Results 51 to 60 of about 1,801,517 (307)
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
Liquid Crystal Devices for Beam Steering Applications
Micromachines, 2021 Liquid crystals are valuable materials for applications in beam steering devices. In this paper, an overview of the use of liquid crystals in the field of adaptive optics specifically for beam steering and lensing devices is presented.
R. Morris, Cliff Jones, M. Nagaraj
semanticscholar +1 more source
Beam steering of a single nanoantenna
Optics Express, 2020 Nanoantennas play an important role as mediators to efficiently convert free-space light into localized optical energy and vice versa. However, effective control of the beam direction of a single nanoantenna remains a great challenge. In this paper, we propose an approach to steer the beam direction of a single nanoantenna by adjusting two antenna ...
Hwi-Min Kim, Myung-Ki Kim
openaire +2 more sources
Terahertz Dynamic Beam Steering Based on Graphene Coding Metasurfaces
IEEE Photonics Journal, 2021 Coding metasurfaces incorporated with reconfigurable elements can dynamically control electromagnetic waves to realize reconfigurable multiple functionalities.
Jiashuai Xu, Wenwen Liu, Zhengyong Song
semanticscholar +1 more source
Design of Compact Beam-Steering Antennas Using a Metasurface Formed by Uniform Square Rings
IEEE Access, 2018 In this paper, we propose two designs of slot-fed metasurface antenna for beam steering applications. Both designs have the same two-layer stacked configuration consisting of either a single-slot or a double-slot radiator and a metasurface superstrate ...
Tanan Hongnara +3 more
doaj +1 more source
A beam steering antenna based on Fresnel zone plate radome
Electronics Letters, 2021 In this study, a beam steering antenna was presented, comprising patch antenna and two layers of Fresnel zone plate (FZP). One of the FZP was a fixed structure, the other was a 1‐D collapsible radome with alternately deployed metal strips covering and ...
Yuting Wu +3 more
doaj +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
Multifunctional optofluidic lens with beam steering
Optics Express, 2020 In this paper, we demonstrate a multifunctional optofluidic (MO) lens with beam steering, which is actuated by electrowetting effect. A liquid lens chamber and a liquid prism chamber are stacked to form the MO lens. When the liquid lens chamber is actuated with voltage, the curvature of liquid-liquid interface changes accordingly and the focal length ...
Chao Liu +3 more
openaire +2 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Mobile THz communications using photonic assisted beam steering leaky-wave antennas.
Optics Express, 2021 THz communications is envisaged for wide bandwidth mobile communications eventually reaching data capacities exceeding 100 Gbit/s. The technology enabling compact chip-integrated transceivers with highly directive, steerable antennas is the key challenge
P. Lu +7 more
semanticscholar +1 more source