Results 11 to 20 of about 2,245,350 (289)
IEEE Open Journal of Antennas and Propagation, 2020 We propose a 1D beam steering high gain hybrid reflector-phased array antenna system for enhanced data rate wireless communication at Ku-band (12 - 14 GHz). The proposed hybrid antenna system consists of a D = 50 cm offset parabolic-cylindrical reflector
Ghanshyam Mishra +3 more
doaj +1 more source
Cylindrical conformal array antenna for near field focusing
International journal of RF and microwave computer-aided engineering, 2022 This paper proposes a cylindrical conformal antenna array for near‐field focusing. Two dimensional focusing scanning can be realized by using digital phase shifters.
Yingjun Li +4 more
semanticscholar +1 more source
SPARSE CYLINDRICAL AND CONICAL ANTENNA ARRAYS
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019 Cylindrical and conical antenna arrays numerical simulation results are presented. Radiation pattern and directivity coefficient dependence from array sparseness factor is observed.
O. A. Yurtsev, S. A. Zavadski
doaj +1 more source
Evaluating Spatial Resolution and Channel Capacity of Sparse Cylindrical Arrays for Massive MIMO
IEEE Access, 2017 How to design antenna arrays plays an important role in wireless communications, especially when there are hundreds of antennas. In massive multiple-input and multiple-output (MIMO), if the number of antennas and RF chains are increasing, the channel ...
Na Wu, Fangqi Zhu, Qilian Liang
doaj +1 more source
A hybrid antenna array design for 3-d direction of arrival estimation. [PDF]
PLoS ONE, 2015 A 3-D beam scanning antenna array design is proposed that gives a whole 3-D spherical coverage and also suitable for various radar and body-worn devices in the Body Area Networks applications.
Najam-Us Saqib, Imdad Khan
doaj +1 more source
Journal of Mechanical Engineering Science and Technology, 2023 This research aims to develop a mathematical method for expressing the Laplace operator in cylindrical coordinates and applying it to solve heat conduction equations in various scenarios.
Lulut Alfaris +3 more
doaj +1 more source
Interferometer-Type Structures for Guided Atoms [PDF]
, 2002 We experimentally demonstrate interferometer-type guiding structures for neutral atoms based on dipole potentials created by micro-fabricated optical systems.
A.I. Sidorov +9 more
core +3 more sources
Stress Wave Anisotropy in Centered Square Highly Nonlinear Granular Systems [PDF]
, 2012 Highly ordered, close packed granular systems present a nonlinear dynamic behavior stemming from the Hertzian contact interaction between particles. We investigated the propagation of elastic stress waves in an uncompressed, centered square array of ...
Daraio, C., Leonard, A.
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Adaptive lenticular lens array using a hybrid liquid crystal–carbon nanotube nanophotonic device [PDF]
, 2011 We present a switchable liquid crystal cylindrical lens array fabricated with a combination of a sparse electrode array of multiwall carbon nanotubes (MWCNTs) grown upon a silicon substrate, and a second glass substrate featuring an in-plane switching ...
Dai, Qing +4 more
core +1 more source
Dynamics of mesoscopic precipitate lattices in phase separating alloys under external load [PDF]
, 2000 We investigate, via three-dimensional atomistic computer simulations, phase separation in an alloy under external load. A regular two-dimensional array of cylindrical precipitates, forming a mesoscopic precipitate lattice, evolves in the case of applied ...
Binder K. +12 more
core +1 more source