Results 11 to 20 of about 6,749 (208)

Low Power Clock Generator Design With CMOS Signaling

open access: yesIEEE Open Journal of the Solid-State Circuits Society, 2021
The requirements for computing with higher energy efficiency in the datacenter and for longer battery life in laptop computers, cell phones, and other IoT devices while increasing performance with higher frequency and more cores, drive the needs for more
Yongping Fan, Ian A. Young
doaj   +1 more source

Frequency-Locked Loop Based on a Repetitive Controller for Grid Synchronization Systems

open access: yesIEEE 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

Frequency-Locked Detector Threshold Setting Criteria Based on Mean-Time-To-Lose-Lock (MTLL) for GPS Receivers

open access: yesSensors, 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

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

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

Small-Signal Model and Stability Control for Grid-Connected PV Inverter to a Weak Grid

open access: yesEnergies, 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

Impedance Modeling and Stability Analysis of the IMAF-PLL-Based NPC Three-Level LCL Grid-Connected Inverter

open access: yesIEEE 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
doaj   +1 more source

Integrated Circuit Signal Generation and Detection Techniques for Microwave and Sub-Millimeter Wave Signals [PDF]

open access: yes, 2012
The unabated reduction of device feature sizes in semiconductor processes, particularly in complementary metal-oxide semiconductor (CMOS) processes, has served as the enabling factor behind integrated electronic systems of ever increasing complexity and ...
Bohn, Florian
core   +1 more source

Fiber Ring Based Optical Frequency Comb Generator with Comb Line Spacing Tunability [PDF]

open access: yes, 2005
A fiber ring based Optical Frequency Comb Generator with tunability in comb line spacing, fast tuning of 10 MHz per step with speed much better than 0.1 s, and a high coherence is ...
Shillue, William P.   +11 more
core   +1 more source

Identification of Vibration Parameters in a Spacecraft using Kalman Filters, Numerical Search and Phase-Locked Loops [PDF]

open access: yesModeling, 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

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