Results 11 to 20 of about 7,981,538 (380)
Empirical Models of Shear-Wave Radiation Pattern Derived from Large Datasets of Ground-Shaking Observations. [PDF]
Sci Rep, 2019 Shear-waves are the most energetic body-waves radiated from an earthquake, and are responsible for the destruction of engineered structures. In both short-term emergency response and long-term risk forecasting of disaster-resilient built environment, it ...
Kotha SR, Cotton F, Bindi D.
europepmc +2 more sources
Optics Express, 2021 In future wireless communication networks at terahertz frequencies, the directivity and the beam profile of the emitters are highly relevant since no additional beam forming optics can be placed in free-space between the emitter and receiver.
S. Nellen +7 more
semanticscholar +1 more source
Triple-Radiation Pattern Monopulse Horn Feed With Compact Single-Layer Comparator Network
IEEE Transactions on Antennas and Propagation, 2021 A monopulse horn feed with a triple-radiation pattern (sum, elevation difference, and azimuthal difference) operating at 35 GHz is presented. The device consists of three main parts: a spline profiled horn, a mode converter that generates the modal field
Lucas Polo‐López +4 more
semanticscholar +1 more source
Impact of Vehicle Headlights Radiation Pattern on Dynamic Vehicular VLC Channel
Journal of Lightwave Technology, 2021 This article develops a statistical large-scale fading (path loss) model of a dynamic vehicular visible light communication (VVLC) system. The proposed model combines the impact of inter-vehicle spacing and the radiation intensity distribution as a ...
F. M. Alsalami +6 more
semanticscholar +1 more source
Efficient Planar Near-Field Measurements for Radiation Pattern Evaluation by a Warping Strategy
IEEE Access, 2021 The sampling of the near-field radiated by a planar source observed over a finite planar aperture is addressed. To this end, we employ the warping method that amounts to properly change the observation variables and finding the sampling points as those ...
M. A. Maisto +3 more
semanticscholar +1 more source
International Journal of Electronics and Communications System, 2022 This paper aims to describe the performance of the palm tree Coplanar Vivaldi Antenna Array (CVA) that was simulated from 0.25-6.25 GHz in terms of return loss and radiation pattern.
Nurhayati Nurhayati +3 more
doaj +1 more source
First-principles method for high-$Q$ photonic crystal cavity mode calculations [PDF]
, 2012 We present a first-principles method to compute radiation properties of ultra-high quality factor photonic crystal cavities. Our Frequency-domain Approach for Radiation (FAR) can compute the far-field radiation pattern and quality factor of cavity modes $
Akahane +29 more
core +1 more source
A Deep Learning-Based Approach for Radiation Pattern Synthesis of an Array Antenna
IEEE Access, 2020 In this paper, we propose a deep neural network (DNN)- for the radiation pattern synthesis of an antenna. The DNN utilizes the radiation patterns as inputs and the amplitude and phase of the antenna elements as outputs.
Jae Hee Kim, S. Choi
semanticscholar +1 more source
Enhancing and redirecting carbon nanotube photoluminescence by an optical antenna [PDF]
, 2010 We observe the angular radiation pattern of single carbon nanotubes' photoluminescence in the back focal plane of a microscope objective and show that the emitting nanotube can be described by a single in-plane point dipole.
Böhmler, Miriam +6 more
core +1 more source
Raman Radiation Patterns of Graphene [PDF]
ACS Nano, 2015 We report the angular distribution of the G and 2D Raman scattering from graphene on glass by detecting back focal plane patterns. The G Raman emission can be described by a superposition of two incoherent orthogonal point dipoles oriented in the graphene plane.
Harald Budde +7 more
openaire +2 more sources