Results 81 to 90 of about 3,408 (306)
Advanced Optical Materials, EarlyView.A reconfigurable intelligent surface is proposed that can simultaneously anomalously reflect the light and sense the angle of arrival. An in situ optimization of either the currents flowing on array elements or the far field in the receiver direction realizes anomalous reflection and suppresses parasitic scattering.
Mostafa Movahediqomi +4 more
wiley +1 more source
Energies, 2016 A method is proposed for reducing speed ripple of permanent magnet synchronous motors (PMSMs) controlled by space vector pulse width modulation (SVPWM).
Xing Liu, Jinhua Du, Deliang Liang
doaj +1 more source
Dilation properties of measurable Schur multipliers and Fourier multipliers
Positivity, 2022 In the article, we find new dilatation results on non-commutative $L_p$ spaces. We prove that any selfadjoint, unital, positive measurable Schur multiplier on some $B(L^2(Σ))$ admits, for all $1\leq p<\infty$, an invertible isometric dilation on some non-commutative $L^p$-space. We obtain a similar result for selfadjoint, unital, completely positive
openaire +2 more sources
Unidirectional Focusing of Light Using Structured Diffractive Surfaces
Advanced Optical Materials, EarlyView.This study presents a reciprocal diffractive unidirectional focusing design based on linear and isotropic layers. A set of cascaded diffractive layers is designed using deep learning to achieve efficient forward light focusing while suppressing backward propagation across various illumination angles.
Yuhang Li +4 more
wiley +1 more source
Weighted inequalities for Hilbert transforms and multiplicators of Fourier transforms
Journal of Inequalities and Applications, 1997 As is well known, invariant operators with a shift can be bounded from Lp into Lq only if ...
A. Meskhi, V. Kokilashvili
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Computationally Minimized X-Part for FX Correlator in Big-Data Interferometers
IEEE Access, 2017 Big-data is a challenging domain for high-throughput digital signal processing (DSP), especially in global-projects like the square kilometer array.
Vignesh Raja Balu, S. M. Rezaul Hasan
doaj +1 more source
Radial Fourier multipliers in high dimensions
Acta Mathematica, 2011 Some changes in the last ...
Fedor Nazarov +3 more
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Selective Directional Enhancement in Gold/Perovskite Quantum Dot Metasurfaces
Advanced Optical Materials, EarlyView.A thin gold layer can selectively enhance the directional radiation of a perovskite quantum dot (QD)1D metasurface by incorporating hybrid plasmonic excitation and redistributing diffraction orders from substrate to cover. The use of template‐assisted self‐assembly techniques enables breakthrough tunability in radiative properties over large areas ...
Mohammad Adnan +6 more
wiley +1 more source
Advanced Optical Materials, EarlyView.Picosecond spin current pulses generated by ferrimagnetic GdCo are studied via THz emission spectroscopy. Due to the GdCo micromagnetic structure, the spin current vanishes at compensation when a magnetic field is applied but persists for zero field. At room temperature, the THz spin current is dominated by Co. At low temperatures, Gd can significantly
Guillermo Nava Antonio +10 more
wiley +1 more source
Fourier multipliers of classical modulation spaces
Applied and Computational Harmonic Analysis, 2006 AbstractBased on the observation that translation invariant operators on modulation spaces are convolution operators we use techniques concerning pointwise multipliers for generalized Wiener amalgam spaces in order to give a complete characterization of the Fourier multipliers of modulation spaces.
Hans G. Feichtinger, Ghassem Narimani
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