Results 21 to 30 of about 36,961 (291)

Research on an Active Hydrogen Maser Digital Circuit Control System Based on FPGA

open access: yesSensors, 2023
A hydrogen maser is a high-precision time measurement instrument with high frequency stability and low frequency drift, which is widely used in satellite navigation, ground time keeping, frequency measurement, and other fields.
Wangwang Hu   +6 more
doaj   +1 more source

A Concept of Synchronous ADPLL Networks in Application to Small-Scale Antenna Arrays

open access: yesIEEE Access, 2018
In this paper, we introduce a reconfigurable oscillatory network that generates a synchronous and distributed clocking signal. We propose an accurate model of the network to facilitate the study of its design space and ensure that it operates in its ...
Eugene Koskin   +2 more
doaj   +1 more source

Digital Phase-Locked Loops: Exploring Different Boundaries

open access: yesIEEE Open Journal of the Solid-State Circuits Society
This article examines the research area of digital phase-locked loops (DPLLs), a critical component in modern electronic systems, from wireless communication devices to RADAR systems and digital processors. As the demands for higher integration levels in
Yuncheng Zhang   +2 more
doaj   +1 more source

FPGA implementation of reconfigurable ADPLL network for distributed clock generation [PDF]

open access: yes, 2011
International audienceThis paper presents an FPGA platform for the design and study of network of coupled All-Digital Phase Locked Loops (ADPLLs), destined for clock generation in large synchronous System on Chip (SoC).
Anceau, François   +9 more
core   +3 more sources

Evaluation of Adaptive Loop-Bandwidth Tracking Techniques in GNSS Receivers

open access: yesSensors, 2021
Global navigation satellite system (GNSS) receivers use tracking loops to lock onto GNSS signals. Fixed loop settings limit the tracking performance against noise, receiver dynamics, and the current scenario. Adaptive tracking loops adjust these settings
Iñigo Cortés   +4 more
doaj   +1 more source

Stability Impacts of an Alternate Voltage Controller (AVC) on Wind Turbines with Different Grid Strengths

open access: yesEnergies, 2023
This paper studies the stability impact of the alternate voltage controller’s (AVC) low-pass filter (LPF) in a wind turbine’s grid-connected voltage source converter (VSC).
Dimitrios Dimitropoulos   +2 more
doaj   +1 more source

Optimum digital phase-locked loops

open access: yesElectronics Letters, 1975
The optimum discrete filters to track phase and frequency steps in the presence of additive white Gaussian noise are derived, and are found to be equivalent to the baseband models of 1st- and 2nd-order digital phase-locked loops, respectively. Practical design parameters are presented.
A.J. Ruddell, A.M. Rosie
openaire   +1 more source

Analysis and equalization of data-dependent jitter [PDF]

open access: yes, 2006
Data-dependent jitter limits the bit-error rate (BER) performance of broadband communication systems and aggravates synchronization in phase- and delay-locked loops used for data recovery.
Buckwalter, James F., Hajimiri, Ali
core   +1 more source

Acoustic Backscatter Communication and Power Transfer for Batteryless Wireless Sensors

open access: yesSensors, 2023
Sensors for industrial and structural health monitoring are often in shielded and hard-to-reach places. Acoustic wireless power transfer (WPT) and piezoelectric backscatter enable batteryless sensors in such scenarios.
Peter Oppermann, Bernd-Christian Renner
doaj   +1 more source

Phasemeter core for intersatellite laser heterodyne interferometry: modelling, simulations and experiments

open access: yes, 2013
Inter satellite laser interferometry is a central component of future space-borne gravity instruments like LISA, eLISA, NGO and future geodesy missions.
Bykov, Iouri   +6 more
core   +1 more source

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