Results 11 to 20 of about 77,045 (305)
An All-Digital Optical Phase-Locked Loop Suitable for Satellite Downlinks
Photonics, 2023 The optical signal propagation used in satellite uplinks and downlinks is influenced by absorption, scattering, and changes in the atmospheric refractive index or turbulence, causing optical signal attenuation.
Jognes Panasiewicz +4 more
doaj +1 more source
Energies, 2017 The control system of a doubly-fed adjustable-speed pumped-storage hydropower plant needs phase-locked loops (PLLs) to obtain the phase angle of grid voltage.
Wei Luo, Jianguo Jiang, He Liu
doaj +1 more source
Understanding of the Coherent Demodulation with Phase-Locked Loop
MATEC Web of Conferences, 2018 The phase-locked loop (PLL) technology is a very important technology in the communication field. With the development of electronic technology toward digitalization, the phase-locked processing of signal needs to be realized in digital way.
Zhai Bingcong
doaj +1 more source
A Resolution Control Loop for TDC-Based Phase Detectors in ADPLLs
IEEE Access, 2023 This paper proposes a resolution control loop that runs in background to control the time resolution of a mid-rise Time to Digital Converter (TDC) used as a phase detector in All-Digital Phase Locked Loops (ADPLLs).
Abdelrahman Habib +2 more
doaj +1 more source
An all-digital phase-locked loop based on variable phase accumulator
Dianzi Jishu Yingyong, 2019 This paper presents a novel all-digital phase-locked loop with variable phase accumulator circuit structure. The design of the system is completed by using EDA technology, and the system simulation experiment is carried out by using ModelSim software ...
Yang Mengwei, Tian Fan, Shan Changhong
doaj +1 more source
Design of a 3 GHz fine resolution LC DCO [PDF]
, 2017 In this thesis, the design of a fine resolution LC digitally controlled oscillator (DCO) is introduced. Two NMOS varactor banks are used to achieve 12 bits medium and fine frequency tuning.
Zhao, Xuming, active 21st century
core +1 more source
All digital phase-locked loop / Visiškai skaitmeninė fazės derinimo kilpa
Mokslas: Lietuvos Ateitis, 2013 The paper reviews working principles of phase-locked loop and drawbacks of classical PLL structure in nanometric technologies. It is proposed to replace the classical structure by all-digital phase-locked loop structure. Authors described the main blocks
Marijan Jurgo
doaj +1 more source
A smart DPLL for robust carrier tracking systems using uncertain rule-based IT2 fuzzy controllers
Engineering Science and Technology, an International Journal, 2020 The carrier tracking synchronizes the receiver and transmitter oscillators with each other’s and is adopted as a closed-loop structure known as the phase-locked loop (PLL).
Mohieddin Moradi, Mehdi Ehsanian
doaj +1 more source
Optimum digital phase-locked loops
Electronics 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
Applied Sciences, 2018 This paper studies a second order generalized integrator-frequency locked loop (SOGI-FLL) control scheme applicable for 3-phase alternating current/direct current (AC/DC) pulse width modulation (PWM) converters used in DC distribution systems.
Jin-Wook Kang +5 more
doaj +1 more source