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Design of Filters Using CFOAs

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Part of the Analog Circuits and Signal Processing book series (ACSP)

Abstract

This chapter deals with the application of CFOAs in filter design. We first present a number of multifunction voltage-mode and current-mode biquad filter topologies employing two to five CFOAs choosing from a large number of existing configurations. In the category of voltage-mode filters, both single input multiple output (SIMO) type as well as multiple input single output (MISO) type configurations have been included and their significant features have been highlighted. However, in the category of current-mode filters, only MISO-type universal biquad filters have been included since no SIMO-type CFOA-based biquads are known to exist till now. Subsequently, a number of universal, mixed-mode biquads capable of realizing all the five standard filter functions in all the four possible modes, namely, VM, CM, trans-impedance and trans-admittance have been highlighted. This is followed by active-R multi-function biquads, inverse active filters, MOSFETs-C filters and the design of higher order filter employing CFOAs in which case doubly-terminated wave active filters based upon LC ladder proto-types and higher order modular filter structures are described in detail. Finally, a number of ideas for further research have also been indicated.

Keywords

Current Mode Band Pass Voltage Mode Equivalent Resistance Spice Simulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Division of Electronics and Communication EngineeringNetaji Subhas Institute of TechnologyNew DelhiIndia
  2. 2.Jamia Millia Islamia, Electronics and Communication Engineering, F/O Engineering and TechnologyNew DelhiIndia
  3. 3.Electronics and Communication EngineeringHRCT Group of Institutions, F/O Engineering and TechnologyMota, GhaziabadIndia
  4. 4.Department of Electronics EngineeringInstitute of Engineering and TechnologyLucknowIndia

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