Results 41 to 50 of about 1,801,517 (307)
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
Optical phased array neural probes for beam-steering in brain tissue. [PDF]
Optics Letters, 2021 Implantable silicon neural probes with integrated nanophotonic waveguides can deliver patterned dynamic illumination into brain tissue at depth. Here, we introduce neural probes with integrated optical phased arrays and demonstrate optical beam steering ...
W. Sacher +15 more
semanticscholar +1 more source
Electronic Beam Steering Metamaterial Antenna with Dual-Tuned Mode of Liquid Crystal Material
Sensors, 2023 In this study, a dual-tuned mode of liquid crystal (LC) material was proposed and adopted on reconfigurable metamaterial antennas to expand the fixed-frequency beam-steering range.
Shuang Ma +3 more
doaj +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
Miniature planar telescopes for efficient, wide-angle, high-precision beam steering
Light: Science & Applications, 2021 Non-mechanical beam steerers with lightweight, compact, high-efficiency, high-precision, and/or large-angle are pivotal for light detection and ranging (LiDAR) of autonomous vehicles, eye-tracking for near-eye displays, microscopy, optical tweezers, and ...
Ziqian He, Kun Yin, Shin‐Tson Wu
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
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
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