An over-the-distance wireless battery charger based on RF energy harvesting

Rosa, Roberto La; Zoppi, Giulio; Finocchiaro, Alessandro; Papotto, Giuseppe; Donato, Loreto Di; Sorbello, G.; Bellomo, F.; Carlo, C. A. Di; Livreri, Patrizia

doi:10.1109/smacd.2017.7981575

Cited by 24 publications

(14 citation statements)

References 4 publications

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“…These antennas can be easily integrated in the wireless battery charger system described in Ref. , and can increase considerably the charging current level. Previously, all charging measurements of the just mentioned system were carried out using a low performance printed dipole antenna, which gain is about 1 dB.…”

Section: Resultsmentioning

confidence: 99%

“…As previously pointed out, antenna gain has a huge impact on the amount of radiofrequency energy transferred in the case of the system described in Ref. . Moreover the presence of a ground plane is advantageous to shield the electronic circuit connected to the antenna.…”

Section: Antenna Designmentioning

confidence: 91%

“…Clearly a larger gain reduces the wireless charging time and maintenance cost in applications such as the one described in Refs. . Moreover, if for a fixed transmitted power, the antenna is capable to provide a sufficient gain and the electronic circuit sensitivity is adequate a battery‐less configuration can be adopted.…”

Section: Introductionmentioning

confidence: 99%

“…In this article, a compact microstrip antenna, that can be easily integrated in the system showed in Refs. is presented. The antenna achieves good impedance matching by the insertion of an annular ring slot concentric to the feeding pin capable to provide the correct capacitive compensation of the probe inductance.…”

Section: Introductionmentioning

confidence: 99%

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A circularly polarized wideband high gain patch antenna for wireless power transfer

Carlo

Donato

Mauro

et al. 2018

Micro & Optical Tech Letters

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This article deals with a microstrip patch antenna working at 868 MHz, suitable for the radio frequency wireless power transfer and energy harvesting applications. The proposed monolithic antenna is compact, lightweight and it is printed on a thick substrate in order to maximize the total gain in the broadside direction. The antenna radiates at 868 MHz with a fractional impedance bandwidth of 5% and it shows a gain of 4.14 dB.

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Section: Resultsmentioning

confidence: 99%

Section: Antenna Designmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A circularly polarized wideband high gain patch antenna for wireless power transfer

Carlo

Donato

Mauro

et al. 2018

Micro & Optical Tech Letters

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“…Although with the advancement in technology, these low power sensors nodes are very reliable and promising, but still there are some issues to be resolved in order to make these technologies ubiquitous and convenient. One of the major issues in deploying these sensor nodes in remote application is power source [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Piezoelectric Energy Harvesting Circuit for Rechargeable Ultra - Low Weight Lithium - Ion Batteries.

Pandey¹,

Zalke²,

Nandanwar³

et al. 2018

JESTR

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Energy harvesting is expected to be used as a source of energy for tiny low power sensor nodes. Since the amount of harvested energy is unstable, an energy storage device is used with an energy harvesting system. With advancement in rechargeable batteries, ultra-low weight rechargeable lithium-ion batteries are used as energy storage devices with low power wireless sensor nodes at remote places. These ultra-low weight energy storage devices are expected to be charged efficiently with maximum harvested power. The mismatching of the electrical impedance between input (i.e. Piezoelectric Transducer (PZT)) and output (i.e. Load) gives inefficient power transfer. The piezoelectric energy harvesting circuit described in this paper focuses on the design and analysis of op-amp based inductor circuit for matching the impedance by presenting a conjugate impedance match to the Piezoelectric harvester. The values of inductor obtained for optimal power transfer from PZT to storage device tend to be prohibitively large. This becomes an inhibiting factor for Integrated Circuit(IC) realization of the interface circuits. The proposed work implements the required value of inductor using op-amp circuit to match the complex conjugate part of the impedance thereby making it cost effective and suitable for IC realization. Finally, comparison between pure resistive match and complex conjugate match is presented along with results.

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Bibliography

2021

Wireless RF Energy Transfer in the Massive IoT Era

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An over-the-distance wireless battery charger based on RF energy harvesting

Cited by 24 publications

References 4 publications

A circularly polarized wideband high gain patch antenna for wireless power transfer

A circularly polarized wideband high gain patch antenna for wireless power transfer

Design and Analysis of Piezoelectric Energy Harvesting Circuit for Rechargeable Ultra - Low Weight Lithium - Ion Batteries.

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