Results 31 to 40 of about 101,767 (351)
Two-Dimensional Beam Steering Based on Compact Programmable Coding Metasurface
Applied Sciences, 2022 A programmable coding metasurface provides unprecedented flexibility to manipulate electromagnetic waves dynamically. By controlling the peculiarity of subwavelength artificial atoms, devices with metasurfaces perform various functionalities.
Fei Yang +6 more
doaj +1 more source
Beam steering by χ^(2) trapping
Optics Letters, 1995 We show numerically the mutual dragging and locking together of intense fundamental and second-harmonic light beams propagating in second-order nonlinear media, and we discuss the potential applications of such effects for the steering of beams by spatial phase modulation of the input signals.
Torner Sabata, Lluís +3 more
openaire +4 more sources
A geophone subarray beam-steering process [PDF]
Exploration Geophysics, 1984 The outputs of geophone array elements are conventionally summed into a single output trace. This summation attenuates incoherent noise, horizontally propagating surface waves, and obliquely incident events. The geophone subarray beam‐steering process is a plane‐wave stacking technique which removes the differential moveout and improves the resolution
Dale E. Biswell +2 more
openaire +1 more source
Multi-Beam Steering for 6G Communications Based on Graphene Metasurfaces
Sensors, 2021 As communication technology is entering the 6G era, a great demand for high-performance devices operating in the terahertz (THz) band has emerged. As an important part of 6G technology, indoor communication requires multi-beam steering and tracking to ...
Huifang Ai +4 more
doaj +1 more source
Design Aspects of a Broadband Beam-Reconfigurable Leaky-Wave Antenna [PDF]
, 2016 Design aspects of a novel beam-reconfigurable pla-nar series-fed array are addressed to achieve beam steering with frequency tunability over a relatively broad bandwidth.
Abdo-Sánchez, Elena +5 more
core +1 more source
Demonstration of all-optical beam steering in modulated photonic lattices
, 2005 We demonstrate experimentally all-optical beam steering in modulated photonic lattices induced optically by three beam interference in a biased photorefractive crystal. We identify and characterize the key physical parameters governing the beam steering,
Andrey A. Sukhorukov +15 more
core +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
Laser and electron deflection from transverse asymmetries in laser-plasma accelerators. [PDF]
, 2019 We report on the deflection of laser pulses and accelerated electrons in a laser-plasma accelerator (LPA) by the effects of laser pulse front tilt and transverse density gradients.
Benedetti, Carlo +11 more
core +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