Publication detail

Exponentially Tunable Voltage Controlled Quadrature Oscillator

ŠOTNER, R. JEŘÁBEK, J. PETRŽELA, J. DOMANSKÝ, O. JAIKLA, W. DOSTÁL, T.

Original Title

Exponentially Tunable Voltage Controlled Quadrature Oscillator

English Title

Exponentially Tunable Voltage Controlled Quadrature Oscillator

Type

conference paper

Language

en

Original Abstract

This paper deals with appropriate method of tunability extension in quadrature oscillators. Exponential dependence of frequency of oscillations on DC control voltage is created in lossless integrators by utilization of two exponentially controlled variable gain amplifiers and diamond transistors. Proposed solution maintains all beneficial features (especially independent levels of output waveforms on tuning process) of the oscillator concept employing two lossless integrators in the single loop and electronically controllable negative resistor serving for adjusting of condition of oscillations. PSpice verifications based on simulations of macromodels of used active devices confirmed doubled tunability range in comparison to standard linear control of frequency obtained for the same change of DC driving voltage.

English abstract

This paper deals with appropriate method of tunability extension in quadrature oscillators. Exponential dependence of frequency of oscillations on DC control voltage is created in lossless integrators by utilization of two exponentially controlled variable gain amplifiers and diamond transistors. Proposed solution maintains all beneficial features (especially independent levels of output waveforms on tuning process) of the oscillator concept employing two lossless integrators in the single loop and electronically controllable negative resistor serving for adjusting of condition of oscillations. PSpice verifications based on simulations of macromodels of used active devices confirmed doubled tunability range in comparison to standard linear control of frequency obtained for the same change of DC driving voltage.

Keywords

Current conveyor, electronic control, exponential control, lossless integrator, quadrature oscillator, tunability extension, variable gain amplifier

Released

05.07.2017

Location

Barcelona, Spain

ISBN

978-1-5090-3981-4

Book

Proceedings of the 40th International Conference on Telecommunications and Signal Processing (TSP 2017)

Pages from

302

Pages to

306

Pages count

5

URL

Documents

BibTex


@inproceedings{BUT137681,
  author="Roman {Šotner} and Jan {Jeřábek} and Jiří {Petržela} and Ondřej {Domanský} and Winai {Jaikla} and Tomáš {Dostál}",
  title="Exponentially Tunable Voltage Controlled Quadrature Oscillator",
  annote="This paper deals with appropriate method of tunability extension in quadrature oscillators. Exponential dependence of frequency of oscillations on DC control voltage is created in lossless integrators by utilization of two exponentially controlled variable gain amplifiers and diamond transistors. Proposed solution maintains all beneficial features (especially independent levels of output waveforms on tuning process) of the oscillator concept employing two lossless integrators in the single loop and electronically controllable negative resistor serving for adjusting of condition of oscillations. PSpice verifications based on simulations of macromodels of used active devices confirmed doubled tunability range in comparison to standard linear control of frequency obtained for the same change of DC driving voltage.",
  booktitle="Proceedings of the 40th International Conference on Telecommunications and Signal Processing (TSP 2017)",
  chapter="137681",
  doi="10.1109/TSP.2017.8075992",
  howpublished="online",
  year="2017",
  month="july",
  pages="302--306",
  type="conference paper"
}