Detail publikačního výsledku

Electronically controlled oscillator with linear frequency adjusting for four-phase or differential quadrature output signal generation

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

Anglický název

Electronically controlled oscillator with linear frequency adjusting for four-phase or differential quadrature output signal generation

Druh

Článek WoS

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.

Anglický 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

Klíčová slova v angličtině

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

2014

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

Svazek

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"
}