Results 61 to 70 of about 41,452,026 (246)

Design and Implementation of a Digital Phase Locked Loop for GPS Synchronization

Algerian Journal of Signals and Systems
In this paper, a Digital Phase-Locked Loop (DPLL) for GPS synchronization is designed, implemented and tested. It consists of a Phase Frequency Detector (PFD), an RC Low-Pass Filter (LPF), and a Relaxation Voltage Controlled Oscillator (VCO).
Mouloud CHALLAL, Abderrahmane OUADI, Hamid BENTARZI, Abderazak CHERFI , Omar SAIDI   +4 more
doaj   +1 more source

Boosting Ferroelectricity: 2D and Polymer Ferroelectric Hybrids Enabling Ambipolar Nonvolatile MoS2 Memory Transistor

Advanced Science, EarlyView.
Two‐dimensional CuInP2S6 nanosheets are incorporated into a P(VDF‐TrFE) matrix to induce polarization‐cooperative ferroelectric coupling. The resulting P(VDF‐TrFE)/CuInP2S6 hybrid film exhibits reinforced ferroelectric ordering and reduced coercive electric fields compared with pristine P(VDF‐TrFE).
Yeonsu Jeong, Honglei Wang, Pietro Tordi, Ying Chieh Hu, Adrián Tamayo, Bing Wu, Hyun Soo Ahn, Zdenek Sofer, Jong Hoon Jung, Massimo Bonini, Paolo Samorì   +10 more
wiley   +1 more source

Data Driven Second Integral Sliding Mode Control for the Digital Phase-Locked Loop

IEEE Access
The high accuracy and flexibility of the digital phase-locked loop (DPLL) make it a versatile tool with a wide range of applications in modern sensor technology.
Haiqin Liu, Mingdong Hou, Guangye Li, Renming Yang, Yun Zhang   +4 more
doaj   +1 more source

A Versatile‐Designable Framework for Active and Programmable Shape‐Morphing Soft Matter Systems: From Inverse Design to Closed‐Loop Control

Advanced Science, EarlyView.
A versatile framework integrates addressable electrothermal actuation and strain‐constraint mechanisms to construct programmable shape‐morphing soft matter systems. By combining an analytical inverse design strategy for high‐fidelity 3D surface reconstruction with deep learning‐based closed‐loop control, this approach enables zero‐energy shape locking,
Kai Liu, Peiling Xie, Ruitong Song, Banghan Liu, Rui Guo, Jiu‐an Lv   +5 more
wiley   +1 more source

Development of portable orthogonal lock-in amplifier based on FPGA

Dianzi Jishu Yingyong, 2018
A portable orthogonal phase-locked amplifier for weak signal detection has been developed based on FPGA. First,the signal processing module receives the signal,does variable gain amplification on the signal and puts it through the power frequency noise ...
Xie Guihui, Zheng Xuchu, Zhao Tianming, Liu Zixu, Zhao Juan   +4 more
doaj   +1 more source

A Generative Neuro‐Symbolic AI for Protein Sequence Design

Advanced Science, EarlyView.
We introduce EffieDes, a neuro‐symbolic framework coupling deep learning‐based fitness landscape parameterization with exact automated reasoning. Unlike greedy sampling, EffieDes identifies sequences that globally optimize fitness while satisfying intricate design constraints.
Marianne Defresne, Delphine Dessaux, Samuel Buchet, Lucie Barthe, Liza Ammar‐Khodja, Bessam Azizi, Valentin Durante, Gianluca Cioci, Simon de Givry, Alain Roussel, Luis F. Garcia‐Alles, Thomas Schiex, Sophie Barbe   +12 more
wiley   +1 more source

Nanosecond channel-switching exact optical frequency synthesizer using an optical injection phase-locked loop (OIPLL) [PDF]

, 2004
Experimental results are reported on an optical frequency synthesizer for use in dynamic dense wavelength-division-multiplexing networks, based on a tuneable laser in an optical injection phase-locked loop for rapid wavelength locking.
Duser, M, Lovell, T, Seeds, AJ, Renaud, CC, Silva, CFC, Puttnam, B, Bayvel, P   +6 more
core  

Performance Analysis of Zero Crossing DPLL with Linearized Phase Detector

International Journal of Information and Communication Technology Research, 2009
This work introduces a new structure of Zero Crossing Digital Phase Locked Loop with Arc Sine block (ASZCDPLL) to linearize the phase difference detection, and enhance the loop performance.
Qassim Nasir, Saleh AI-Araji
doaj  

A Rigid–Foldable Kirigami‐Inspired Metamorphic Mechanism With Programmable Motion Modes and Self‐Locking

Advanced Science, EarlyView.
Geometric constraint reconfiguration enables a rigid–foldable kirigami‐inspired mechanism to switch between twisting, directional translation, and self‐locking states. By encoding multifunctionality directly into its architecture, the mechanism achieves multimodal motion and passive locking without reassembly, providing a compact platform for adaptive ...
Jianlin Wang, Zhongmin Song, Ketao Zhang
wiley   +1 more source

Digital phase-locked loop [PDF]

, 1975
An digital phase-locked loop is provided for deriving a loop output signal from an accumulator output terminal. A phase detecting exclusive OR gate is fed by the loop digital input and output signals.
Cliff, R. A.
core