Tunable quadrature sinusoidal oscillator using single-ended OTAs

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dc.contributor.authorKumngern, Montree
dc.contributor.authorJunnapiya, Somyot
dc.date.accessioned2026-08-06T10:04:57Z
dc.date.available2026-08-06T10:04:57Z
dc.date.issued2012-10-17
dc.description.abstractThis paper presents a new electronically tunable voltage-mode quadrature sinusoidal oscillator employing four single-ended operational transconductance amplifiers (OTAs) and two grounded capacitors. In general, the single-ended OTA configuration is simpler than the multiple-output OTA counterpart and the requirement of grounded capacitors is preferable for an integrated circuit fabrication process. Therefore, the proposed circuit provides a simple circuitry by using only single-ended OTA and highly suitable for integrated circuit (IC) implementation by using grounded capacitors. The condition of oscillation and the frequency of oscillation of the circuit can be set orthogonally. The circuit also offers an electronic control of the frequency of oscillation through adjusting the bias currents of OTAs. The theoretical results are verified by PSPICE simulators. From simulation results, it can be expressed that the proposed circuit agrees well with theory. © 2012 IEEE.
dc.identifier.citationProceedings 2012 4th International Conference on Computational Intelligence Communication Systems and Networks Cicsyn 2012, 74-77, 2012
dc.identifier.doi10.1109/CICSyN.2012.24
dc.identifier.other2-s2.0-84867379008
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/4401
dc.sourceProceedings 2012 4th International Conference on Computational Intelligence Communication Systems and Networks Cicsyn 2012
dc.subjectCMOS
dc.subjectgrounded capacitor
dc.subjectquadrature sinusoidal oscillator (QSO)
dc.subjectvoltage-mode circuit
dc.titleTunable quadrature sinusoidal oscillator using single-ended OTAs
dc.typeConference Paper

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