The design of a 4’th order Bandpass Butterworth filter with one operational amplifier.

Hans Gaunholt

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Abstract

A numerical design method is presented for the design of all pole band pass active-RC filters applying just one operational amplifier. The operational amplifier model used is the integrator model: ωt/s where ωt is the unity gain fre-quency. The design method is used for the design of a fourth order band pass filter with Butterworth poles applying just one operational amplifier coupled as a unity gain amplifier. The unity gain amplifiers have the advantage of providing low power consumption, yielding a large dynamic range, sometimes simplifying the amplifier design and being usable over a larger frequency range than conventional constant gain amplifiers. The Schoeffler sensitivity index is used as a basis for a practical realization of the circuit.
Original languageEnglish
Title of host publicationICSES'08 International Conference on Signals and Electronic Systems
Place of PublicationKrakow
PublisherIEEE
Publication date2008
Pages327 - 330
ISBN (Print)83-88-30947-1
DOIs
Publication statusPublished - 2008
EventICSES'08 International Conference og Signals and Electronic Systems - Krakov, Poland
Duration: 1 Jan 2008 → …

Conference

ConferenceICSES'08 International Conference og Signals and Electronic Systems
CityKrakov, Poland
Period01/01/2008 → …

Keywords

  • Operational Amplifier
  • Band-pass
  • Sensitivity
  • Active-RC
  • Unity Gain
  • Butterworth
  • Schoeffler Index
  • Integrator Model
  • Numerical Design
  • Stability

Cite this

Gaunholt, H. (2008). The design of a 4’th order Bandpass Butterworth filter with one operational amplifier. In ICSES'08 International Conference on Signals and Electronic Systems (pp. 327 - 330). IEEE. https://doi.org/10.1109/ICSES.2008.4673428