A Dual-Mode Nested Rectifier for Ambient Wireless Powering in CMOS Technology

Almansouri, Abdullah S.; Kosel, Jürgen; Salama, Khaled N.

doi:10.1109/tmtt.2020.2970913

Cited by 23 publications

(16 citation statements)

References 46 publications

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“…It has a compact and small silicon area of 0.0093 mm 2 . In addition, it has a better sensitivity and dynamic range than the voltagethreshold-compensated, DM nested, and adaptive rectifiers [ 12 , 13 , 14 ]. Compared to the low power performance, the proposed design offers the best peak PCE at −35 dBm of 25.5%.…”

Section: Resultsmentioning

confidence: 99%

“…Internal threshold-voltage compensation of the rectifying transistors is introduced in [ 12 ] to increase the harvested power and reduce the leakage current; however, it suffers from poor sensitivity and limited RF input power range. The authors of [ 13 ] propose a dual-mode nested feedback circuit to lower the effective threshold voltage of the rectifier and to minimize the reverse leakage current. However, the proposed design increases the circuit complexity and parasitic elements, which degrades the performance of the rectifier at the UHF.…”

Section: Introductionmentioning

confidence: 99%

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A 900 MHz, Wide-Input Range, High-Efficiency, Differential CMOS Rectifier for Ambient Wireless Powering

Alhoshany

2022

Sensors

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This paper presents a wide dynamic-range CMOS rectifier with high efficiency and high sensitivity for RF energy harvesting. A new adaptive-biasing scheme is implemented using stacking diodes with dynamic threshold voltage to mitigate the reverse-leakage current of the NMOS rectifying devices at high RF power levels. The proposed design employs the adaptive-biasing technique to control the conduction of the PMOS rectifying devices with self-bulk biasing of the feedback diodes to minimize the leakage current. The proposed novel techniques extend the dynamic range of the RF-to-DC power converter with high efficiency, which is 17 times better than a conventional cross-coupled rectifier. The prototype is implemented using a standard 65 nm CMOS technology and occupies a 0.0093 mm2 active area. The proposed design achieves a peak power conversion efficiency (peak PCE) of 73%, −18.8 dBm 1-V sensitivity, and a superb dynamic range of 17.3 dB with efficiency greater than 80% of its peak PCE, which outperforms the state-of-the-art RF CMOS rectifiers, when operating at UHF 900 MHz with a 100-KΩ load.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 900 MHz, Wide-Input Range, High-Efficiency, Differential CMOS Rectifier for Ambient Wireless Powering

Alhoshany

2022

Sensors

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“…Finally, it is key to note that while the proposed RFID sensor achieves a state-of-the-art wireless read-range compared to most reported RFID sensors, the read-range is limited by the tag's turn-on threshold (−21 dBm) and the reader's sensitivity (−74 dBm). For example, a higher sensitivity reader such as [32] would enable the proposed RFID ice sensor to be interrogated at ranges in excess of 20 m. Furthermore, recent advances in CMOS rectifiers demonstrating high RF-DC power conversion efficiencies as low as −30 dBm [33] will enable future RFID ICs to operate with a much higher sensitivity, where the tag will require less than −30 dBm of RF power to report its ID to the reader.…”

Section: Comparison With Other Ice Sensing Approachesmentioning

confidence: 99%

Wireless Ice Detection and Monitoring using Flexible UHF RFID Tags

Wagih¹,

Shi²

2021

Preprint

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Owing to its low relative permittivity, very few microwave sensors have been developed for monitoring ice deposition. This paper presents the first use of UHF RFID tags for wireless RF ice sensing applications. Despite its low permittivity, the existence of ice as a superstrate on a planar ultra-thin dipole antenna can lower the resonance frequency of the antenna significantly. The RFID tags, having a measured unloaded range of 9.4 m, were evaluated for remotely detecting the formation of ice in various scenarios and up to 10~m from the reader, as well as monitoring the ice thawing, based on the Relative Signal Strength (RSS) in a phase-free approach. Unlike conventional RSS-based sensing approaches where the tag's read-range is reduced as the RSS decreases in response to the stimulant, the ice superstrate improves the impedance matching of the tags, maintaining a 10 m loaded read-range with over 12 dB ice-sensitivity, in an echoic multi-path environment. The long range and high sensitivity show that UHF RFID is a promising method of detecting and monitoring ice formation and thawing in future smart cities.

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“…Therefore, solutions on this way can be categorized based on the adopted strategy to modulate turn-on instant and conduction angle. As an example, some works introduced architectures where auxiliary delay cells are inserted with the aim to adjust the times when the MOSFET have to switch from cut-off to conduction, and vice-versa [36]. Similar effect can be obtained by acting on the effective threshold of the comparator.…”

Section: The State-of-the-art Of Ac-dc Convertersmentioning

confidence: 99%

A Review of Power Management Integrated Circuits for Ultrasound-Based Energy Harvesting in Implantable Medical Devices

2021

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This paper aims to review the recent architectures of power management units for ultrasound-based energy harvesting, while focusing on battery-less implantable medical devices. In such systems, energy sustainability is based on piezoelectric devices and a power management circuit, which represents a key building block since it maximizes the power extracted from the piezoelectric devices and delivers it to the other building blocks of the implanted device. Since the power budget is strongly constrained by the dimension of the piezoelectric energy harvester, complexity of topologies have been increased bit by bit in order to achieve improved power efficiency also in difficult operative conditions. With this in mind, the introduced work consists of a comprehensive presentation of the main blocks of a generic power management unit for ultrasound-based energy harvesting and its operative principles, a review of the prior art and a comparative study of the performance achieved by the considered solutions. Finally, design guidelines are provided, allowing the designer to choose the best topology according to the given design specifications and technology adopted.

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A Dual-Mode Nested Rectifier for Ambient Wireless Powering in CMOS Technology

Cited by 23 publications

References 46 publications

A 900 MHz, Wide-Input Range, High-Efficiency, Differential CMOS Rectifier for Ambient Wireless Powering

A 900 MHz, Wide-Input Range, High-Efficiency, Differential CMOS Rectifier for Ambient Wireless Powering

Wireless Ice Detection and Monitoring using Flexible UHF RFID Tags

A Review of Power Management Integrated Circuits for Ultrasound-Based Energy Harvesting in Implantable Medical Devices

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