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Nth-order lowpass voltage transfer function synthesis using CCII+s: signal-flow graph approach

Nth-order lowpass voltage transfer function synthesis using CCII+s: signal-flow graph approach

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A general synthesis method is given for the realisation of an nth-order lowpass voltage transfer function, using the active RC circuit containing a minimum number of capacitors and n+1 current conveyors at most. All the current conveyors are of the noninverting type, and they act as voltage followers. This makes the proposed circuit simple and attractive.

Inspec keywords: current conveyors; network synthesis; active filters; RC circuits; transfer functions; signal flow graphs; low-pass filters

Other keywords: CCII+s; voltage followers; current conveyors; lowpass voltage transfer function synthesis; general synthesis method; active RC circuit; nth-order transfer function; signal-flow graph; noninverting type

Subjects: General circuit analysis and synthesis methods; Combinatorial mathematics; Active filters and other active networks

References

    1. 1)
      • E.O. Guneş , F. Anday . Realisation of nth-order voltage transfer function using CCII+. Electron. Lett. , 1022 - 1023
    2. 2)
      • J.A. Svoboda . Transfer function synthesis using current conveyors. Int. J. Electron. , 611 - 614
    3. 3)
      • Wilson, B.: `Current-mode amplifiers', Proc. ISCAS, 1989, p. 1576–1579.
    4. 4)
      • C. Acar . New transformations in signal-flow graphs. Electron. Lett. , 27 - 28
    5. 5)
      • F. Anday . Active realisation of nth order lowpass transfer functions. Proc. IEEE , 909 - 910
    6. 6)
      • E.O. Guneş , F. Anday . Realisation of nth-order transfer functions using current conveyors. Int. J. Circuit Theory and Appl. , 693 - 696
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