Results 51 to 60 of about 4,695 (219)
EPJ Web of Conferences, 2017 A dual-band bandstop microstrip filter is proposed and designed by using microstrip resonator with Defected Ground Structure (DGS). The DGS are placed in the ground plane to obtain high attenuation of the bandstop filter response.
Mahmud Farah Shazuani +4 more
doaj +1 more source
Optically Transparent Antennas and Filters [PDF]
, 2017 As society continues to increase its demand for wireless network access, more antennas, base stations, and network access points is a must. By integrating these antennas into existing infrastructure, such as buildings, cars, and street lights, network ...
Guzman, Michelle +3 more
core +1 more source
Cobalt Tungstate Characterization Using Matryoshka‐Structure Filter
Advanced Engineering Materials, Volume 27, Issue 23, December 2025.The green synthesis of cobalt tungstate (CoWO4) using natural polymerizing agents from agar–agar and commercial produces environmentally friendly materials with tunable structural and electromagnetic properties. X‐ray diffraction and Rietveld refinement correlate crystal structure with microwave transmission losses in Matryoshka‐type filters.
Amanda Gomes Barboza +6 more
wiley +1 more source
International Journal of Antennas and Propagation, 2022 Bandstop filters play an essential role in many radio frequency (RF) and microwave communication systems to block undesired signals or reject spurious harmonics. This paper presents the design and experiment of a compact quadband bandstop filter centered
Pierre Moukala Mpele
doaj +1 more source
Multiple frequency band and high isolation mobile device antennas using a capacitive slot [PDF]
, 2012 published_or_final_versio
Lam, EYM, ROWELL, CR
core +1 more source
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 +7 more
wiley +1 more source
Reconfigurable Filter for Bandpass-to-Absorptive Bandstop Responses
IEEE Access, 2020 A frequency tunable filter with a bandpass-to-absorptive bandstop reconfigurable characteristic is studied, designed and validated theoretically and experimentally.
Tae-Hak Lee, Jean-Jacques Laurin, Ke Wu
doaj +1 more source
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 +2 more
wiley +1 more source
, 2010 A design is proposed exploiting full wave numerical simulation of a dual resonant structure with an aim to sense small amounts of chemical and biochemical materials. The structure is energized with free space radiation in the terahertz regime.
Rotaru, Mihai, Sykulski, Jan
core +1 more source
Novel microstrip bandstop filter
Electronics Letters, 1977 A microstrip bandstop filter is described that overcomes the problems of radiation and surface-wave generation at high frequencies (40 GHz). An attenuation greater than 17 dB has been measured over at least a 10% bandwidth. The peak attenuation in the band can exceed 30 dB.
openaire +1 more source