireless Power Transfer Systems

Ayir

Riihonen

Heino

2023

IEEE Trans. Microwave Theory Techn.

Self Cite

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“…Additionally, since the energy harvesting circuit operates at extremely high frequencies, it is necessary to employ diodes with a very quick switching time. Metal-semiconductor junctions are used in Schottky diodes [22]. In this study, we use four distinct Avago Technologies diodes: the HSMS -2800, HSMS -2820, HSMS -2850, and HSMS -2860.…”

Section: Diode Selectionmentioning

confidence: 99%

Energy Harvesting Fractal Antenna for Charging Low Power Devices

Amr Hesham,

Ahmed Fawzy,

Mohamed Fathy Abo Sree

et al. 2024

ARASET

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Radio frequency energy harvesting (RFEH) is a prospective technique that uses electromagnetic waves which waste in the air to create energy. This cutting-edge technology offers the ability to wirelessly charge battery-free gadgets, making it a potential alternative energy source for use in the future. Fractal antenna systems are a type of antenna that is characterized by their self-similarity and ability to operate over a wide range of frequencies. The proposed design combined two popular fractal shapes in one design. This one design combines the advantages of the other two designs. This research presents a novel multi-band fractal slot antenna design and optimization method for RFEH systems. The fractal antenna designs that were simulated using the CAD design suite, as well as the final design and performance that captured multiple bands are described. The rectifying and matching networks are next evaluated, and the ADS (Advanced Construct System) software is used to construct and simulate each circuit. Additionally, the voltage regulator, energy storage, and application are addressed along with the required voltage to completely function a wireless sensor node, which may be utilized in many applications including wearable technology and intelligent traffic systems (ITS) that control roads to improve environmental quality. Finally, experimental results demonstrated good agreement with simulations that had a high radiation efficiency and gain.

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“…In RF energy harvesting, the diode converts RF into DC. Many researchers explore increasing PCE by manipulating the received waveforms [11]. Using a high PAPR signal leads to a better performance in the diode due to the diode's nonlinear nature.…”

Section: System Modelmentioning

confidence: 99%

Efficient Indoor Solar Panel Energy Harvesting Exploiting the Crest Factor

Hammoud

Pollin

Schreurs

2022

2022 Wireless Power Week (WPW)

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This paper presents novel insights and a new method for improving indoor light energy harvesting for Internet of Things (IoT) applications using a photovoltaic (PV) panel. The concept is based on enhancing the rectifying performance of the intrinsic diode of the PV panel using a high peak-to-average power ratio (PAPR) light waveform. Improving techniques for rectifying systems are well established in the radiofrequency (RF) community but are applied to a light-based system in this paper. A system model is presented to justify the used method. We prove that only a pulse-width modulation (PWM) signal can enhance the energy harvesting at the PV panel. We designed a light-emitting diode (LED) driver and measured the received power to evaluate our concept. For a constant power of the light source, the PWM waveform achieved a 28.8% improvement of the received power compared to a continuous direct current (DC) light source.

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Joint Impact of Input Power, PAPR, and Load Resistance on the Receiver Efficiency of Multisine Waveforms in RF Energy Harvesting

Cited by 6 publications

References 10 publications

Practical Waveform-to-Energy Harvesting Model and Transmit Waveform Optimization for RF Wireless Power Transfer Systems

Practical Waveform-to-Energy Harvesting Model and Transmit Waveform Optimization for RF Wireless Power Transfer Systems

Energy Harvesting Fractal Antenna for Charging Low Power Devices

Efficient Indoor Solar Panel Energy Harvesting Exploiting the Crest Factor

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