Results 21 to 30 of about 184,389 (296)
High Accuracy 2D-DOA Estimation for Conformal Array Using PARAFAC
International Journal of Antennas and Propagation, 2014 Due to the polarization diversity (PD) of element patterns caused by the varying curvature of the conformal carrier, the conventional direction-of-arrival (DOA) estimation algorithms could not be applied to the conformal array.
Liangtian Wan +4 more
doaj +1 more source
Terahertz surface plasmon polariton propagation and focusing on periodically corrugated metal wires [PDF]
, 2006 In this letter we show how the dispersion relation of surface plasmon polaritons (SPPs) propagating along a perfectly conducting wire can be tailored by corrugating its surface with a periodic array of radial grooves.
Andrews, Steve R. +3 more
core +2 more sources
Conformal Antenna Array for Millimeter-Wave Communications: Performance Evaluation
, 2015 In this paper, we study the influence of the radius of a cylindrical supporting structure on radiation properties of a conformal millimeter-wave antenna array.
Bisognin, A. +7 more
core +3 more sources
A wideband cylindrical conformal microstrip mimo antenna array
Electronics Letters, 2023 In this paper, a wideband cylindrical conformal microstrip antenna array employing a proximity‐coupled feeding mechanism with a cavity‐backed configuration is designed and fabricated.
Song‐Song Qian +5 more
doaj +1 more source
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
Limitations of Surface Current Model of Magnetic Field and a Remedy
IEEE Access, 2022 It is well known that any realistic static magnetic field in a source-free volume can be generated by electric currents on a surface enclosing the volume.
Youngseob Seo, Zhiyue J. Wang
doaj +1 more source
Synthesis of Phased Cylindrical Arc Antenna Arrays [PDF]
International Journal of Antennas and Propagation, 2009 This paper describes a new approach to synthesize cylindrical antenna arrays controlled by the phase excitation, to synthesize directive lobe and multilobe patterns with steered zero. The proposed method is based on iterative minimization of a function that incorporates constraints imposed in each direction.
Rammal, Hussein +4 more
openaire +4 more sources
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
Near-Field Millimeter-Wave Imaging via Multi-Plane MIMO Arrays
IEEE Access, 2023 Multiple-input multiple-output (MIMO) array-based millimeter-wave (MMW) imaging has broad application prospects in concealed weapons detection due to its capability of high resolution at a reasonable cost.
Guangnan Xing +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi +3 more
wiley +1 more source