Results 51 to 60 of about 1,896,279 (338)
Design of controlled RF switch for beam steering antenna array [PDF]
, 2008 YesA printed dipole antenna integrated with a duplex RF switch used for mobile base station antenna beam steering is presented. A coplanar waveguide to coplanar strip transition was adopted to feed the printed dipole.
Abd-Alhameed, Raed A. +3 more
core +1 more source
InP-Based THz Beam Steering Leaky-Wave Antenna
IEEE Transactions on Terahertz Science and Technology, 2021 For mobile THz applications, integrated beam steering THz transmitters are essential. Beam steering approaches using leaky-wave antennas (LWAs) are attractive in that regard since they do not require complex feeding control circuits and beam steering is ...
P. Lu +10 more
semanticscholar +1 more source
Interplay between multiple scattering and optical nonlinearity in liquid crystals [PDF]
, 2018 We discuss the role played by time-dependent scattering on light propagation in liquid crystals. In the linear regime, the effects of the molecular disorder accumulate in propagation, yielding a monotonic decrease in the beam spatial coherence.
Alberucci, Alessandro +4 more
core +1 more source
IEEE Transactions on Antennas and PropagationThis communication presents a terahertz (THz) wideband transmitarray antenna with wide-angle beam steering for intersatellite communications. A new design method is developed for beam steering/multibeam transmitarrays based on feed displacement.
Li-zhao Song +4 more
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2021 A novel antenna beam-steering technology is proposed for emerging millimetre-wave (mm-wave), broadband mobile technologies such as 5G and beyond. A high gain (23 dBi) antenna with 30° beam steering is designed and tested at around the 38 GHz band.
M. Rabbani, J. Churm, A. Feresidis
semanticscholar +1 more source
Reflective liquid crystal hybrid beam-steerer [PDF]
, 2016 We report on efficient optical beam-steering using a hot-embossed reflective blazed grating in combination with liquid crystal. A numerical simulation of the electrical switching characteristics of the liquid crystal is performed and the results are used
Baghdasaryan, Tigran +8 more
core +2 more sources
Shaped Parallel-Plate Lens for Mechanical Wide-Angle Beam Steering
IEEE Transactions on Antennas and Propagation, 2021 This article presents a parallel-plate lens beamformer for continuous wide-angle scanning. The design is based on a compact dual-lens system with extended scanning range and is optimized using a previously developed geometrical optics technique.
Thomas Ströber +5 more
semanticscholar +1 more source
Blind zone-suppressed hybrid beam steering for solid-state Lidar [PDF]
, 2021 We demonstrate a blind zone-suppressed and flash-emitting solid-state Lidar based on lens-assisted beam-steering technology. As a proof-of-concept demonstration, with the design of a subwavelength-gap 1D long-emitter array and multiwavelength flash beam ...
Chao Li +7 more
semanticscholar +1 more source
Two-Dimensional Dynamic Beam Steering by Tamm Plasmon Polariton
Photonics, 2023 The dynamic steering of a beam reflected from a photonic structure supporting Tamm plasmon polariton is demonstrated. The phase and amplitude of the reflected wave are adjusted by modulating the refractive index of a transparent conductive oxide layer by
Rashid G. Bikbaev +2 more
doaj +1 more source
A Compact, Wide Field-of-View Gradient-index Lens Antenna for Millimeter-wave MIMO on Mobile Devices
, 2017 Lens-based beam-forming antennas offer a low-power, low-cost alternative to hybrid beamforming antenna arrays. They are ideally suited to millimeter-wave massive MIMO systems due to their native beam-space operation and angular selectivity and minimal ...
Bai, Wenlong, Chisum, Jonathan
core +1 more source