Results 11 to 20 of about 20,323 (302)

PRINCIPLES OF PHASE-LOCKED LOOPS MATHEMATICAL MODELS CONSTRUCTION

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The results of various embodiments study of the hardware and software phase-locked loops, suggesting possible variants of generalized mathematical models of the multi-systems as well as devices with a cyclic interrupt mode-locked are presented.
M. P. Batura   +3 more
doaj   +1 more source

Designing Of Pulse Phase-Locked Loops

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2006
The paper considers pulse phase-locked loops (PPLL) in which switching of structure and pa­rameters is used for improvement of dynamic and spectral characteristics Classification of existing switching algorithms is given in the paper.
A. A. Deryushev   +2 more
doaj   +1 more source

Techniques for automatic on chip closed loop transfer function monitoring for embedded charge pump phase locked loops. [PDF]

open access: yes, 2003
Charge Pump Phase locked loops are used in a variety of applications, including on chip clock synthesis, symbol timing recovery for serial data streams, and generation of frequency agile high frequency carrier signals.
Burbidge, Martin J.   +5 more
core   +1 more source

A mode switching based transient ride‐through phase‐locked loop

open access: yesIET Power Electronics, 2023
In the case of grid voltage quality problems, the traditional phase‐locked loop (PLL) is hard to detect the accurate grid frequency and phase during the transient response, which will be detrimental to the transient synchronous stability of grid ...
Yiwen Fan   +4 more
doaj   +1 more source

Radar Waveform Generator with Fuzzy Frequency Regulation [PDF]

open access: yesInternational Journal of Telecommunications
: The Phase-Locked Loop (PLL) is a common functional component in many electrical systems. Phase-locked loops (PLLs) are closed-loop feedback-driven devices producing a signal depending on the frequency and phase of reference sig-nal that comes in.
Ahmed Salem   +2 more
doaj   +1 more source

Homodyne coherent detection of ASK and PSK signals performed by a subcarrier optical phase-locked loop [PDF]

open access: yes, 2005
Optical transmission systems based on homodyne coherent detection of 2-ASK and pilot carrier 2-PSK signals have been implemented. ASK data has been transmitted at 2.5 Gbps, while 2.5 Gbps and 10 Gbps PSK systems have been tested.
S. Camatel   +4 more
core   +1 more source

GPS Receiver VFLL-Assisted PLL High Dynamic Weak Signal Tracking Based on a Maximum Likelihood Estimation

open access: yesApplied Sciences, 2022
This paper proposes a GPS receiver vector frequency-locked loop-assisted phase-locked loop (VFAPLL) structure based on the maximum likelihood estimation (MLE) method for highly dynamic weak-signal scenarios. In this structure, the loop structure does not
Na Li, Shufang Zhang, Yi Jiang
doaj   +1 more source

Structural Resemblance Between Droop Controllers and Phase-Locked Loops

open access: yesIEEE Access, 2016
It is well known that droop control is fundamental to the operation of power systems and now the parallel operation of inverters, while phase-locked loops (PLLs) are widely adopted in modern electrical engineering.
Qing-Chang Zhong, Dushan Boroyevich
doaj   +1 more source

Phase jitter dynamics of first-order digital phase-locked loops with frequency-modulated input

open access: yes, 2008
IEEE International Symposium on Circuits and Systems (ISCAS), Seattle, USA, 18-21 May 2008Inherent to digital phase-locked loops is frequency quantization in the number-controlled oscillator which prevents the loop from locking exactly onto its reference
Tertinek, Stefan   +5 more
core   +1 more source

Exact lock-in range for classical phase-locked loops

open access: yes, 2021
Phase-locked loops (PLLs) are are widely used in various applications: Wireless communications, GPS navigation, gyroscope systems, computer architectures, electrical grids, and others. PLLs are inherently non-linear, but in engineering practice, they are
Blagov, Mikhail
core   +1 more source

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