Results 31 to 40 of about 213,927 (300)

Dual-Band Tunable Recursive Active Filter

open access: yes, 2011
This letter presents a novel recursive active filter topology that provides dual-band performance, with independent tuning capability in both bands. The dual-band operation is achieved by using two independent feedback lines.
Aznar Ballesta, Francisco   +3 more
core   +1 more source

Crumpled textile antennas [PDF]

open access: yes, 2009
The performance of a dual-band textile antenna under two-dimensional crumpling conditions is described. Both input impedance and radiation patterns are investigated based on numerical and experimental methods at 2.45 and 5.8 GHz.
Kellomaki   +6 more
core   +1 more source

Design of Dual-Band Two-Branch-Line Couplers with Arbitrary Coupling Coefficients in Bands [PDF]

open access: yes, 2014
A new approach to design dual-band two-branch couplers with arbitrary coupling coefficients at two operating frequency bands is proposed in this article. The method is based on the usage of equivalent subcircuits input reactances of the even-mode and odd-
Oborzhytskyy, V., Prudyus, I.
core   +4 more sources

Compact dual-band (2.4/5.2GHz) monopole antenna for WLAN applications [PDF]

open access: yes, 2010
Copyright ©2010 IEEE. Reprinted from Antenna Technology (iWAT), 2010 International Workshop. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Brunel University's ...
AbuTarboush, HF   +3 more
core   +1 more source

Therapeutic Apheresis for Intravenous Methylprednisolone‐Refractory Neuromyelitis Optica Spectrum Disorder: Clinical and Radiological Outcomes in a Single‐Center Case Series

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi   +5 more
wiley   +1 more source

Dual-Band Filter and Diplexer Design Using Extremely Miniaturized Substrate-Integrated Coaxial Cavity

open access: yesSensors
This paper presents the design of a dual-band filter and a diplexer using an extremely miniaturized substrate-integrated coaxial cavity (SICC) structure.
Chun-Ming Hung   +4 more
doaj   +1 more source

Dual-band ridged waveguide [PDF]

open access: yes, 1975
Waveguide-in-waveguide technique involves routing two waveguides through same passageway. Smaller waveguide can be soft or silver soldered inside X-band waveguide to form single ridge guide and to propagate frequencies at C ...
Franke, J. M.
core   +1 more source

Microstrip dual-band bandpass filter using U-shaped resonators [PDF]

open access: yes, 2016
Coupled resonators are widely used in the design of filters with dual-passband responses. In this paper, we present a dual-band bandpass filter using only couplings between adjacent resonators without cross-couplings.
Ogbodo, E., Wang, Yi, Yeo, Kenneth S. K.
core   +1 more source

A Dual-Band Approach for Backscattering Modulation

open access: yes2024 IEEE International Conference on RFID Technology and Applications (RFID-TA)
In typical passive UHF RFID systems, tags rely on backscattering, where they modulate a reflected signal by switching impedance states, powered solely by the reader's RF signal. In contrast, active RFID tags offer enhanced communication capabilities but require an internal power source.
Sennesael, Joryan   +3 more
openaire   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

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