Realization of current-mode KHN-equivalent biquad filter using ZC-CFTAs and grounded capacitors

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dc.contributor.authorSatansup, Jetsdaporn
dc.contributor.authorTangsrirat, Worapong
dc.date.accessioned2026-08-06T10:03:29Z
dc.date.available2026-08-06T10:03:29Z
dc.date.issued2011-12-01
dc.description.abstractIn this paper, a current-mode Kerwin-Huelsman-Newcomb (KHN) filter structure employing four z-copy current follower transconductance amplifiers (ZC-CFTAs) and two grounded capacitors is proposed. The circuit structure has one low-impedance current input and three high-impedance current outputs and enables realizing lowpass, bandpass and highpass current responses simultaneously. The bandstop and allpass responses can also be obtained by connecting appropriate output currents directly without additional devices. The proposed filter is capable of providing an independent current-control of the natural angular frequency (ω<inf>o</inf>) and quality factor (Q) through the transconductance of the ZC-CFTA. Moreover, high-Q value filter can be realized by simply tuning the ratio of ZC-CFTA's transconductance. To support the theoretical results, the properties of the presented filter using CMOS ZC-CFTA have been verified by simulation results.
dc.identifier.citationIndian Journal of Pure and Applied Physics, 49(12), 841-846, 2011
dc.identifier.issn00195596
dc.identifier.other2-s2.0-82955249837
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/3978
dc.sourceIndian Journal of Pure and Applied Physics
dc.subjectBiquad filter
dc.subjectCurrent-mode circuit
dc.subjectKerwin-Huelsman-Newcomb
dc.subjectZ-copy current follower transconductance amplifier
dc.titleRealization of current-mode KHN-equivalent biquad filter using ZC-CFTAs and grounded capacitors
dc.typeArticle

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