Results 51 to 60 of about 21,674 (216)

A Monolayer Frequency-Selective Surface for Wideband Shielding Application with Adequate Out-of-Band Separation and Angular Stability

International Journal of Antennas and Propagation
In the proposed paper, a monolayer band-stop frequency-selective surface (FSS) is structured and analyzed for application in wideband shielding. The paper proposes an organized step-by-step method to design the frequency-selective surface (FSS) to ...
Ayan Chatterjee, Pratik Dey, Kousik Roy, Susanta Kumar Parui   +3 more
doaj   +1 more source

Filtering Horn Antenna Using Planar Quasi-Elliptical Frequency Selective Surface

IEEE Access
Fabrication and characterization of a planar frequency selective surface (FSS) integrated filtering horn antenna is presented in this paper. The proposed FSS with shorting-pins is systematically designed to achieve an elliptical transmission response ...
Chithra Margabandhu, D. Kannadassan
doaj   +1 more source

The benefit of neighborhood methods for the assimilation of cloud‐affected radiances evaluated in observing‐system simulation experiments

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Neighborhood methods are commonly used in verification to avoid the double‐penalty issue. This study evaluates such methods for the assimilation of infrared and visible satellite observations and extends them to multiscale assimilation. Moreover, a novel technique is tested aimed at mitigating complex biases and structural errors in real‐world model ...
Lukas Kugler, Stefano Serafin, Andrea Hochebner, Nicola Pierotti, Martin Weissmann   +4 more
wiley   +1 more source

Nowcasting convective cores using deep learning

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Key findings: •$$ \bullet $$ Network for Nowcasting Convective Cores (NetNCC) has considerable potential for convective storm nowcasting and the development of early warning systems for extreme rainfall. •$$ \bullet $$ Skilful nowcasts of convective cores are obtained at fine spatial resolutions (<30km$$ <30\kern0.15em \mathrm{km} $$) for up to 2 hr ...
Jawairia A. Ahmad, Cornelia Klein, Christopher Taylor, Seonaid R. Anderson, Steven C. Wells, David C. Hogg   +5 more
wiley   +1 more source

Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi, Thomas Gastaldo, Virginia Poli, Chiara Marsigli, Tijana Janjic, Alberto Carrassi   +5 more
wiley   +1 more source

Object‐based deep learning for probabilistic convective‐core nowcasting from satellite data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Convective cores detected from Meteosat infrared imagery are represented as compact physical objects to generate probabilistic nowcasts up to 6 h ahead. A spatio‐temporal transformer models interactions among evolving core populations and produces gridded probability forecasts across the western Sahel.
Mendrika Rakotomanga, Douglas J. Parker, Nadhir Ben Rached, Seonaid R. Anderson, Cornelia Klein, Steven C. Wells   +5 more
wiley   +1 more source

Wideband radar cross‐section reduction of patch array antenna with miniaturised hexagonal loop frequency selective surface

Electronics Letters, 2016
Wideband radar cross‐section (RCS) reduction of a microstrip patch array antenna is proposed and investigated. The design is based on replacing the solid metal ground of the antenna with a frequency selective surface (FSS) consisted of miniaturised ...
M. Zahir Joozdani, M. Khalaj Amirhosseini, A. Abdolali   +2 more
doaj   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram, Luca Feltrin, Mustafa Ozger, Cicek Cavdar   +3 more
wiley   +1 more source

Design and analysis of a complementary structure-based high selectivity tri-band frequency selective surface

Scientific Reports
This work presents a novel tri-band bandpass frequency selective surface (FSS) that achieves high-order filtering responses in different frequency bands by means of a complementary structure.
Zhi-Ming Li, Xiao-Long Weng, Xu Yi, Kai Li, Wei Duan, Mei Bi   +5 more
semanticscholar   +1 more source

Microfluidics Lab‐on‐a‐Chip Approaches to Decipher Atherosclerosis Pathogenesis

Small, EarlyView.
Figure created with BioRender.com. This review highlights how microfluidic lab‐on‐a‐chip models recreate key features of atherosclerosis in controlled, human‐relevant environments. It summarizes advances in modeling endothelial dysfunction, immune cell recruitment, foam cell formation, vascular remodeling, stenosis, and plaque rupture.
Fahima Akther, Hang Thu Ta
wiley   +1 more source