Results 41 to 50 of about 561,026 (203)

A ULA-Based MWC Discrete Compressed Sampling Structure for Carrier Frequency and AOA Estimation

IEEE Access, 2017
In this paper, we propose a new wideband digital receiver based on the modulated wideband converter (MWC) discrete compressed sampling (CS) structure, and we further propose a uniform linear array (ULA)-based MWC discrete CS structure to estimate the ...
Tao Chen, Lizhi Liu, Dapeng Pan
doaj   +1 more source

Modulated Wideband Converter Compressed Sensing Spectrum Reconstruction in Multi-Level Power of Transmitters Signal Scenarios

, 2021
International audienceThis paper studies the impacts of transmitters power levels on spectrum reconstruction performances in order to monitor a wideband spectrum.
Gautier, Roland, Fiche, Anthony, Nguyen, Lap, Luat   +2 more
core  

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Drop‐on‐Demand Printed Negative Dielectric Anisotropy Liquid Crystal Droplets for Adaptive Complex Beam Manipulation and Assessment

Advanced Functional Materials, EarlyView.
Printed negative‐dielectric‐anisotropy liquid‐crystal droplets enable multidimensional full‐vectorial optical‐field sensing across polarization, phase, and wavelength, while also generating tunable skyrmionic‐like complex optical fields. ABSTRACT Adaptive manipulation of vectorial optical fields is important for optical metrology, imaging, and ...
Jinge Guo, Xuke Qiu, Runchen Zhang, Qihao Han, Liangyu Deng, Yishun Lu, Zimo Zhao, Mengmeng Li, Waqas Kamal, Junseok Ma, Yongge Ma, Steve J. Elston, Alfonso A. Castrejón‐Pita, Stephen M. Morris, Chao He   +14 more
wiley   +1 more source

Replication Data for: Continuous wideband microwave-to-optical converter based on room-temperature Rydberg atoms

, 2023
This dataset contains data for figures presented in the manuscript "Continuous wideband microwave-to-optical converter based on room-temperature Rydberg ...
Borówka, Sebastian, Parniak, Michał, Mazelanik, Mateusz, Pylypenko, Uliana   +3 more
core   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

Advanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee, Junho Min, Yonas Tsegaye Megra, Min‐Hye Jeong, Hwi Je Woo, Jaewon Han, Junheon Ha, Gyunghyun Jang, Young Jae Song, Hyun‐Soo Ra, Hoon Hahn Yoon, Jong‐Soo Lee   +11 more
wiley   +1 more source

Property Investigation on the Additive White Gaussian Noise After Sub-Nyquist Sampling

IEEE Access, 2019
The sub-Nyquist sampling (SNS) has emerged as an appealing technique for wideband signal sampling and has found its applications in many areas, such as, cognitive radios, radar and medical imaging, etc..
Tierui Gong, Zhifeng Liu, Chuang Xie, Zhijia Yang   +3 more
doaj   +1 more source

Random Acquisition in Compressive Sensing: A Comprehensive Overview

, 2021
Compressive sensing has the ability of reconstruction of signal/image from the compressive measurements which are sensed with a much lower number of samples than a minimum requirement by Nyquist sampling theorem.
Cabral, Thales Wulfert, González-Crespo, Rubén, Luiz, Max Mateus, Khosravy, Mahdi, Gupta, Neeraj, González-Crespo, Rubén (1), Neeraj Gupta, Ruben Gonzalez Crespo, Mahdi Khosravy, Max Mateus Luiz, Thales Wulfert Cabral   +10 more
core   +1 more source

Critical Coupling in Semi‐Trasparent Fano Resonators for Photothermal Converters

Advanced Functional Materials, EarlyView.
An ultrathin metal–insulator multilayer architecture is engineered to exploit Fano‐resonant critical coupling, completely suppressing optical reflectance while achieving a balanced 50:50 trade‐off between absorbance and transmittance. Upon laser excitation at resonance, the metamaterial generates intense localized heat (ΔT≈550∘C$\Delta T {\approx }550^\
Giuseppe Emanuele Lio, Giuseppe Nicoletta, Roberto Caputo, Antonio Ferraro   +3 more
wiley   +1 more source

A Sub-Nyquist Radar Electronic Surveillance System

IEEE Access, 2018
The modulated wideband converter (MWC) is well-known for a sub-Nyquist wideband sampling capability based on compressed sensing (CS) theory. In this paper, our goal is to use the MWC as a base to design a sub-Nyquist radar electronic surveillance (ES ...
Jeong Park, Jehyuk Jang, Sanghun Im, Heung-No Lee   +3 more
doaj   +1 more source