Single VDGA-based dual-mode multifunction biquadratic filter and quadrature sinusoidal oscillator

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dc.contributor.authorTangsrirat, Worapong
dc.contributor.authorPukkalanun, Tattaya
dc.contributor.authorChannumsin, Orapin
dc.date.accessioned2026-08-06T10:26:52Z
dc.date.available2026-08-06T10:26:52Z
dc.date.issued2020-01-01
dc.description.abstractThis article relates to the realization of voltage-mode and/or current-mode multifunction biquadratic filter and quadrature oscillator circuits each using one voltage differencing gain amplifier (VDGA), two resistors and two grounded capacitors. The proposed dual-mode filter having one output and three inputs can provide the three standard biquadratic transfer functions with both voltage and current output filter responses simultaneously. It also has the independent tuning of the angular resonance frequency and the quality factor. With a slight modification of the proposed filter, a new dual-mode quadrature sinusoidal oscillator can be obtained. The proposed quadrature oscillator provides orthogonal resistive/electronic control of both oscillation condition and oscillation frequency. Non-ideal and parasitic conditions are also examined and their effects on the circuit performance are discussed. To confirm the theory, several computer simulation results with PSPICE program are given.
dc.identifier.citationInformacije MIDEM, 50(2), 125-136, 2020
dc.identifier.doi10.33180/InfMIDEM2020.205
dc.identifier.issn03529045
dc.identifier.other2-s2.0-85095748177
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/10497
dc.sourceInformacije MIDEM
dc.subjectBiquadratic filter
dc.subjectCurrent-mode circuit
dc.subjectDual-mode operation
dc.subjectQuadrature oscillator
dc.subjectVoltage Differencing Gain Amplifier (VDGA)
dc.subjectVoltage-mode circuit
dc.titleSingle VDGA-based dual-mode multifunction biquadratic filter and quadrature sinusoidal oscillator
dc.typeArticle

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