Multifunctional Current-mode Filter with Three-inputs and Single-output Based on CCCII and OTA

A novel structure of biquadrates filter using Current Controlled Conveyor(CCCⅡ) and Operational Transconductance Amplifier(OTA) is presented.The circuit consists of one CCCⅡ,one OTA,one grounded resistance and two capacitors.At which various filtering functions such as low-pass,high-pass,band-pass,notch,all-pass filtering are obtained by selecting different inputs signal combinations.The proposed circuit is with simple structures,separately adjustable center frequency.All the capacitors being grounded,low passive sensitivities(equal 0.5).Theoretical analysis and SPICE simulation indicate that the proposed circuit is effective and feasible.