Results 91 to 100 of about 2,797,043 (365)

Dual-Frequency Linear-to-Circular Polarization Converter for Ka-Band Applications

Sensors, 2022
A dual-band linear-to-circular planar polarization converter based on a multilayer printed circuit board (PCB) is proposed and demonstrated. Each cell of the periodic surface is formed by six substrate layers separated by five foam spacers. The three top
Francesco Greco, Emilio Arnieri
doaj   +1 more source

Dual-Band Dual-Polarized Microstrip Antenna Array Using Double-Layer Gridded Patches for 5G Millimeter-Wave Applications

IEEE Transactions on Antennas and Propagation, 2021
This article presents a dual-band and dual-polarized microstrip antenna array with broadside beam scanning ability for millimeter-wave applications.
Wangyu Sun, Yue Li, Le Chang, Hao Li, Xu Qin, Hanyang Wang   +5 more
semanticscholar   +1 more source

Epilepsy‐Associated Variants of a Single SCN1A Codon Exhibit Divergent Functional Properties

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Pathogenic variants in SCN1A, which encodes the voltage‐gated sodium channel NaV1.1, are associated with multiple epilepsy syndromes exhibiting a range of clinical severity. SCN1A variants are reported in different syndromes, including Dravet syndrome, which is associated with loss‐of‐function, whereas neonatal/infantile‐onset ...
Lanie N. Liebovitz, Christopher H. Thompson, Linda C. Laux, Alfred L. George Jr.   +3 more
wiley   +1 more source

Continuously Tunable Millimeter Wave MEMS Phase Shifter [PDF]

, 2007
This paper presents the development of an analog distributed MEMS transmission line (DMTL) phase shifter for micro- and millimeter wave applications. Also, an improved design for a MEMS varactors is presented.
T. Vähä Heikk, P. Rantakari, Margesin, Benno, Giacomozzi, Flavio, P. Farinelli   +4 more
core   +2 more sources

Enabling High-Fidelity Ultra-Wideband Radio Channel Emulation: Band-Stitching and Digital Predistortion Concepts

IEEE Open Journal of Antennas and Propagation, 2022
Channel emulators are the key instrument in radio performance testing. The fidelity of the emulated channel with respect to the target channel models directly affects the credibility of the testing result.
Yilin Ji, Wei Fan
doaj   +1 more source

Toward Millimeter-Wave Joint Radar Communications: A signal processing perspective [PDF]

IEEE Signal Processing Magazine, 2019
Synergistic design of communications and radar systems with common spectral and hardware resources is heralding a new era of efficiently utilizing a limited radio-frequency (RF) spectrum.
K. Mishra, Bhavani Shankar, V. Koivunen, B. Ottersten, S. Vorobyov   +4 more
semanticscholar   +1 more source

Multidimensional Profiling of MRI‐Negative Temporal Lobe Epilepsy Uncovers Distinct Phenotypes

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Although hippocampal sclerosis (TLE‐HS) represents the most frequent cause of temporal lobe epilepsy (TLE), up to 30% of patients show no lesion on visual MRI inspection (TLE‐MRIneg). These cases pose diagnostic and therapeutic challenges and are underrepresented in surgical series.
Alice Ballerini, Alessia Casarini, Niccolò Biagioli, Laura Mirandola, Daniela Ballotta, Paul Summers, Simona Scolastico, Laura Madrassi, Maurilio Genovese, Marcella Malagoli, Gaetano Cantalupo, Giada Giovannini, Matteo Pugnaghi, Niccolò Orlandi, Laura Tassi, Valeria Cuccarini, Domenico Aquino, Elena Tartara, Fulvia Palesi, Giuseppe Didato, Paolo Vitali, the 3TLE Study Group, Roberta Di Giacomo, Fabio Doniselli, Federica Mazzi, Carlo Andrea Galimberti, Claudia A. M. Gandini Wheeler‐Kingshott, Stefano Meletti, Anna Elisabetta Vaudano   +28 more
wiley   +1 more source

Physics‐Informed Deep Learning Method for Real‐Time Multi‐Harmonic Beamforming Based on Space‐Time‐Coding Metasurface

Advanced Electronic Materials
Space‐time‐coding metasurfaces (STCMs) enable simultaneous controls of electromagnetic wave across multiple harmonics, but designing high‐performance coding sequences in real time remains challenging.
Jiang Han Bao, Che Liu, Yi Ning Zheng, Lei Zhang, Wen Ming Yu, Lianlin Li, Tie Jun Cui   +6 more
doaj   +1 more source

Dual-Band Shared-Aperture Base-Station Antenna Array With Dual Polarization Using Filtering Magnetoelectric Dipole Antenna

IEEE Open Journal of Antennas and Propagation
This paper presents a dual-band shared-aperture antenna array using a filtering magnetoelectric (ME) dipole antenna for the application of mobile-communication base station.
Zhi Jing Xiao, Yun Fei Cao, Jia Sheng Lin, Yu Lan, Quan Xue   +4 more
doaj   +1 more source

mm-Wave Waveguide Traveling-Wave Power Combiner Design Using an Equivalent Circuit Model

IEEE Access, 2019
The waveguide traveling-wave power combiner (WTWPC) falls into the category of asymmetrical non-isolated power combiners, and, therefore, the active load modulation occurring within the combiner was investigated.
Honglei Sun, Xiao-Wei Zhu, Ruijia Liu, Zhi Hao Jiang   +3 more
doaj   +1 more source