Results 21 to 30 of about 3,465,717 (304)

High-vacuum-compatible high-power Faraday isolators for gravitational-wave interferometers [PDF]

, 2012
Faraday isolators play a key role in the operation of large-scale gravitational-wave detectors. Second-generation gravitational-wave interferometers such as the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo will ...
Canuel, Benjamin, Dooley, Katherine L., Genin, Eric, Kamenetsky, Eugene E., Khazanov, Efim A., Lucianetti, Antonio, Marque, Julien, Martin, Rodica M., Mueller, Guido, Palashov, Oleg V., Quetschke, Volker, Reitze, David H., Tanner, David B., Voitovich, Alexander V., Williams, Luke, Zelenogorsky, Victor V., Zheleznov, Dmitry S.   +16 more
core   +2 more sources

A Super-Wideband and High Isolation MIMO Antenna System Using a Windmill-Shaped Decoupling Structure

IEEE Access, 2020
In this paper, a novel super-wideband multiple-input multiple-output (SWB-MIMO) antenna system with high isolation has been proposed, each antenna element consisting of a spade-shaped radiation patch, a defected ground structure (DGS) as well as a ...
Chenyin Yu, Shuhui Yang, Yinchao Chen, Wensong Wang, Li Zhang, Bin Li, Ling Wang   +6 more
doaj   +1 more source

Impact of Amplitude and Phase Imbalance on Dual Differential Fed Patch Antenna With High Isolation

IEEE Open Journal of Antennas and Propagation, 2022
In this paper, the impact of amplitude and phase imbalance on a proposed dual differential fed patch antenna is analyzed in the context of system effective reflection coefficient and axial ratio (AR).
Wenyu Zhou, Shakeeb Abdullah, Jorden Labossiere, Nima Javanbakht, Jafar Shaker, Gaozhi Xiao, Rony E. Amaya   +6 more
doaj   +1 more source

High efficiency single quantum well graded-index separate-confinement heterostructure lasers fabricated with MeV oxygen ion implantation [PDF]

, 1989
Single quantum well AlGaAs/GaAs graded-index separate-confinement heterostructure lasers have been fabricated using MeV oxygen ion implantation plus optimized subsequent thermal annealing.
Chen, H. Z., Chen, T. R., Morkoç, H., Tombrello, T. A., Wang, H., Xiong, Fulin, Yariv, A.   +6 more
core   +1 more source

DESIGN OF MIMO ANTENNA FOR WIRELESS COMMUNICATION APPLICATIONS

Journal of Engineering and Sustainable Development, 2022
The development of a new compact Ultra Wideband (UWB) antenna. The main advantages of the proposed array configuration are that it requires no isolation/decoupling circuit between the elements of the MIMO array.
Rasha Basil Nassir, Ali Khalid Jassim   +1 more
doaj  

Compact Wideband Dual-Polarized Antenna With High Isolation Using Modified Direct Feeding Structure For Indoor Beamforming Array Applications

IEEE Access, 2018
A modified direct feeding structure is proposed in this paper to realize a compact ( $45 \times 45$ mm2) wideband dual-polarized antenna with high isolation (33 dB) and low cross-polarization (30 dB).
Yaohui Zhang, Daotong Li, Yonghong Zhang, Yong Fan   +3 more
doaj   +1 more source

Design of Compact and High Isolation Dual-Polarized Antenna Array via Plasmonic Meta-Structure

IEEE Open Journal of Antennas and Propagation, 2023
We propose a compact and high isolation dual-polarized antenna array based on plasmonic meta-structure operating at 2.58 GHz. The compact principle of the dual-polarized antenna is mainly based on spoof surface plasmon polariton (SSPP) radiation patch to
Zhang Wen Cheng, Shimeng Wang, Yue Teng Chen, Ji Ran Chen, Jing Cheng Liang, Feng Gao, Shuai Luan, Xin Liu, Hui Feng Ma, Tie Jun Cui   +9 more
doaj   +1 more source

The VLT-FLAMES Tarantula Survey IV: Candidates for isolated high-mass star formation in 30 Doradus [PDF]

, 2012
Whether massive stars can occasionally form in relative isolation or if they require a large cluster of lower-mass stars around them is a key test in the differentiation of star formation theories as well as how the initial mass function of stars is ...
A. de Koter, Alves, André, Baade, Banerjee, Bastian, Bastian, Bastian, Bastian, Bergin, Bertin, Bestenlehner, Bonnell, Bonnell, Brandner, Bressert, Brott, C. J. Evans, Campbell, Chu, Cioni, Comeron, Danziger, de Koter, De Marchi, de Wit, de Wit, E. Bressert, Efremov, Elmegreen, Evans, G. Gräfener, Gieles, Girichidis, Gruendl, Gvaramadze, Gvaramadze, Gvaramadze, H. Sana, Huthoff, J. M. Bestenlehner, J. M. D. Kruijssen, J. Maíz Apellániz, J. S. Vink, King, Kissler-Patig, Kraus, Kroupa, Kruijssen, Kruijssen, Krumholz, Lamb, Lazendic, Lejeune, M. Cantiello, M. Gieles, Maeder, Martins, Maschberger, Maschberger, Massey, Massey, Maíz-Apellániz, McKee, Meixner, Meixner, Melnick, Meynet, Moffat, Molinari, N. Bastian, Oey, P. A. Crowther, Parker, Parker, Pasquini, Peimbert, Pellegrini, Popescu, Portegies Zwart, R. J. Parker, S. N. Longmore, S. P. Goodwin, Sana, Scheepmaker, Schild, Selier, Selman, Selman, Smith, Tenorio-Tagle, V. Hénault-Brunet, van Buren, W. D. Taylor, Wadadekar, Walborn, Walborn, Walborn, Walborn, Walborn, Walborn, Weidner, Weidner, Weidner, Werchan, Wheelwright, Yorke   +106 more
core   +3 more sources

Clinical profile and management of a Spanish single-center retrospective cohort of patients with post-chikungunya associated complications

Travel Medicine and Infectious Disease
Background: This study aims to describe post-chikungunya complications chronically developed cases in returning travelers from some epidemic/endemic regions, and the variables that are associated with the progression of acute or subacute cases to the ...
Fernando de la Calle-Prieto, Juan J. Barriga, Marta Arsuaga, Rosa de Miguel, Marta Díaz-Menéndez   +4 more
doaj   +1 more source

A Multi-Port Pattern Diversity Antenna With High Isolation

IEEE Open Journal of Antennas and Propagation, 2023
A pattern-diversity antenna with 7 ports is proposed for multiple-input multiple-output (MIMO) applications. Orthogonal modes are utilized to achieve high isolation among all 7 ports in a relatively compact shared volume.
Nghia Nguyen-Trong, Christophe Fumeaux
doaj   +1 more source