Results 91 to 100 of about 4,744 (216)

Advanced Concepts in Josephson Junction Reflection Amplifiers

, 2014
Low-noise amplification atmicrowave frequencies has become increasingly important for the research related to superconducting qubits and nanoelectromechanical systems.
Hakonen, Pertti, Hassel, Juha, Lähteenmäki, Pasi, Paraoanu, G. S., Seppä, Heikki, Vesterinen, Visa   +5 more
core   +1 more source

Spatial mapping of dissolved methane using an in situ sensor in Puget Sound

Limnology and Oceanography: Methods, Volume 23, Issue 11, Page 804-814, November 2025.
Abstract Release of methane, as gas bubbles or in the dissolved phase, from the seafloor has been observed in coastal waters (< 200 m) and deep ocean basins (> 1000 m). Methane dissolution within the water column affects the geochemistry of the surrounding water, leading to localized oxygen loss and potential escape to the atmosphere, particularly from
Alexandra M. Padilla, William Pardis, Jason Kapit, Tor A. Bjorklund, Nicholas D. Ward, Daniel J. Fornari, Susan Hautala, William F. Waite, H. Paul Johnson, Anna P. M. Michel   +9 more
wiley   +1 more source

Reducing ECG Artifact From Left Ventricular Assist Device Electromagnetic Interference

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2020
Background Left ventricular assist devices (LVADs) generate electromagnetic interference that causes high‐frequency noise artifacts on 12‐lead ECGs. We describe the causes of this interference and potential solutions to aid ECG interpretation in patients
Zak Loring, Sounok Sen, Eric Black-Maier, Brett D. Atwater, Stuart D. Russell, Adam D. DeVore, Jonathan P. Piccini   +6 more
doaj   +1 more source

Computational modelling of the impact of anatomical changes on ECGs in left ventricular hypertrophy

The Journal of Physiology, Volume 603, Issue 19, Page 5387-5413, October 1, 2025.
Abstract figure legend Eccentric and concentric left ventricular hypertrophy distinctly alter 12‐lead ECG signals. Eccentric hypertrophy predominantly increases voltages in the precordial leads, whereas concentric hypertrophy affects voltages across all leads in a variable manner.
Mohammadreza Kariman, Karli Gillette, Matthias A. F. Gsell, Anton J. Prassl, Gernot Plank, Christoph M. Augustin   +5 more
wiley   +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

Toward photonic crystal based spatial filters with wide angle ranges of total transmission [PDF]

, 2009
Cataloged from PDF version of article.Spatial filters with steep switching between wide ranges of total transmission and total reflection can be obtained by using two-dimensional dielectric photonic crystals, which are a few wavelengths thick.
Ozbay, E., Petrov, A. Y., Serebryannikov, A. E.   +2 more
core   +1 more source

Design and Characterization of MSAP‐Fabricated Sub‐THz Frequency Selective Surface by Bench‐Top Optoelectronic Measurement System

Microwave and Optical Technology Letters, Volume 67, Issue 9, September 2025.
ABSTRACT A low‐cost and compact benchtop using the off‐the‐shelf optoelectronic (OE) measurement system is presented which is built to measure the performance of a 160 GHz frequency selective surface (FSS). The system uses an optical heterodyne source to excite wireless signals through the ‐D‐band (110–170 GHz), and transmission magnitude is measured ...
Keigan Macdonell, Takashi Tomura, Shulabh Gupta   +2 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 Microstrip Absorptive Bandstop Filter Utilizing Coupled-Line Architecture

IEEE Access
Reflectionless and high-attenuation characteristics are crucial for protecting sensitive front-end components, such as power amplifiers and mixers, in modern communication systems.
Chuan-Jing Jiang, Ching-Wen Tang
doaj   +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