Ultra-efficient microwave harvesting system for battery-less micropower microcontroller platform

Lui, K. W.; Vilches, A.; Toumazou, C.

doi:10.1049/iet-map.2010.0250

Cited by 19 publications

(9 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The only limitations seen with the CTSA is the very short distance of 5 cm over which it could be used to harvest RF energy. It is comparatively low compared to the next highest distances achieved of 40 cm [40] and 57 cm [24] with slightly bigger narrowband antennas of 40 x 40 mm 2 [41] and 30 x 30 mm 2 [24] respectively at similar operating frequencies. This mainly stems from the low gain of the antenna which is a resultant of the low conductivity and high loss of the AgHT-4 material.…”

Section: Comparison With Existing Rectenna Solutionsmentioning

confidence: 86%

“…For rectifying the electromagnetic (EM) signals in the rectenna, a narrowband rectifier designed in [24] is used in our studies, since it was the only handy rectifier available in our lab at the time of this work. However, the authors would like to highlight at this point that the CTSA in actual fact can be used as a broadband rectenna in conjunction with a broadband rectifier, and that a narrowband rectifier was used only to demonstrate in principle the CTSA's RF harvesting capability.…”

Section: Rectenna Designmentioning

confidence: 99%

“…The package inductance and capacitance are also modeled in the circuit schematic to give better accuracy. The voltagedoubler configuration used in the design helps improve the voltage sensitivity [24]. In Fig.…”

Section: Rectenna Designmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Transparent UWB Antenna for Photovoltaic Solar Panel Integration and RF Energy Harvesting

Peter

Rahman

Cheung

et al. 2014

IEEE Trans. Antennas Propagat.

107

View full text Add to dashboard Cite

A novel transparent UWB antenna for photovoltaic solar-panel integration and RF energy harvesting is proposed in this paper. Since the approval by the Federal Communications Committee (FCC) in 2002, much research has been undertaken on ultrawide band (UWB) technology especially for wireless communications. However, in the last decade, UWB has also been proposed as a power harvester. In this paper, a transparent cone top tapered slot antenna covering the frequency range from 2.2 GHz to 12.1 GHz is designed and fabricated to provide UWB communications whilst integrated onto to solar panels as well as harvest electromagnetic waves from free space and convert them into electrical energy. The antenna when sandwiched between an a-Si solar panel and glass is able to demonstrate a quasi Omnidirectional pattern that is characteristic of a UWB. The antenna when connected to a 2.55-GHz rectifier is able to produce 18 mV DC in free space and 4.4 mV DC on glass for an input power of 10 dBm at a distance of 5 cm. Although the antenna presented in this paper is a UWB antenna, only an operating range of 2.49 to 2.58 GHz for power scavenging is possible due to the limitation of the narrowband rectifier used for the study.

show abstract

Section: Comparison With Existing Rectenna Solutionsmentioning

confidence: 86%

Section: Rectenna Designmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Transparent UWB Antenna for Photovoltaic Solar Panel Integration and RF Energy Harvesting

Peter

Rahman

Cheung

et al. 2014

IEEE Trans. Antennas Propagat.

107

View full text Add to dashboard Cite

show abstract

“…At these power levels, previous works have presented enough evidence that demonstrates deficient PCE of rectification at high frequency microwaves [20], [31], [32].…”

Section: Physical Limitations Of Rf Rectificationmentioning

confidence: 99%

“…As a comparison, the work from [41] is also implemented with discrete components on FR-4. This work has the second best sensitivity (including battery charging in this work) because the combination of a single Schottky diode and an ultra-low input voltage Seiko charge-pump IC is used to deliver power into a microcontroller platform.…”

Section: Comparisons and Conclusionmentioning

confidence: 99%

Demonstration of an Efficient Ambient Radio-Frequency and Microwave Energy Harvesting System with High Sensitivity and DC Output

Shen

View full text Add to dashboard Cite

Demonstration of an Efficient Ambient Radio-frequency and Microwave Energy Harvesting System with High Sensitivity and DC OutputDirected by: Professor N. Scott BarkerThe great potential to harvest and utilize ambient Radio-frequency and microwave power has led to much research as the occurrence of a worldwide coverage of radio waves during the past decade. However, RF harvesting circuits have already been proved for more than a half century, only a small number of them have been able to be activated freely without dedicated sources and harvest available ambient RF energy that typically has a power density ranging from 0.001 to 0.1 µW/cm 2 .This thesis presents a detail description of each element of an RF energy harvesting system operating at 2.45 GHz, including an antenna, an RF-to-DC conversion rectifier and an integrated module of DC-DC up-conversion and power management. This thesis does not focus on the design of the antenna and the integrated module, both of which are products designed by Texas Instruments.The key section of this thesis is concerned about the RF-to-DC rectifier, which is the core part that converts collected RF power to applicable DC power. In this section, the reasons that only a small number of rectifiers can work efficiently with ambient RF power levels are presented based on nonlinear model analyses of a diode, the dominant rectifying device in RF and microwave power harvesters. And the mechanism of overall power conversion efficiency (PCE) of the rectifier is explained in this analysis. Besides, a prototype of a modified rectifier is designed, fabricated and measured to demonstrate the potential ability to work in ambient power regions.The entire RF energy harvesting system is tested with an RF signal generator at the iii

show abstract

New Insights into Radio Wave Energy Harvesting across Wide Geographical Ranges Harnessing Medium‐Wave Radio Broadcasting Infrastructure

Shoji

2023

Energy Tech

View full text Add to dashboard Cite

This study conducts field experiments using the radio‐wave energy harvester of hoop‐shaped radio (HOOPRA) to elucidate the relationship between the distance from the medium‐wave (MW) radio broadcasting station and the resonance voltage as an index of harvested energy. Accordingly, a numerical equation that describes the relationship between the distance and voltage with a strong correlation coefficient of R2 > 0.996 is derived. HOOPRA can illuminate ultrabright white, green, and red light‐emitting diodes (LEDs) within a 5 km radius of the public Nihon Hoso Kyokai JOFG (927 kHz, 5 kW) in Fukui, thereby serving as a valuable energy source for the 150 000 residents (60 000 households) in this region. The public JOAK (594 kHz, 300 kW) and JOAB (693 kHz, 500 kW) are examined for similar field experiments in the Kanto region. The results reveal that HOOPRA can illuminate ultrabright white, green, and red LEDs within a radius of 30 km and ultrabright red LEDs within a radius of 50 km from JOAB, which will benefit the 23 million residents (1.1 million households) in this region. Overall, the results provide novel insights for developing ultrawide‐area wireless energy‐transfer technology by leveraging the global infrastructure of MW radio broadcasting.

show abstract

Ultra-efficient microwave harvesting system for battery-less micropower microcontroller platform

Cited by 19 publications

References 15 publications

A Novel Transparent UWB Antenna for Photovoltaic Solar Panel Integration and RF Energy Harvesting

A Novel Transparent UWB Antenna for Photovoltaic Solar Panel Integration and RF Energy Harvesting

Demonstration of an Efficient Ambient Radio-Frequency and Microwave Energy Harvesting System with High Sensitivity and DC Output

New Insights into Radio Wave Energy Harvesting across Wide Geographical Ranges Harnessing Medium‐Wave Radio Broadcasting Infrastructure

Contact Info

Product

Resources

About