Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator

Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator

A modified conception of adjustable current conveyor transconductance amplifier (CCTA) and its interesting application in simple quadrature oscillator expandable for direct frequency modulation purposes, employing only four grounded passive elements is presented in this paper. It is quite simple sol...

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Bibliographic Details
Main Authors: R. Sotner, J. Jerabek, R. Prokop, K. Vrba
Format: Article
Language:English
Published: Spolecnost pro radioelektronicke inzenyrstvi 2011-04-01
Series:Radioengineering
Subjects:
Electronic adjusting
quadrature oscillator
controllable active element
CCTA
Online Access:http://www.radioeng.cz/fulltexts/2011/11_01_317_326.pdf
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spelling doaj-fd07b74e94cd4600bb4c5f0132173a2a2020-11-25T00:37:51ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122011-04-01201317326Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency ModulatorR. SotnerJ. JerabekR. ProkopK. VrbaA modified conception of adjustable current conveyor transconductance amplifier (CCTA) and its interesting application in simple quadrature oscillator expandable for direct frequency modulation purposes, employing only four grounded passive elements is presented in this paper. It is quite simple solution for modern communication subsystem components. An electronic adjusting of the oscillation frequency is easily possible and control of condition of the oscillation is realized via only one grounded resistor. The characteristic equation, condition of oscillation and major parasitic influences of real active part are discussed. The verification includes PSpice simulation and measurement with the CCTA block formed by commercially available active elements. www.radioeng.cz/fulltexts/2011/11_01_317_326.pdfElectronic adjustingquadrature oscillatorcontrollable active elementCCTA
collection DOAJ
language English
format Article
sources DOAJ
author R. Sotner
J. Jerabek
R. Prokop
K. Vrba
spellingShingle R. Sotner
J. Jerabek
R. Prokop
K. Vrba
Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator
Radioengineering
Electronic adjusting
quadrature oscillator
controllable active element
CCTA
author_facet R. Sotner
J. Jerabek
R. Prokop
K. Vrba
author_sort R. Sotner
title Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator
title_short Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator
title_full Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator
title_fullStr Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator
title_full_unstemmed Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator
title_sort current gain controlled ccta and its application in quadrature oscillator and direct frequency modulator
publisher Spolecnost pro radioelektronicke inzenyrstvi
series Radioengineering
issn 1210-2512
publishDate 2011-04-01
description A modified conception of adjustable current conveyor transconductance amplifier (CCTA) and its interesting application in simple quadrature oscillator expandable for direct frequency modulation purposes, employing only four grounded passive elements is presented in this paper. It is quite simple solution for modern communication subsystem components. An electronic adjusting of the oscillation frequency is easily possible and control of condition of the oscillation is realized via only one grounded resistor. The characteristic equation, condition of oscillation and major parasitic influences of real active part are discussed. The verification includes PSpice simulation and measurement with the CCTA block formed by commercially available active elements.
topic Electronic adjusting
quadrature oscillator
controllable active element
CCTA
url http://www.radioeng.cz/fulltexts/2011/11_01_317_326.pdf
work_keys_str_mv AT rsotner currentgaincontrolledcctaanditsapplicationinquadratureoscillatoranddirectfrequencymodulator
AT jjerabek currentgaincontrolledcctaanditsapplicationinquadratureoscillatoranddirectfrequencymodulator
AT rprokop currentgaincontrolledcctaanditsapplicationinquadratureoscillatoranddirectfrequencymodulator
AT kvrba currentgaincontrolledcctaanditsapplicationinquadratureoscillatoranddirectfrequencymodulator
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