Second-generation voltage conveyor-based first-order all-pass filters and application to quadrature sinusoidal oscillator

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dc.contributor.authorJaikla, Winai
dc.contributor.authorTheppota, Burin
dc.contributor.authorSaksiri, Wiset
dc.contributor.authorKhateb, Fabian
dc.contributor.authorSiripruchyanun, Montree
dc.date.accessioned2026-08-06T10:50:27Z
dc.date.available2026-08-06T10:50:27Z
dc.date.issued2025-02-01
dc.description.abstractThis article describes 2 first-order voltage-mode all-pass filters (APFs) covering leading and lagging phases based on single capacitor and second-generation voltage conveyors (VCIIs). The proposed APFs comprise 2 VCIIs cooperating with 3 resistors and 1 capacitor. The phase angle of the output relative to input signals can be tuned by the single external resistor. Different from previously related works, they use only VCII+ which can be easily realized and less complicated for both integrated circuit architecture and off-the-shelf design. In addition, a 450 mV 1.98 µW VCII based on bulk-driven quasi-floating-gate MOS transistor was developed to be used in this work to achieve ultra low-voltage and low-power consumption. The proposed APFs offer a phase shifting function over a wide range of operating frequency. Its output also provides an accurate sinusoidal signal. The testing results obtained from Cadence Virtuoso System Design Platform simulation are disclosed to investigate different behaviors of the proposed APFs. In addition, the experimental setup using commercially available integrated circuits is shown. From the both results, it is found that they are agreed well with the mentioned anticipations. An application of the proposed APFs in quadrature sinusoidal oscillator is also depicted, it enjoys independent controllability of oscillation condition and oscillation frequency for a wide range of operating frequency with a precise quadrature output signal.
dc.identifier.citationAEU International Journal of Electronics and Communications, 190, 2025
dc.identifier.doi10.1016/j.aeue.2024.155619
dc.identifier.issn14348411
dc.identifier.other2-s2.0-85211219646
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16795
dc.sourceAEU International Journal of Electronics and Communications
dc.subjectAll-pass filter
dc.subjectBulk-driven quasi-floating gate MOS
dc.subjectPhase shifter
dc.subjectQuadrature sinusoidal oscillator
dc.subjectVCII
dc.titleSecond-generation voltage conveyor-based first-order all-pass filters and application to quadrature sinusoidal oscillator
dc.typeArticle

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