Dual-Mode Single-Input Three-Output Multifunction Filter and Quadrature Oscillator Consisting of Two Voltage Differencing Transconductance Amplifiers and Two Grounded Capacitors

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dc.contributor.authorTangsrirat, W.
dc.contributor.authorChannumsin, O.
dc.contributor.authorUnhavanich, S.
dc.contributor.authorPukkalanun, T.
dc.date.accessioned2026-08-06T10:41:15Z
dc.date.available2026-08-06T10:41:15Z
dc.date.issued2023-04-01
dc.description.abstractAbstract: In this paper, we present the circuit configuration that can perform as a dual-mode (i.e., both voltage-mode and current-mode) multifunction filter as well as a dual-mode quadrature oscillator by slightly modifying the design. The presented configuration includes only two voltage differencing transconductance amplifiers and two grounded capacitors, resulting in a resistor-less construction. The dual-mode multifunction filter with one input and three outputs provides three standard biquadratic filter functions: highpass, bandpass, and lowpass, as well as independent electronic adjustment of its quality factor. The circuit can also be used to implement a dual-mode quadrature oscillator with orthogonal electronic control of the oscillation condition and the oscillation frequency. Simulation results based on 0.25-μm level-7 TSMC CMOS technology parameters are used to evaluate the behavior of the proposed dual-mode multifunction biquad and quadrature oscillator circuit.
dc.identifier.citationJournal of Communications Technology and Electronics, 68(4), 460-473, 2023
dc.identifier.doi10.1134/S1064226923040149
dc.identifier.issn10642269
dc.identifier.other2-s2.0-85162856490
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/14360
dc.sourceJournal of Communications Technology and Electronics
dc.subjectdual-mode
dc.subjectmultifunction filter
dc.subjectquadrature oscillator
dc.subjectresistor-less circuit
dc.subjectVoltage Differencing Transconductance Amplifier (VDTA)
dc.titleDual-Mode Single-Input Three-Output Multifunction Filter and Quadrature Oscillator Consisting of Two Voltage Differencing Transconductance Amplifiers and Two Grounded Capacitors
dc.typeArticle

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