Results 21 to 30 of about 364,576 (288)

Phased Array of Phased Arrays (PAPA) Laser Systems Architecture [PDF]

open access: yesFiber and Integrated Optics, 2003
This paper introduces and analyzes revolutionary laser system architecture capable of dramatically reducing the complexity of laser systems while simultaneously increasing capability. The architecture includes three major subsystems. The first is a phased array of laser sources.
McManamon, Paul F., Thompson, William
openaire   +1 more source

Transmit beampattern design for airborne phased-MIMO radar

open access: yesThe Journal of Engineering, 2019
Airborne phased-MIMO radar based on sub-arrays is investigated that can combine the advantages of both MIMO radar and phased array radar. The transmit beampattern design method for airborne phased-MIMO radar is proposed that can control the transmit beam
Ye Dong, Fengfeng Cheng, Lanying Cao
doaj   +1 more source

Performance Enhancement of mm-Wave Phased Arrays for Mobile Terminals Through Grounded Coplanar Waveguide Feeding Networks With via Fences

open access: yesFrontiers in Communications and Networks, 2021
This paper presents a design methodology focused on feeding networks that can improve the insertion loss and coverage efficiencies of millimeter-wave (mm-Wave) phased arrays in mobile terminals.
Jae-Yeong Lee   +4 more
doaj   +1 more source

Generating amplitude acoustic patterns by mechanically shifting the emitters of an array [PDF]

open access: yesAIP Advances
Acoustic patterns are employed for particle patterning, targeted therapeutic ultrasound, or 3D printing. Patterns are generated using phased-arrays that electronically control each emitter or using passive structures that modulate the wave-field.
M. Aldea   +5 more
doaj   +1 more source

Sub‐array level structural compensation method for radiating and scattering performance of array antennas

open access: yesIET Microwaves, Antennas & Propagation, 2023
The detection and stealth abilities of array antennas depend mainly on the antennas' radiating and scattering performance, respectively. However, the operating environmental loads and assembly lead to serious structural errors, including deformation and ...
Yan Wang   +10 more
doaj   +1 more source

Millimeter-Wave Phased Arrays in Silicon [PDF]

open access: yes, 2007
Integration of mm-wave multiple-antenna systems on silicon-based processes enables complex, low-cost systems for high-frequency communication and sensing applications.
Natarajan, Arun Sridhar
core   +1 more source

Genome-wide nucleosome positioning is orchestrated by genomic regions associated with DNase I hypersensitivity in rice. [PDF]

open access: yesPLoS Genetics, 2014
Nucleosome positioning dictates the DNA accessibility for regulatory proteins, and thus is critical for gene expression and regulation. It has been well documented that only a subset of nucleosomes are reproducibly positioned in eukaryotic genomes.
Yufeng Wu, Wenli Zhang, Jiming Jiang
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

A Foldable Tightly Coupled Crossed Rings Antenna Array of Ultrawide Bandwidth and Dual Polarization

open access: yesIEEE Access, 2022
Low-profile foldable array antennas are becoming increasingly more important for a wide range of applications such as satellite communications and wearable electronic devices.
Yanwei Fu   +5 more
doaj   +1 more source

Improved performance of optical phased arrays assisted by transparent graphene nanoheaters and air trenches. [PDF]

open access: yesRSC Adv, 2018
Improved performances of optical phased arrays have been achieved assisted by graphene nanoheaters and air trenches.
Wang Y   +7 more
europepmc   +2 more sources

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