Results 31 to 40 of about 500 (164)
Enhancement of VCO Linearity and Phase Noise by Implementing Frequency Locked Loop [PDF]
, 2007 This paper investigates the on-chip implementation of a frequency locked loop (FLL) over a VCO that decreases the phase noise and linearizes the transfer function.
Kenn Christensen +5 more
core +1 more source
New sogi-fll grid frequency monitoring with a finite state machine approach for better response in the face of voltage sag and swell faults [PDF]
, 2020 The SOGI-FLL (Second-Order Generalized Integrator–Frequency-Locked Loop) is a well-known and simple adaptive filter that allows for estimating the parameters of grid voltage with a small computational burden.
Al-Turki, Y.A. +4 more
core +2 more sources
, 2009 Increasing penetration of distributed generation within electricity networks leads to the requirement for cheap, integrated, protection and control systems.
Burt, G.M. +2 more
core +1 more source
High Dynamic Optimized Carrier Loop Improvement for Tracking Doppler Rates
Journal of Electrical and Computer Engineering, 2015 Mathematical analysis and optimization of a carrier tracking loop are presented. Due to fast changing of the carrier frequency in some satellite systems, such as Low Earth Orbit (LEO) or Global Positioning System (GPS), or some planes like Unmanned ...
Amirhossein Fereidountabar +2 more
doaj +1 more source
Sensors, 2015 In this paper, the efficiency of the gyroscopic mounting method is studied for a highly dynamic GNSS receiver’s reference oscillator for reducing signal loss.
Maryam Abedi, Tian Jin, Kewen Sun
doaj +1 more source
Synchronous vibration suppression of magnetic bearing systems without angular sensors
CES Transactions on Electrical Machines and Systems, 2021 Active Magnetic Bearing (AMB) levitates rotor by magnetic force without friction, and it can provide active control force to suppress vibration while rotating. Most of vibration suppressing methods need angular speed sensors to obtain rotating speed, but
Hongbo Sun, Dong Jiang, Jichang Yang
doaj +1 more source
Improved generalised integrator for optimal dispatch of SyRG‐based pico‐hydro‐PV system
IET Energy Systems Integration, 2022 The fluctuating outputs from renewable energy sources (RESs) and variable load power demand deteriorate the current quality, thus an improved generalised integrator with a frequency‐locked loop (IGI‐FLL) control strategy is used, which is not only easy ...
Rohini Sharma, Bhim Singh, Seema Kewat
doaj +1 more source
Multi-Parameter Adaptive Notch Filter (MPANF) for Enhanced Interference Mitigation
Navigation, 2023 Interference signals degrade global navigation satellite system (GNSS) performance and must be mitigated. Chirp signals can be mitigated with an adaptive notch filter (ANF), but the dynamic behavior limits performance. An ANF determines the instantaneous
Johannes Rossouw van der Merwe +4 more
doaj +1 more source
Duty‐Cycle Distortion Tolerable Frequency Detector for Reference‐Less Clock and Data Recovery
Electronics Letters, Volume 62, Issue 1, January/December 2026.ABSTRACT This letter proposes a duty‐cycle‐distortion (DCD)‐tolerant frequency detector (FD) for reference‐less clock and data recovery (CDR) systems. The proposed FD employs a two‐unit‐interval(2‐UI) windowing to suppress false frequency‐up/down(FUP/FDN) events caused by DCD‐induced 1‐UI variation in conventional XBBPDs.
Jongmin Park, Jinwook Burm
wiley +1 more source
Noise Performance of Frequency-Locked Loop Based on Pilot Signal
, 2011 In contrast with Phase-Locked Loop (PLL), Frequency Locked Loop (FLL) has better dynamic performance. There were papers dealing with noise performance of FLL.
Hong, Yifan +11 more
core +1 more source