Results 11 to 20 of about 1,483,139 (351)

Analog Frequency Tracking Filter

open access: yesAdvances in Electrical and Computer Engineering, 2013
This paper propose a new type of analog adaptive filter derived as a generalization of the concept of matched filter. We conceive such a filter to track the instantaneous frequency of frequency modulated signals.
ISAR, A., ISAR, D.
doaj   +2 more sources

Reconnection–less Reconfigurable Fractional–Order Current–Mode Integrator Design With Simple Control

open access: yesIEEE Access, 2021
A design of a fractional-order (FO) integrator is introduced for the operation of the resulting solution in the current mode (CM). The solution of the integrator is based on the utilization of RC structures, but in comparison to other RC structure based ...
Lukas Langhammer   +4 more
doaj   +1 more source

Recovery of the response function of a flexible membrane to a volume oscillation using double digital fringe projection technique and frequency filtering

open access: yesNova Scientia, 2023
This study presents a method to recover the response function of a flexible latex membrane undergoing a dynamic event by volume oscillation using Double Digital Fringe Projection to measure the profile of the surface in a sequence of frames. By applying
Ubaldo Uribe López   +4 more
doaj   +1 more source

Reconnection-Less Reconfigurable Filter Based on Method of Unknown Nodal Voltages Using 4×4 Matrix

open access: yesIEEE Access, 2023
The paper introduces a novel design solution of a reconnection-less reconfigurable filter based on the method of unknown nodal voltages (MUNV). The filter offers all standard 2nd-order transfer functions and the electronic adjustment of the pole ...
Lukas Langhammer, Roman Sotner
doaj   +1 more source

Graph Embedding Using Frequency Filtering [PDF]

open access: yesIEEE Transactions on Pattern Analysis and Machine Intelligence, 2021
The target of graph embedding is to embed graphs in vector space such that the embedded feature vectors follow the differences and similarities of the source graphs. In this paper, a novel method named Frequency Filtering Embedding (FFE) is proposed which uses graph Fourier transform and Frequency filtering as a graph Fourier domain operator for graph ...
Hoda Bahonar   +3 more
openaire   +3 more sources

Terahertz frequency bandpass filters [PDF]

open access: yesJournal of Applied Physics, 2007
The design, measurement, and analysis of a range of artificial materials for use at terahertz frequencies are described. The chosen structures consist of arrays of cylindrical gold-plated pillars with period comparable to the wavelength of incident radiation.
Gallant, A. J.   +6 more
openaire   +3 more sources

Dual-Mode Multifunctional Reconnection-Less Reconfigurable Filter

open access: yesElektronika ir Elektrotechnika, 2020
A novel solution of a reconnection-less reconfigurable filter is being presented. The filter works in the current mode, voltage mode, and mixed mode (voltage tocurrent) offering sixteen transfer functions in total.
Lukas Langhammer   +3 more
doaj   +1 more source

Design and Implementation of Microwave Dual-Band Pass Interdigital Filter Using an Analytical Approach

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022
In this paper, benefiting from frequency transformation between the normalized frequency domain of low-pass prototype frequencies and the real frequency domain of the filter, a purely analytical procedure for dual-band filter design is used. The coupling
Moutaz Albik   +3 more
doaj   +1 more source

SIW/HMSIW Bandpass Filters for Ka Frequency Band Serving Wireless Applications [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2021
This paper describes a novel Substrate Integrated Waveguide (SIW) bandpass filter using Chebyshev approximation and Half Mode Substrate Integrated Waveguide (HMSIW) modeling technique.
Mehdi Damou   +5 more
doaj   +1 more source

A mine-used frequency converter filter device

open access: yesGong-kuang zidonghua, 2020
The mine-used frequency converter is connected with motor through a long cable, and there is phenomenon of voltage reflection in transmission process of pulse width modulation(PWM) pulse, which causes spike voltage at the motor end and seriously affects ...
RONG Xiang   +4 more
doaj   +1 more source

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