Results 1 to 10 of about 184,389 (296)

Multi-View 2D/3D Switchable Display with Cylindrical Liquid Crystal Lens Array

open access: yesCrystals, 2021
We propose a multi-view 2D/3D switchable display by using cylindrical liquid crystal (LC) lens array with a low operating voltage and fast response time. The cylindrical LC lens array is composed of three parts: the LC layer, a top-plane indium tin oxide
Fan Chu   +4 more
doaj   +3 more sources

Geometry-Dependent Photonic Nanojet Formation and Arrays Coupling [PDF]

open access: yesNanomaterials
This work systematically investigates photonic nanojet (PNJ) planar arrays formed by periodic arrangements of dielectric microstructures with four geometric configurations: cylinders, cones, truncated pyramids, and pyramids, focusing on the effects of ...
Zehua Sun   +7 more
doaj   +2 more sources

Passive sonar with cylindrical array

open access: yesArchives of Acoustics, 2014
The article presents a method of using active sonar with cylindrical array for passive monitoring of underwater sound sources. It is demonstrated that detecting a sound source and determining its bearings may be carried out with no changes in the ...
J. Marszal   +4 more
doaj   +1 more source

Metallic post-array loaded cylindrical dielectric resonator antenna

open access: yesThe Journal of Engineering, 2016
An investigation of a novel cylindrical dielectric resonator antenna (DRA) configuration has been carried out. It is shown that two resonances including the full- and half-cylindrical HE(11δ)-like modes can coexist simultaneously at different frequencies
Byeong-Yong Park   +2 more
doaj   +3 more sources

3D cone-beam breast ultrasonic tomography imaging for capacitive micromachined ultrasonic transducer cylindrical array [PDF]

open access: yesJASA Express Letters, 2021
In this paper, a 3D cone-beam ultrasonic transmission tomography method for capacitive micromachined ultrasonic transducer (CMUT) cylindrical phased array was proposed.
Yu Pei   +6 more
doaj   +1 more source

A Polarization MUSIC Algorithm Based on Cylindrical Conformal Arrays [PDF]

open access: yesHangkong bingqi, 2022
The directional-of-arrival (DOA) estimation method based on cylindrical conformal array is affected by the carrier curvature, and there is a problem of polarization receiving mismatch for signals with different polarization incidence.
Qu Zhiyu, Li Mingshi
doaj   +1 more source

Design of a Cylindrical Crossed Dipole Phased Array Antenna for Weather Surveillance Radars

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
We present a cylindrical dual-polarization phased array antenna for weather surveillance radars that features high isolation, matched copolar beams, low sidelobe levels, and adaptive null steering.
Mohammad-Hossein Golbon-Haghighi   +3 more
doaj   +1 more source

A Dual Slant-Polarized Cylindrical Array of Tightly Coupled Dipole Antennas

open access: yesIEEE Access, 2022
This study proposes a design of a low-profile ultra wide-band cylindrical antenna array with plus/minus 45-degree dual polarization. The proposed compact cylindrical antenna array produces an omnidirectional radiation pattern in the azimuth plane to ...
Xianyang Lv   +4 more
doaj   +1 more source

Ku-Band Dual Linear-Polarized 1-D Beam Steering Antenna Using Parabolic-Cylindrical Reflector Fed by a Phased Array Antenna

open access: yesIEEE 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

Design of Miniaturized Wideband Beam Deflection Conformal Array Antenna

open access: yesSensors, 2023
Antenna beam deflection, along with miniaturization and wideband of the antenna is in demand for practical applications. In this paper, a cylindrical conformal array antenna with a small-tilt forward beam was designed.
Junli Zhu   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy