Results 91 to 100 of about 25,376 (311)
A Wideband, Four-Element, All-Digital Beamforming System for Dense Aperture Arrays in Radio Astronomy [PDF]
, 2010 Densely-packed, all-digital aperture arrays form a key area of technology development required for the Square Kilometre Array (SKA) radio telescope. The design of real-time signal processing systems for digital aperture arrays is currently a central ...
Adami, Kristian Zarb +2 more
core
Precoding in multigateway multibeam satellite systems [PDF]
, 2016 This paper considers a multigateway multibeam satellite system with multiple feeds per beam. In these systems, each gateway serves a set of beams (cluster) so that the overall data traffic is generated at different geographical areas.
Joroughi, Vahid +2 more
core +1 more source
IEEE Access, 2018 In this paper, an accurate filtenna synthesis approach is investigated and verified for achieving the expected filtering response. The load-resistance flattening technique is carried out by attaching the shunt inductive/capacitive elements to cancel the ...
Shih-Cheng Lin +3 more
doaj +1 more source
Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore
Advanced Functional Materials, EarlyView.To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul +8 more
wiley +1 more source
Ku-band high gain antenna [PDF]
An exposed four element array of 12.8 m diameter elements mounted on a common pedestal is the recommended ground antenna configuration in support of the 2 GHz bandwidth Ku-band downlink from tdr satellites.
Deerkoski, L. F.
core +1 more source
Variable-beamwidth antenna without moving parts [PDF]
, 1975 Basic configuration consists of large parabolic dish reflector, smaller hyperboloidal subreflector, and two sets of monopulse feeds located in conjugate focal region on boresight axis of ...
Deerkoski, L. F., Schmidt, R. F.
core +1 more source
Spillover and diffraction sidelobe contamination in a double-shielded experiment for mapping Galactic synchrotron emission [PDF]
, 2000 We have analyzed observations from a radioastronomical experiment to survey the sky at decimetric wavelengths along with feed pattern measurements in order to account for the level of ground contamination entering the sidelobes.
Bensadoun, M. +8 more
core +2 more sources
Advanced Functional Materials, EarlyView.This research presents a novel implantable bio‐battery, GF‐OsG, tailored for diabetic bone repair. GF‐OsG generates microcurrents in high‐glucose conditions to enhance vascularization, shift macrophages to the M2 phenotype, and regulate immune responses.
Nanning Lv +10 more
wiley +1 more source
Adaptive antenna arrays for satellite communications: Design and testing [PDF]
When two separate antennas are used with each feedback loop to decorrelate noise, the antennas should be located such that the phase of the interfering signal in the two antennas is the same while the noise in them is uncorrelated.
Gupta, I. J. +2 more
core +1 more source
Advanced Functional Materials, EarlyView.A unidirectional cerebral organoid–organoid neural circuit is established using a microfluidic platform, enabling controlled directional propagation of electrical signals, neuroinflammatory cues, and neurodegenerative disease–related proteins between spatially separated organoids.
Kyeong Seob Hwang +9 more
wiley +1 more source