Resistorless realization of current-mode first-order allpass filter using current differencing transconductance amplifiers

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dc.contributor.authorTangsrirat, Worapong
dc.contributor.authorPukkalanun, Tattaya
dc.contributor.authorSurakampontorn, Wanlop
dc.date.accessioned2026-08-06T09:59:52Z
dc.date.available2026-08-06T09:59:52Z
dc.date.issued2010-02-01
dc.description.abstractThis paper presents a realization of a current-mode first-order allpass filter using two current differencing transconductance amplifiers (CDTAs) as the active components and one virtually grounded capacitor as the only passive component. The proposed filer requires no external resistor and is electronically adjustable by varying the external bias current of the CDTA. No component-matching constraints are required. The circuit realizes both inverting and non-inverting types of allpass filters, and also exhibits high-output impedances, which are easy cascading in the current-mode operation. As an application of the proposed CDTA-based allpass section, a current-mode quadrature oscillator is realized. PSPICE simulation results are given to confirm the theoretical analysis. © 2010 Elsevier Ltd. All rights reserved.
dc.identifier.citationMicroelectronics Journal, 41(2-3), 178-183, 2010
dc.identifier.doi10.1016/j.mejo.2010.02.001
dc.identifier.issn00262692
dc.identifier.other2-s2.0-77649337955
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/2947
dc.sourceMicroelectronics Journal
dc.subjectAllpass filter
dc.subjectCurrent differencing transconductance amplifier (CDTA)
dc.subjectCurrent-mode circuits
dc.titleResistorless realization of current-mode first-order allpass filter using current differencing transconductance amplifiers
dc.typeArticle

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