Electronically Tunable Resistorless Mixed Mode Biquad Filters

This paper presents a new realization of elec¬tronically tunable mixed mode (including transadmittance- and voltage-modes) biquad filter with single input, three outputs or three inputs, single output using voltage differ-encing transconductance amplifier (VDTA), a recently introduced active element...

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Main Authors: A. Yesil, F. Kacar
Format: Article
Language:English
Published: Spolecnost pro radioelektronicke inzenyrstvi 2013-12-01
Series:Radioengineering
Subjects:
Online Access:http://www.radioeng.cz/fulltexts/2013/13_04_1016_1025.pdf
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author A. Yesil
F. Kacar
author_facet A. Yesil
F. Kacar
author_sort A. Yesil
collection DOAJ
description This paper presents a new realization of elec¬tronically tunable mixed mode (including transadmittance- and voltage-modes) biquad filter with single input, three outputs or three inputs, single output using voltage differ-encing transconductance amplifier (VDTA), a recently introduced active element. It can simultaneously realize standard filtering signals: low-pass, band-pass and high-pass or by selecting input terminals, it can realize all five different filtering signals: low-pass, band-pass, high-pass, band-stop and all-pass. The proposed filter circuit offers the following attractive feature: no requirement of invert-ing type input signal which is require no addition circuit, critical component matching conditions are not required in the design, the circuit parameters ω0 and Q can be set orthogonally or independently through adjusting the bias currents of the VDTAs, the proposed circuit employs two active and minimum numbers of passive components. Fur-thermore, this filter was investigated from the point of view of limited frequency range, stability conditions, effects of parasitic elements and effects of non-ideal and sensitivity. Thus, taking these effects and conditions into considera¬tion, working conditions and boundaries of this filter are determined. We also performed Monte Carlo, THD and noise analyses. Simulation results are given to confirm theoretical analyses.
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spelling doaj.art-9902749ea39c4076b5fb0ef04e083eaa2022-12-21T19:20:32ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122013-12-0122410161025Electronically Tunable Resistorless Mixed Mode Biquad FiltersA. YesilF. KacarThis paper presents a new realization of elec¬tronically tunable mixed mode (including transadmittance- and voltage-modes) biquad filter with single input, three outputs or three inputs, single output using voltage differ-encing transconductance amplifier (VDTA), a recently introduced active element. It can simultaneously realize standard filtering signals: low-pass, band-pass and high-pass or by selecting input terminals, it can realize all five different filtering signals: low-pass, band-pass, high-pass, band-stop and all-pass. The proposed filter circuit offers the following attractive feature: no requirement of invert-ing type input signal which is require no addition circuit, critical component matching conditions are not required in the design, the circuit parameters ω0 and Q can be set orthogonally or independently through adjusting the bias currents of the VDTAs, the proposed circuit employs two active and minimum numbers of passive components. Fur-thermore, this filter was investigated from the point of view of limited frequency range, stability conditions, effects of parasitic elements and effects of non-ideal and sensitivity. Thus, taking these effects and conditions into considera¬tion, working conditions and boundaries of this filter are determined. We also performed Monte Carlo, THD and noise analyses. Simulation results are given to confirm theoretical analyses.www.radioeng.cz/fulltexts/2013/13_04_1016_1025.pdfMixed mode filterelectronically tunable filterbiquad filter
spellingShingle A. Yesil
F. Kacar
Electronically Tunable Resistorless Mixed Mode Biquad Filters
Radioengineering
Mixed mode filter
electronically tunable filter
biquad filter
title Electronically Tunable Resistorless Mixed Mode Biquad Filters
title_full Electronically Tunable Resistorless Mixed Mode Biquad Filters
title_fullStr Electronically Tunable Resistorless Mixed Mode Biquad Filters
title_full_unstemmed Electronically Tunable Resistorless Mixed Mode Biquad Filters
title_short Electronically Tunable Resistorless Mixed Mode Biquad Filters
title_sort electronically tunable resistorless mixed mode biquad filters
topic Mixed mode filter
electronically tunable filter
biquad filter
url http://www.radioeng.cz/fulltexts/2013/13_04_1016_1025.pdf
work_keys_str_mv AT ayesil electronicallytunableresistorlessmixedmodebiquadfilters
AT fkacar electronicallytunableresistorlessmixedmodebiquadfilters