Efficiency enhanced voltage multiplier circuit for RF energy harvesting

Chouhan, Shailesh Singh; Nurmi, Marko; Halonen, K.

doi:10.1016/j.mejo.2015.11.012

Cited by 24 publications

(5 citation statements)

References 29 publications

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“…Nevertheless, the attempt to minimize conduction loss entails a compromise of increased reversion loss, which negatively impacts the charge pump's overall performance. Over the past few decades, a wide range of techniques for improving CP performance has been documented in the literature [2], [11], [12], [13], [14], [15], [16], aimed at addressing the aforementioned challenges. Despite significant research focused on optimizing CP topologies, there remains potential for further innovation in architectural improvements.…”

Section: Consists Of An Oscillatormentioning

confidence: 99%

A Subthreshold Operation Series-Parallel Charge Pump Incorporating Dynamic Source-Fed Oscillator for Wide-Input-Voltage Energy Harvesting Application

Kee,

Ramiah,

Churchill

et al. 2023

IEEE Access

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This work proposes a CMOS reconfigurable charge pump (CP) for a low-voltage energy harvesting system. It utilizes the low effective resistance from the parallel CP to enhance its power conversion efficiency (PCE). The CP exhibits an adaptive configuration with different stages depending on the input voltage, changing its voltage conversion ratio (VCR) to limit the output voltage under 1.8-V. Additionally, this work develops a novel dynamic source-fed oscillator that modulates the oscillating frequency by utilizing a dynamic source for the ring-voltage controlled oscillator (RVCO). The independent source from the RVCO and the clock-generating units from the proposed technique permit the implementation of frequency modulation without affecting the clock amplitude. Fabricated in 65-nm CMOS, the proposed prototype measures 62% peak PCE with an input voltage range of 0.26-V to 0.64-V.INDEX TERMS Reconfigurable charge pump (CP), ring-voltage controlled oscillator (RVCO), dc-to-dc converter, low power energy harvesting, CMOS, power conversion efficiency (PCE).

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Section: Consists Of An Oscillatormentioning

confidence: 99%

A Subthreshold Operation Series-Parallel Charge Pump Incorporating Dynamic Source-Fed Oscillator for Wide-Input-Voltage Energy Harvesting Application

Kee,

Ramiah,

Churchill

et al. 2023

IEEE Access

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“…To pair the NFC sensor with the developed VEH, further optimizations have been performed on the hardware and the firmware of the previously reported NFC sensor. To allow for an extraction of sufficient electrical energy even from a low amplitude vibration, a double-stage voltage multiplier circuit [66], [67] comprising of two capacitors (10 μF each) and two diodes (Small-signal Schottky Diode, part number BAT85-T/R) has been employed for the rectification of the incoming AC signal from the VEH. Following the rectification stage, a 560 μF (20 V) conductive polymer aluminium solid capacitor (SEPF series) has been added to store the energy and to supply it to the NFC sensor hardware circuitry when required.…”

Section: Design and Fabrication Of The Nfc-based Sensor Nodementioning

confidence: 99%

A Concertina-Shaped Vibration Energy Harvester-Assisted NFC Sensor With Improved Wireless Communication Range

Paul¹,

Gawade²,

Simorangkir³

et al. 2022

IEEE Internet Things J.

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The explosive growth of wireless sensor platforms and their emerging wide range of application areas make the development of a sustainable and robust power source, an essential requirement to enable widespread deployment of these wireless devices. As a solution to this cardinal issue, this article reports the design and fabrication of a resonant vibration energy harvester (VEH) that comprises interleaved springs, manifesting a concertina-shaped structure that can enable large mechanical amplitudes of oscillation. Within a relatively small footprint (9 cm 3 ), this concertina-VEH yields a large power density of 455.6 µW/cm 3 g 2 while operating at a resonant frequency of 75 Hz. Additionally, the feasibility of the implemented VEH to support near field communication (NFC)-based wireless sensor platform, that is yet uncharted, is also investigated in this work. A very low-power consumption NFC wireless sensor node has been designed and developed for this purpose. The developed concertina VEH has been employed to power the electronics interface of this NFC sensor. Using mechanical energy derived from as low as 0.2-g excitation, our study shows that the VEH can enhance the electromagnetic interaction between the transmitting antenna and the reader, resulting in a 120% increase in wireless communication range for the NFC sensor node. Such a high-performance energy harvester-assisted NFC sensor node has the potential to be used in a wide range of Internet of Things (IoT) platforms as a reliable and sustainable power solution.

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“…Yuan et al [70] studied the threshold voltage compensation scheme to improve the effects of voltage multiplier temperature and process variability. Chouhan et al [71] designed a new cascading method for voltage multiplication circuits, which allows the rectifier to have better power conversion efficiency at lower RF power.…”

Section: Rfid Sensor Techniques—technical Progresses and Innovativmentioning

confidence: 99%

Radio Frequency Identification and Sensing Techniques and Their Applications—A Review of the State-of-the-Art

Cui

Zhang

Gao

et al. 2019

Sensors

140

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Radio Frequency Identification (RFID) sensors, integrating the features of Wireless Information and Power Transfer (WIPT), object identification and energy efficient sensing capabilities, have been considered a new paradigm of sensing and communication for the futuristic information systems. RFID sensor tags featuring contactless sensing, wireless information transfer, wireless powered, light weight, non-line-of-sight transmission, flexible and pasteable are a critical enabling technology for future Internet-of-Things (IoT) applications, such as manufacturing, logistics, healthcare, agriculture and food. They have attracted numerous research efforts due to their innovative potential in the various application fields. However, there has been a gap between the in-lab investigations and the practical IoT application scenarios, which has motivated this survey of this research to identify the promising enabling techniques and the underlying challenges. This study aims to provide an exhaustive review on the state-of-art RFID sensor technologies from the system implementation perspective by focusing on the fundamental RF energy harvesting theories, the recent technical progresses and commercial solutions, innovative applications and some RFID sensor based IoT solutions, identify the underlying technological challenges at the time being, and give the future research trends and promising application fields in the rich sensing applications of the forthcoming IoT era.

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Efficiency enhanced voltage multiplier circuit for RF energy harvesting

Cited by 24 publications

References 29 publications

A Subthreshold Operation Series-Parallel Charge Pump Incorporating Dynamic Source-Fed Oscillator for Wide-Input-Voltage Energy Harvesting Application

A Subthreshold Operation Series-Parallel Charge Pump Incorporating Dynamic Source-Fed Oscillator for Wide-Input-Voltage Energy Harvesting Application

A Concertina-Shaped Vibration Energy Harvester-Assisted NFC Sensor With Improved Wireless Communication Range

Radio Frequency Identification and Sensing Techniques and Their Applications—A Review of the State-of-the-Art

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