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ŠOTNER, R. HERENCSÁR, N. JEŘÁBEK, J. KOTON, J. DOSTÁL, T. VRBA, K.
Originální název
Electronically controlled oscillator with linear frequency adjusting for four-phase or differential quadrature output signal generation
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
This paper introduces novel four-phase oscillator employing two Dual-Output Controlled Gain Current Follower Buffered Amplifiers (DO-CG-CFBAs), single Current Amplifier, three resistors, and two grounded capacitors suitable for differential quadrature signal production (floating outputs). To control the frequency of oscillation (FO) and condition of oscillation (CO), only the current gain adjustment of active elements is used. The circuit was designed by well-known state variable approach. The oscillator employs three active elements for linear control of FO and to adjust CO and provides low-impedance voltage outputs. Furthermore, two straightforward ways of automatic amplitude gain control were used and compared. Active elements with very good performance are implemented to fulfill required features. Suitable CMOS implementation of introduced DO-CG-CFBA was shown. Important characteristics of the designed oscillator were verified experimentally and by PSpice simulations to confirm theoretical and expected presumptions.
Klíčová slova
electronic control, adjusting, Current Amplifier, Dual-Output Controlled Gain Current Follower Buffered Amplifier (DO-CG-CFBA), differential signals, quadrature oscillator
Autoři
ŠOTNER, R.; HERENCSÁR, N.; JEŘÁBEK, J.; KOTON, J.; DOSTÁL, T.; VRBA, K.
Rok RIV
2013
Vydáno
16. 12. 2014
Nakladatel
John Wiley and Sons
Místo
John Wiley & Sons, Ltd. The Atrium Southern Gate Chichester PO19 8QG, United Kingdom
ISSN
0098-9886
Periodikum
International Journal of Circuit Theory and Applications.
Ročník
42
Číslo
12
Stát
Spojené království Velké Británie a Severního Irska
Strany od
1264
Strany do
1289
Strany počet
26
URL
http://onlinelibrary.wiley.com/doi/10.1002/cta.1919/pdf
BibTex
@article{BUT99493, author="Roman {Šotner} and Norbert {Herencsár} and Jan {Jeřábek} and Jaroslav {Koton} and Tomáš {Dostál} and Kamil {Vrba}", title="Electronically controlled oscillator with linear frequency adjusting for four-phase or differential quadrature output signal generation", journal="International Journal of Circuit Theory and Applications.", year="2014", volume="42", number="12", pages="1264--1289", doi="10.1002/cta.1919", issn="0098-9886", url="http://onlinelibrary.wiley.com/doi/10.1002/cta.1919/pdf" }