Results 71 to 80 of about 783 (172)

Climate Change Likely to Intensify Storm‐Driven Compound Flooding in an Exemplar UK Estuary

Earth's Future, Volume 13, Issue 12, December 2025.
Abstract Flood protection authorities are not prepared for compound flood risk in estuaries—now and in the face of climate change. Climate projections are rarely downscaled appropriately to assess future changes in storm surge and concurrent river discharge extremes, and their interactions to exacerbate flooding.
Charlotte Lyddon, Laura Devitt, Mirko Barada, Gemma Coxon, Jonathan Tinker, Thomas Coulthard, Andrew Barkwith, Peter Robins   +7 more
wiley   +1 more source

Band-Notched Dual-Polarized Antennas for 2G/3G/4G/5G Base Station Using the GCPW DGS-DMS Hybrid Filter

IEEE Access
Two broadband dual-polarized band-notched crossed dipole antennas based on the grounded coplanar waveguide (GCPW) filter for 2G/3G/4G/5G base station are proposed in this paper. Two antennas with two and three radiation nulls are displayed to demonstrate
Min Li, Daotong Li, Chongcai Xu, Haixia Li, Feng Xu   +4 more
doaj   +1 more source

Novel Wideband Absorptive Bandstop Filters With Good Selectivity

IEEE Access, 2017
This paper presents a new type of wideband absorptive bandstop filter (ABSF) design that is capable of absorbing the input power within the stopband at its Port 1.
Shih-Huan Chien, Yo-Shen Lin
doaj   +1 more source

Topological Data Analysis Based Characteristics of Electroencephalogram Signals in Children With Sleep Apnea

Journal of Sleep Research, Volume 34, Issue 6, December 2025.
ABSTRACT This study aims to identify differences in the functional neural connectivity of the brain of paediatric patients with obstructive sleep apnea. Using EEG signals from 3673 paediatric patients, we grouped subjects into OSA or control groups based on sleep oxygen desaturation levels and apnea‐hypopnea index (AHI), and applied topological data ...
Aarti Sathyanarayana, Shashank Manjunath, Jose A. Perea   +2 more
wiley   +1 more source

Tunable bound states in the continuum through hybridization of 1D and 2D metasurfaces

Nanophotonics, Volume 14, Issue 27, Page 4973-4981, December 2025.
Abstract This work presents a novel approach to create and dynamically control quasi‐bound states in the continuum (BIC) resonances through the hybridization of 1D and 2D metasurfaces using micro‐electromechanical systems (MEMS). The quasi‐BIC resonance’s central wavelength and quality factor are precisely tuned by introducing out‐of‐plane symmetry ...
Fedor Kovalev, Mariusz Martyniuk, Andrey Miroshnichenko, Ilya Shadrivov   +3 more
wiley   +1 more source

Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal

IEEE Access, 2019
This paper reports on a tunable bandstop filter (BSF) with both flexible center frequency and bandwidth. The tunable BSF is based on half-mode substrate integrated waveguide (HMSIW), of which the broadside is coupled with reconfigurable resonators. Using
Wentao Xu, Yiming Zhang, Yeshun Peng, Jianying Wang, Liwei Mu, Baoxian Yu, Han Zhang   +6 more
doaj   +1 more source

A compact dual-band bandstop filter having one spurline and two embedded open stubs

Journal of Electrical Systems and Information Technology, 2016
A compact dual-band microstrip bandstop filter (BSF) is presented. It combines a conventional open-stub BSF, a spurline, and two embedded open stubs. This BSF is simulated and fabricated.
Shujun Yang
doaj   +1 more source

Signal interference RF photonic bandstop filter

Optics Express, 2016
In the microwave domain, signal interference bandstop filters with high extinction and wide stopbands are achieved through destructive interference of two signals. Implementation of this filtering concept using RF photonics will lead to unique filters with high performance, enhanced tuning range and reconfigurability. Here we demonstrate an RF photonic
Iman, Aryanfar, Amol, Choudhary, Shayan, Shahnia, Mattia, Pagani, Yang, Liu, David, Marpaung, Benjamin J, Eggleton   +6 more
openaire   +2 more sources

Design and Fabrication of Tri-Stopband Bandstop Filters Using Cascaded and Multi-Armed Methods

Advanced Electromagnetics, 2017
In this paper, we proposed a compact C-open-loop ring resonator and its equivalent circuit. The second cascaded BSF are designed using this simple C-ring resonator.
A. Boutejdar, S. D. Bennani
doaj   +1 more source