A 2.4GHz ambient RF energy harvesting system with &amp;#x2212;20dBm minimum input power and NiMH battery storage

Gudan, Kenneth; Chemishkian, Sergey; Hull, Jonathan J.; Thomas, Stewart J.; Ensworth, Joshua F.; Reynolds, Matthew S.

doi:10.1109/rfid-ta.2014.6934191

Cited by 24 publications

(29 citation statements)

References 12 publications

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“…Maximum RF to DC power conversion efficiency is 81% at 6 dBm (3.98 mW). Gudan et al [86] also designed a WPH system to charge a NiMH battery using either ambient Wi-Fi or Bluetooth signals. With the sensitivity down to −20 dBm, this system was capable of charging a battery to 5.8 µJ after 1 h. Table 5 lists some low-power consumption sensor applications that can be integrated with a WPH module.…”

Section: Wireless Power Harvesting Network (Iot/wsn)mentioning

confidence: 99%

RF power harvesting: a review on designing methodologies and applications

Tran

Cha

Park

2017

Micro and Nano Syst Lett

242

146

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Wireless power transmission was conceptualized nearly a century ago. Certain achievements made to date have made power harvesting a reality, capable of providing alternative sources of energy. This review provides a summ ary of radio frequency (RF) power harvesting technologies in order to serve as a guide for the design of RF energy harvesting units. Since energy harvesting circuits are designed to operate with relatively small voltages and currents, they rely on state-of-the-art electrical technology for obtaining high efficiency. Thus, comprehensive analysis and discussions of various designs and their tradeoffs are included. Finally, recent applications of RF power harvesting are outlined.

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Section: Wireless Power Harvesting Network (Iot/wsn)mentioning

confidence: 99%

RF power harvesting: a review on designing methodologies and applications

Tran

Cha

Park

2017

Micro and Nano Syst Lett

242

146

View full text Add to dashboard Cite

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“…Therefore the Schottky diode has a limitation and the study thereafter is focusing on the usage of a CMOS. Several proposed designs had been simulated before and the results proved that the usage of CMOS have much advantages compared to Schottky diode [7][8][9][10][11][12][13]. In this paper, selected CMOS 0.13 µm technology is proposed and implemented.…”

Section: Introductionmentioning

confidence: 99%

A 900-2400 MHz AC-DC Rectifier Circuit for Radio Frequency Energy Harvesting

2016

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Abstract. This paper presents a 900-2400 MHz AC-DC rectifier circuit for radio frequency (RF) energy harvesting. The proposed circuit consists of a rectifier and charge pump. The multi-stage NMOS RF-DC rectifier circuit is designed to convert the AC signal to DC signal while the charge pump helps to amplify the DC amplitude. The proposed circuits are designed and simulated using CMOS 0.13-µm technology. The simulation results show that the proposed circuit able to produce 2.9 V DC voltage at 10 kΩ load with an input voltage of 150 mV.

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“…For example, K. Gudan and his group proposed two RF energy harvesting and storage systems. The former system flows 5.8 micro-joules into a rechargeable NiMH battery after 1 hour at -20dBm RF input power at 2.45 GHz, as shown in Figure 1(a) [9]. The latter one was improved that enables battery charging from incident power levels as low as -25 dBm operating at 2.4 GHz, accumulating 2 micro-joules in the same battery in one minute when -25 dBm power is incident, as shown in Figure 1(b) [10].…”

Section: A Brief History and Literature Reviewmentioning

confidence: 99%

“…Figure 1. The structure of RF harvesting System reproduced from [9], [10], [11] On the other hand, most of groups concentrate on RF-to-DC rectifier, a critical part of an RF energy harvester. The most essential parameter to evaluate the performance of a rectifier is power conversion efficiency PCE.…”

Section: A Brief History and Literature Reviewmentioning

confidence: 99%

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

Shen

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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

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A 2.4GHz ambient RF energy harvesting system with −20dBm minimum input power and NiMH battery storage

Cited by 24 publications

References 12 publications

RF power harvesting: a review on designing methodologies and applications

RF power harvesting: a review on designing methodologies and applications

A 900-2400 MHz AC-DC Rectifier Circuit for Radio Frequency Energy Harvesting

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

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