Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator
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Date
2011-04
ORCID
Advisor
Referee
Mark
Journal Title
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Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
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.
Description
Citation
Radioengineering. 2011, vol. 20, č. 1, s. 317-326. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2011/11_01_317_326.pdf
http://www.radioeng.cz/fulltexts/2011/11_01_317_326.pdf
Document type
Peer-reviewed
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Published version
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Language of document
en