Results 21 to 30 of about 605,476 (307)

Research on Parameter Design and Control Method for Current Source Inverter–Fed IM Drive Systems

open access: yesMachines, 2022
In the current source inverter (CSI)-fed inductor motor (IM) drive system, DC-bus inductance and AC-filter capacitance have a direct impact on the dynamic response speed, power quality and power density.
Pengyun Song, Yanghui Liu, Chao Liu
doaj   +1 more source

A 5-MHz 11-bit delay-based self-oscillating ΣΔ modulator in 0.025 mm2 [PDF]

open access: yes, 2010
In this paper a self-oscillating Sigma Delta modulator is presented. By introducing this self-oscillation in the system, the loop filter operates at a speed significantly lower than dictated by the clock frequency.
De Vuyst, Bart, Rombouts, Pieter
core   +1 more source

Design of Compact Multiband Microstrip BPF Based on Fractal Open-Ring Configuration [PDF]

open access: yesEngineering and Technology Journal, 2018
Multiband bandpass filters (BPFs) are one of the core elements in the multi-services wireless communication systems. For this purpose, this paper presents a design of a compact multiband microstrip BPF design based on fractal open loop configuration. The
Hayder Ahmed   +2 more
doaj   +1 more source

Application and Optimization of Kalman Filter for Baseband Signal Processing of GPS Receivers

open access: yesMATEC Web of Conferences, 2016
High sensitivity tracking in GPS receiver is required in many weak signal circumstances. The key of improving sensitivity is the optimization of the loop filter in tracking.
He Yanpin, Li Weimin, Bi Bo
doaj   +1 more source

Multi loop snare technique for difficult inferior vena cava filter retrievals

open access: yesCVIR Endovascular, 2018
Introduction Use of optional vena cava filters has steadily increased. In the majority of cases removal is successful using standard techniques. In cases of tilting and migration of the filter however, more advanced techniques are necessary.
Arash Najafi   +3 more
doaj   +1 more source

Attention-Based Dual-Scale CNN In-Loop Filter for Versatile Video Coding

open access: yesIEEE Access, 2019
As the upcoming video coding standard, Versatile Video Coding (i.e., VVC) achieves up to 30% Bjøntegaard delta bit-rate (BD-rate) reduction compared with High Efficiency Video Coding (H.265/HEVC).
Ming-Ze Wang   +3 more
doaj   +1 more source

Closed Loop Subspace Identification [PDF]

open access: yesModeling, Identification and Control, 2005
A new three step closed loop subspace identifications algorithm based on an already existing algorithm and the Kalman filter properties is presented. The Kalman filter contains noise free states which implies that the states and innovation are uneorre ...
Geir W. Nilsen, David Di Ruscio
doaj   +1 more source

Discovery of spatial periodicities in a coronal loop using automated edge-tracking algorithms [PDF]

open access: yes, 2008
A new method for automated coronal loop tracking, in both spatial and temporal domains, is presented. Applying this technique to TRACE data, obtained using the 171 Å filter on 1998 July 14, we detect a coronal loop undergoing a 270 s kink-mode ...
D. B. Jess   +8 more
core   +2 more sources

Measurements On Passive Tunable Optical Filters For DWDM [PDF]

open access: yes, 2002
WFOPC 2002 IEEE/LEOS Workshop on Fibre and Optical Passive Components, University of Glasgow, Scotland, on 5th-6th June 2002.Measurements on a passive optical fibre tunable filter are presented.
Corredera, Pedro   +3 more
core   +2 more sources

On the Enhancement of Generalized Integrator-based Adaptive Filter Dynamic Tuning Range [PDF]

open access: yes, 2020
International audienceMany phase-locked loop (PLL) or frequency-locked loop (FLL) use quadrature signals (directly or indirectly) as the input variables.
Ahmed, Hafiz, Benbouzid, Mohamed
core   +1 more source

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