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Current-mode ladder filters using multiple output current conveyors

Current-mode ladder filters using multiple output current conveyors

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  • Author(s): J. Wu 1  and  E. El-Masry 2
    • View affiliations
    • Affiliations: 1: Department of Electrical Engineering, Hunan University, Hunan, China
      2: Department of Electrical Engineering, The Technical University of Nova Scotia, Halifax, Canada
  • Source: Volume 143, Issue 4, August 1996, p. 218 – 222
    DOI:  10.1049/ip-cds:19960490 , Print ISSN 1350-2409, Online ISSN 1359-7000
© IEE
Published

A methodology to design continuous-time current-mode filters using current conveyors is presented. A multiple output current conveyor (MOCC), which contains both the positive and the negative outputs, is introduced. Based on the simulation of the passive RLC ladder prototypes, current-mode ladder filters using MOCCs are obtained. Designs show that the MOCC-based circuits can reduce the number of active components by 50%. A fifth-order all-pole lowpass ladder filter, with 1 MHz passband frequency, 0.5 dB ripple, and a third-order elliptic lowpass ladder filter, with 2.4 MHz passband frequency and 0.1773 dB ripple, are designed and simulated.

Inspec keywords: current conveyors; SPICE; network synthesis; ladder filters; low-pass filters; digital simulation; circuit CAD

Other keywords: 0.5 dB; active component; third-order elliptic filter; all-pole low-pass ladder filter; passive RLC ladder prototype; negative outputs; positive outputs; passband frequency; 1 MHz; multiple output current conveyors; simulation; 0.1773 dB; 2.4 MHz; current-mode ladder filters; continuous-time current-mode filters

Subjects: Electronic engineering computing; Computer-aided circuit analysis and design; Active filters and other active networks

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