Articles with "fully passive" as a keyword



Structural response and energy extraction of a fully passive flapping foil

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Published in 2017 at "Journal of Fluids and Structures"

DOI: 10.1016/j.jfluidstructs.2017.05.002

Abstract: Abstract The structural response and energy extraction of a foil undergoing two-degree-of-freedom fully passive flapping motions in a two-dimensional flow are numerically investigated at R e = 400 . The simulations of the fluid–structure interaction… read more here.

Keywords: passive flapping; response energy; energy extraction; structural response ... See more keywords

Experimental investigation of the dynamic behaviour of a fully passive flapping foil hydrokinetic turbine

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Published in 2019 at "Journal of Fluids and Structures"

DOI: 10.1016/j.jfluidstructs.2019.04.012

Abstract: Abstract The dynamic behaviour of a fully passive flapping foil hydrokinetic turbine is experimentally investigated at a Reynolds number of 6 × 104. Previous numerical simulations showed that, depending on the location of the pitching… read more here.

Keywords: fully passive; dynamic behaviour; behaviour fully; foil ... See more keywords

A parametric study and optimization of the fully-passive flapping-foil turbine at high Reynolds number

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Published in 2020 at "Renewable Energy"

DOI: 10.1016/j.renene.2019.08.013

Abstract: Abstract The dynamics of a fully-passive flapping-foil turbine, operating at a Reynolds number of 3.9 × 10 6 , is studied via two-dimensional fluid-structure numerical simulations. The foil is allowed to move freely, but only,… read more here.

Keywords: fully passive; foil turbine; foil; passive flapping ... See more keywords

Fully passive model-based numerical analysis of the trailing-edge flexibility of hydrofoil on energy harvesting performance

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Published in 2024 at "Physics of Fluids"

DOI: 10.1063/5.0204772

Abstract: The oscillating hydrofoil, a device used for collecting environmentally friendly tidal energy, is the focus of the study. The flexibility of the hydrofoil's trailing edge can impact its surface pressure distribution, lift, and moment characteristics.… read more here.

Keywords: energy; harvesting performance; energy harvesting; fully passive ... See more keywords

Fully Passive Quantum Key Distribution

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Published in 2022 at "Physical Review Letters"

DOI: 10.1103/physrevlett.130.220801

Abstract: Passive implementations of quantum key distribution (QKD) sources are highly desirable as they eliminate side-channels that active modulators might introduce. Up till now, passive decoy-state and passive encoding BB84 schemes have both been proposed. Nonetheless,… read more here.

Keywords: state; quantum key; decoy state; fully passive ... See more keywords

A 3.78-GHz Type-I Sampling PLL With a Fully Passive KPD-Doubled Primary–Secondary S-PD Measuring 39.6-fsRMS Jitter, −260.2-dB FOM, and −70.96–dBc Reference Spur

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Published in 2023 at "IEEE Transactions on Circuits and Systems I: Regular Papers"

DOI: 10.1109/tcsi.2023.3236309

Abstract: This paper reports an active-buffer-free type-I sampling phase-locked loop (S-PLL). We innovate a fully-passive sampling phase detector with passive-gain multiplication after the sampler, resulting in a stably-boosted PD gain and better linearity. Together with a… read more here.

Keywords: ghz type; reference; sampling pll; type sampling ... See more keywords

Fully Passive RF Wake-Up Receiver Including a Small Loop Antenna With −30.7-dBm Sensitivity at 26-kbps Bitrate

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Published in 2024 at "IEEE Transactions on Circuits and Systems II: Express Briefs"

DOI: 10.1109/tcsii.2023.3301892

Abstract: This brief presents a fully passive RF wake-up receiver (WuRX) fabricated in a 130nm CMOS process with a matched small loop antenna. The WuRX consists of a high-sensitivity RF energy harvester that supplies the circuitry… read more here.

Keywords: passive wake; small loop; sensitivity; fully passive ... See more keywords

A 150-MS/s, 65-dB SNDR Fully Passive Bandpass Noise-Shaping SAR ADC

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Published in 2024 at "IEEE Transactions on Circuits and Systems II: Express Briefs"

DOI: 10.1109/tcsii.2023.3320156

Abstract: A fully passive bandpass (BP) noise-shaping (NS) successive approximation register (SAR) analog-to-digital converter (ADC) operating at a sampling rate of 150 MS/s is proposed. The proposed ADC structure is acquired by applying z to–z 2… read more here.

Keywords: passive bandpass; adc; bandpass noise; fully passive ... See more keywords

A Fully Passive Noise-Shaping SAR ADC Utilizing Last-Bit Majority Voting and Cyclic Dynamic Element Matching Techniques

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Published in 2022 at "IEEE Transactions on Very Large Scale Integration (VLSI) Systems"

DOI: 10.1109/tvlsi.2022.3190927

Abstract: This article presents a fully passive noise-shaping (NS) successive approximation register (SAR) analog-to-digital converter (ADC) that can be compatible with dynamic voltage and frequency scaling (DVFS) schemes while offering a 12-bit resolution for Internet-of-Things (IoT)… read more here.

Keywords: noise; bit; passive noise; adc ... See more keywords

Disco Intelligent Omni-Surfaces: 360° Fully-Passive Jamming Attacks

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Published in 2025 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2025.3581208

Abstract: Intelligent omni-surfaces (IOSs) with 360° electromagnetic radiation significantly improves the performance of wireless systems, while an adversarial IOS also poses a significant potential risk for physical layer security. In this paper, we propose a “DISCO”… read more here.

Keywords: dios based; omni surfaces; intelligent omni; passive jamming ... See more keywords