Results 51 to 60 of about 967,311 (300)

Beam-Steerable Fabry–Pérot Cavity Antenna with Reconfigurable Liquid-Based PRS

IEEE Access
The design of a beam steering antenna with a reconfigurable liquid-based metamaterial as a Partially Reflective Surface (PRS) in a Fabry–Pérot cavity (FPC) configuration is presented in this letter.
Syed Tamoor Shah, Muhammad Umar Khan, Rifaqat Hussain, James R. Kelly, Akram Alomainy, Khaled A. Aljaloud   +5 more
doaj   +1 more source

State-of-the-Art Passive Beam-Steering Antenna Technologies: Challenges and Capabilities

IEEE Access, 2023
This article reviews the latest developments of beam steering antennas that are entirely passive to realize interference-free, power-efficient, and highly secured end-to-end wireless communication.
Foez Ahmed, Khushboo Singh, Karu P. Esselle   +2 more
doaj   +1 more source

Fast millimeter wave assisted beam-steering for passive indoor optical wireless networks [PDF]

, 2017
In light of the extreme radio congestion, the time has come to consider the upper parts of the electromagnetic spectrum. Optical beam-steered wireless communications offer great potential for future indoor short-range connectivity, due to virtually ...
Liotta, Antonio, Maria Torres Vega, Torres Vega, Maria, Famaey, Jeroen, Koonen, A. M. J., Vega, Maria Torres, Antonio Liotta, Jeroen Famaey, Koonen, A.M.J., Koonen, A. M.J., A. M. J. Koonen   +10 more
core   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Sub‐THz Antenna With Graphene Enabled Beam Steering for THz Communication

Engineering Reports
This work presents a sub‐THz planar antenna designed for THz communication and sensing, featuring advanced beam steering capabilities. The antenna uses a silicon dioxide (SiO2) substrate with a copper radiating zone incorporating V‐shaped slots ...
Sher Nawaz, Waleed Tariq Sethi, Latif Jan, Mohammad Haseeb Zafar   +3 more
doaj   +1 more source

Light recycling beam steering on a DMD lidar

, 2018
Spatial light modulators (SLMs) that operate in a phase modulation mode enable beam steering with higher diffraction efficiency compared to amplitude modulation mode, thus potentially be used for an efficient beam steering with no moving part. Currently,
Rodriguez, Joshua M., Chen, Guanghao, Hellman, Brandon, Smith, Braden, Gin, Adley, Takashima, Yuzuru, Goodman, Hutchison, Hoffmann   +8 more
core   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

A beam steering technique using dielectric wedges. [PDF]

, 1995
The thesis describes a method of' beam steering aimed at producing a useful amount of deflection of an antenna beam from boresight, by a simple and Inexpensive method.
Khan, M.R.
core  

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

Advanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz, Jonas Fell, Hendrik Jost, Stefan Diebels, Hans‐Georg Herrmann   +4 more
wiley   +1 more source

Non-mechanical steering of the optical beam in spectral-domain optical coherence tomography

Scientific Reports
We demonstrate in a proof-of-concept experiment spectral-domain optical coherence tomography where steering of the optical beam that probes the sample in a transverse scan does not make use of any mechanical element.
Daniel F. Urrego, Gerard J. Machado, Juan P. Torres   +2 more
doaj   +1 more source