Results 11 to 20 of about 3,295,289 (198)
Techniques for automatic on chip closed loop transfer function monitoring for embedded charge pump phase locked loops. [PDF]
, 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. +2 more
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Phase Locked Loop Test Methodology [PDF]
, 2008 Phase locked loops are incorporated into almost every large-scale mixed signal and digital system on chip (SOC). Various types of PLL architectures exist including fully analogue, fully digital, semi-digital, and software based.
Burbidge, Martin, Richardson, Andrew
core +4 more sources
Simple digital only test approach for embedded charge-pump phase-locked loops. [PDF]
, 2001 Techniques for a simple automated test approach for high performance fully embedded charge-pump phase-locked loops (CP-PLLs) are explained. The test approach is focused towards non-invasive high volume production testing of PLLs using digital only ...
Burbidge, M., Richardson, Andrew M. D.
core +4 more sources
Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems
IEEE Access, 2020 The frequency-locked loop based on a second-order generalized integrator has been widely used in grid synchronization systems but featuring unfavorable harmonics filtering performance. To solve this issue, a frequency-locked loop based on multiple second-
Jiayi Geng +5 more
doaj +1 more source
Phase jitter dynamics of first-order digital phase-locked loops with frequency-modulated input [PDF]
, 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
Sensors, 2017 Frequency-locked detector (FLD) has been widely utilized in tracking loops of Global Positioning System (GPS) receivers to indicate their locking status. The relation between FLD and lock status has been seldom discussed.
Tian Jin +5 more
doaj +1 more source
Radar Waveform Generator with Fuzzy Frequency Regulation [PDF]
International 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
Small-Signal Model and Stability Control for Grid-Connected PV Inverter to a Weak Grid
Energies, 2021 This paper presents a small signal stability analysis to assess the stability issues facing PV (photovoltaic) inverters connected to a weak grid. It is revealed that the cause of the transient instabilities, either high-frequency or low-frequency ...
Antoine Musengimana +3 more
doaj +1 more source
IEEE Access, 2020 The phase-locked loop of grid-connected inverters affects their output impedance characteristics and stability. Based on the NPC, three-level LCL grid-connected inverter, this article first analyzes the frequency characteristics of the improved moving ...
Wei Luo, Dafang Wei, Jianguo Jiang
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Identification of Vibration Parameters in a Spacecraft using Kalman Filters, Numerical Search and Phase-Locked Loops [PDF]
Modeling, Identification and Control, 2000 Communication in space requires antennas that are accurately pointed. Often antennas are mounted on lightly damped space structures, that are easily set into vibration, which decreases the pointing accuracy of the antennas.
Aage Skullestad
doaj +1 more source