Exponentially tunable voltage controlled quadrature oscillator

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dc.contributor.authorSotner, Roman
dc.contributor.authorJerabek, Jan
dc.contributor.authorPetrzela, Jiri
dc.contributor.authorDomansky, Ondrej
dc.contributor.authorJaikla, Winai
dc.contributor.authorDostal, Tomas
dc.date.accessioned2026-08-06T10:17:24Z
dc.date.available2026-08-06T10:17:24Z
dc.date.issued2017-10-19
dc.description.abstractThis 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.
dc.identifier.citation2017 40th International Conference on Telecommunications and Signal Processing Tsp 2017, 2017-January, 302-306, 2017
dc.identifier.doi10.1109/TSP.2017.8075992
dc.identifier.other2-s2.0-85042756993
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/7858
dc.source2017 40th International Conference on Telecommunications and Signal Processing Tsp 2017
dc.subjectCurrent conveyor
dc.subjectElectronic control
dc.subjectExponential control
dc.subjectLossless integrator
dc.subjectQuadrature oscillator
dc.subjectTunability extension
dc.subjectVariable gain amplifier
dc.titleExponentially tunable voltage controlled quadrature oscillator
dc.typeConference Paper

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