Results 41 to 50 of about 545,717 (377)
Nature Communications, 2023 Metasurfaces have promising potential to revolutionize a variety of photonic and electronic device technologies. However, metasurfaces that can simultaneously and independently control all electromagnetics (EM) waves’ properties, including amplitude ...
Geng-Bo Wu +6 more
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A Compact Linear Microstrip Patch Beamformer Antenna Array for Millimeter-Wave Future Communication
Sensors5/6G is anticipated to address challenges such as low data speed and high latency in current cellular networks, particularly as the number of users overwhelms 4G and LTE capabilities.
Muhammad Asfar Saeed +2 more
doaj +1 more source
Convolution operations on time-domain digital coding metasurface for beam manipulations of harmonics
Nanophotonics, 2020 Time-domain digital coding metasurfaces have been proposed recently to achieve efficient frequency conversion and harmonic control simultaneously; they show considerable potential for a broad range of electromagnetic applications such as wireless ...
Zhang Cheng +10 more
doaj +1 more source
A compact high‐sensitivity tangential E‐probe with resonator and coupled balun
Electronics Letters, 2022 A compact high‐sensitivity probe for sensing up tangential E‐field is proposed and measured in this paper. The probe consists of an electric dipole with patches used to induce the tangential E‐field, a resonator made up of open circuit stubs (capacitor ...
Shang Zhang +4 more
doaj +1 more source
Deep Learning Coordinated Beamforming for Highly-Mobile Millimeter Wave Systems [PDF]
IEEE Access, 2018 Supporting high mobility in millimeter wave (mmWave) systems enables a wide range of important applications, such as vehicular communications and wireless virtual/augmented reality.
A. Alkhateeb +5 more
semanticscholar +1 more source
IEEE Open Journal of the Communications SocietyThis work investigates joint localization-synchronization and tracking in 5G and beyond. In particular, we target realistic circumstances where the theoretical assumptions of a perfect synchronous system and ideal transceivers no longer exist.
Deeb Assad Tubail +3 more
doaj +1 more source
Stochastic Geometry Modeling and Performance Evaluation of mmWave Cellular Communications
, 2015 In this paper, a new mathematical framework to the analysis of millimeter wave cellular networks is introduced. Its peculiarity lies in considering realistic path-loss and blockage models, which are derived from experimental data recently reported in the
Di Renzo, Marco
core +2 more sources
Millimeter and Radio Observations of z~6 Quasars [PDF]
, 2006 We present millimeter and radio observations of 13 SDSS quasars at reshifts z~6. We observed eleven of them with the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30m-telescope at 250 GHz and all of them with the Very Large Array (VLA) at 1.
Wang, Ran +10 more
core +4 more sources
Research of the active reflector antenna using laser angle metrology system
, 2012 Active reflector is one of the key technologies for constructing large telescopes, especially for the millimeter/sub-millimeter radio telescopes. This article introduces a new efficient laser angle metrology system for the active reflector antenna of the
Ai-Hua Li +14 more
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Modeling and Analyzing Millimeter Wave Cellular Systems [PDF]
IEEE Transactions on Communications, 2016 We provide a comprehensive overview of mathematical models and analytical techniques for millimeter wave (mmWave) cellular systems. The two fundamental physical differences from conventional sub-6-GHz cellular systems are: 1) vulnerability to blocking ...
J. Andrews +5 more
semanticscholar +1 more source