Results 31 to 40 of about 2,488,982 (275)

Photonic wideband phased array: an optical time steered antenna based on a new true time delay unit [PDF]

open access: yes, 2006
L’attività di ricerca svolta durante il corso di dottorato e descritta dettagliatamente all’interno della tesi è stata diretta al progetto di una innovativa rete ottica di formazione del fascio per antenne a schiera a banda larga esenti dal fenomeno del ...
Curcio, Claudio
core   +1 more source

Phase Calibration of On-Chip Optical Phased Arrays via Interference Technique

open access: yesIEEE Photonics Journal, 2020
Optical phased arrays (OPAs) are promising in various applications owing to their excellent beam steering performance but suffer from the random initial phases ruining the beam patterns. In this work, an interference-based calibration method to align the
Haiyang Zhang   +3 more
doaj   +1 more source

Arrays of Sub-Terahertz Cryogenic Metamaterial

open access: yesApplied Sciences, 2021
Integrated quasi-optical cryogenic terahertz receivers contain arrays of detectors, quasi-optical filters, interferometers, and other metamaterials. Matrices of quasi-optical band-pass, low-pass, and high-pass filters, Fabry–Perot grid interferometers ...
Mikhail Tarasov   +4 more
doaj   +1 more source

PROSPECTS FOR THE DEVELOPMENT OF PHASED ANTENNA ARRAYS

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2016
This article describes the main achievements in the development of phased antenna arrays (par) in the past decade. Provides an overview of the most famous systems based on the PAR and PAR based on MMIC technology - PAR in radar stations, PAR to control ...
A. P. Dzuba
doaj   +1 more source

A novel deconvolution beamforming algorithm for virtual phased arrays [PDF]

open access: yes, 2013
Beamforming techniques using phased microphone arrays are one of the most common tools for localizing and quantifying noise sources. However, the use of such devices can result in a series of well-known disadvantages regarding, for instance, their very ...
Fernandez Comesana, Daniel   +3 more
core   +1 more source

Polarization Effect on the Performance of On-Chip Wireless Optical Point-to-Point Links

open access: yesApplied Sciences, 2023
Optical on-chip wireless interconnection is an emerging technology that aims to overcome the communication bottleneck in computing architectures and in which multiple processing units are exploited for data-intensive applications.
Giovanna Calò   +5 more
doaj   +1 more source

Phased arrays: A strategy to lower the energy threshold for neutrinos

open access: yesEPJ Web of Conferences, 2017
In-ice radio arrays are optimized for detecting the highest energy, cosmogenic neutrinos expected to be produced though cosmic ray interactions with background photons.
Wissel Stephanie   +16 more
doaj   +1 more source

Ultra-low cross polarization antenna architectures for multi-function planar phased arrays [PDF]

open access: yes, 2021
For over thirty years, single-beam mechanically steered radars have dominated the field of atmospheric observations, and since then, newer improved technologies have emerged that could provide a replacement for aging radars. Phased array radar technology
Diaz Diaz, Jose
core  

Novel Measures for Thermal Management of Silicon Photonic Optical Phased Arrays

open access: yesIEEE Photonics Journal, 2019
Silicon photonics has become a promising technology for fabrication of compact, highly integrated systems. When dealing with phase sensitive silicon photonic components, however, temperature control and in particular, reduction of temperature gradients ...
Pedro Andrei Krochin Yepez   +3 more
doaj   +1 more source

High-Speed Optical-Beam Scanning by an Optical Phased Array Using Electro-Optic Polymer Waveguides

open access: yesIEEE Photonics Journal, 2020
Optical phased arrays (OPAs), which manipulate an optical beam by controlling the phase of light, are optical devices characterized by high speed, small size, light weight, and high reliability that make various applications possible.
Yoshikuni Hirano   +7 more
doaj   +1 more source

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