Voltage Differencing Transconductance Amplifier-Based Quadrature Oscillator and Biquadratic Filter Realization with All Grounded Passive Elements

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dc.contributor.authorTangsrirat, W.
dc.date.accessioned2026-08-06T10:22:20Z
dc.date.available2026-08-06T10:22:20Z
dc.date.issued2018-12-01
dc.description.abstractAbstract: The work realizes the sinusoidal quadrature oscillator and biquadratic filter with the same configuration using merely two voltage differencing transconductance amplifiers (VDTAs) as active devices and one grounded resistor and two grounded capacitor as passive elements. Performing the quadrature oscillator, the realized circuit is capable of producing two quadrature voltage outputs with almost equal amplitudes, and an independent electronic control of oscillation condition and oscillation frequency. Operating in voltage-mode biquadratic filter, the circuit can simultaneously generate the bandpass and lowpass filtering functions without any matching constraints. The natural angular frequency and the quality factor of the filter are independently and electronically adjustable. The effects of the VDTA non-idealities are also investigated in detail. Simulation results with TSMC 0.25 μm CMOS technology validate both working functions of the proposed circuit.
dc.identifier.citationJournal of Communications Technology and Electronics, 63(12), 1418-1423, 2018
dc.identifier.doi10.1134/S1064226918120239
dc.identifier.issn10642269
dc.identifier.other2-s2.0-85059962132
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/9252
dc.sourceJournal of Communications Technology and Electronics
dc.subjectactive filter
dc.subjectbiquadratic filter
dc.subjectquadrature oscillator (QO)
dc.subjectvoltage differencing transconductance amplifier (VDTA)
dc.subjectvoltage-mode circuits
dc.titleVoltage Differencing Transconductance Amplifier-Based Quadrature Oscillator and Biquadratic Filter Realization with All Grounded Passive Elements
dc.typeArticle

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