Transformation of Voltage Mode Filter Circuit Based on Op-Amp to Circuit Based on CCII

(整期优先)网络出版时间:2015-01-11
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Inthispaper,firstlywedemonstratetheuseofnodaladmittancematrixtoconvertalow-passband-passfilterbasedonoperationalamplifier(op-amp)toacircuitbasedonasecond-generationcurrentconveyor(CCII).Thistechniqueallowsustogeteightpresumptionsoffiltercircuits.Secondly,wepresentanovelarchitecturecircuitofCCII,whichcanoperateatlowsupplyvoltageof±0.75V.AllsimulationsareperformedbyTSPICEmodels.ThesimulationresultsshowthatthiscircuithasalowimpedanceatterminalX(RX=1.01Ω),averyhighinputimpedanceatterminalY,andwidebandwidthcurrentandvoltage.Thecenterfrequencyoftheproposedfilterisvariableontheinterval[157kHz,196MHz].