Results 61 to 70 of about 17,714 (263)
مهندسی مخابرات جنوبThis paper comprehensively investigates how the control voltage settles in Voltage Controlled Oscillators (VCO) by considering all non-ideal factors in phase lock loop circuits. Also, the different structures of the phase detector and their effect on the
Reihaneh Nazaraghaei +2 more
doaj
A grid frequency estimation method based on moving average filter half-tangent phase-locked loop
Diance yu yibiaoThis paper proposes a half-tangent phase-locked loop (HTan-PLL) with a moving average filter (MAF) for estimating grid frequency. The proposed PLL utilizes a half-tangent phase detector (PD) and introduces MAF into the phase-locked loop to address ...
WANG Wenguo, ZHANG Ben
doaj +1 more source
Generating Unconventional Spin‐Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films
Advanced Materials, EarlyView.ABSTRACT A key aim in spintronics is to achieve current‐induced magnetization switching via spin‐orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across ferromagnet/heavy‐metal devices, giving variations in thickness, composition, or interface quality.
Lauren J. Riddiford +9 more
wiley +1 more source
Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix
Advanced Materials, EarlyView.3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández +15 more
wiley +1 more source
An Efficient Phase-Locked Loop for Distorted Three-Phase Systems
Energies, 2017 This paper proposed an efficient phase-locked loop (PLL) that features zero steady-state error of phase and frequency under voltage sag, phase jump, harmonics, DC offsets and step-and ramp-changed frequency. The PLL includes the sliding Goertzel discrete
Yijia Cao +4 more
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Theoretical Upper and Lower Limits for Normalized Bandwidth of Digital Phase-Locked Loop in GNSS Receivers. [PDF]
Sensors (Basel), 2023 Song YJ, Pany T, Won JH.
europepmc +1 more source
Advanced Materials, EarlyView.Co1/3TaS2${\rm Co}_{1/3}{\rm TaS}_{2}$ hosts a triple‐Q noncoplanar antiferromagnetic state with coexisting Z3${\rm Z}_3$ electronic nematicity. We report rotational hysteresis observed in both magnetoresistance and magnetic torque, revealing strongly pinned in‐plane weak ferromagnetic moments in the triple‐Q phase and the magnetism‐driven nature of ...
Joonyoung Choi +5 more
wiley +1 more source
An Improved Single Phase-locked Loop Based on Synchronous Reference Frame
Kongzhi Yu Xinxi Jishu, 2019 Accurate tracking of phase angle, frequency and amplitude of the utility voltage is essential to ensure correct operation of grid connected inverters. The commonly used single phase-locked loop(SPLL) has poor dynamic characteristics due to the problem of
TANG Jianyu +4 more
doaj
Advanced Materials, EarlyView.Uniform monolayer Cr2Ge2Te6 films are achieved on Si substrates by molecular beam epitaxy. Intrinsic ferromagnetism with perpendicular magnetic anisotropy is established in the films by anomalous Hall effect and superconducting quantum interference device measurements, albeit with strong magnetic fluctuations characteristic of its 2D nature.
Pengfei Ji +15 more
wiley +1 more source
Dynamical response and noise limit of a parametrically pumped microcantilever sensor in a Phase-Locked Loop. [PDF]
Sci Rep, 2023 Mouro J +3 more
europepmc +1 more source