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

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2008



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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
Publication date2008
Pages327 - 330
ISBN (print)83-88-30947-1
StatePublished - 2008
EventICSES'08 International Conference og Signals and Electronic Systems - Krakov, Poland


ConferenceICSES'08 International Conference og Signals and Electronic Systems
CityKrakov, Poland
Period01/01/2008 → …
CitationsWeb of Science® Times Cited: 0


  • Operational Amplifier, Band-pass, Sensitivity, Active-RC, Unity Gain, Butterworth, Schoeffler Index, Integrator Model, Numerical Design, Stability
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ID: 3813124