Combination of HP and LP filters for narrow band antialiasing filter

Brtník, Bohumil

doi:10.2478/jee-2021-0040

Abstract

The discrete time signal processing requires an anti-aliasing filter at the input and a reconstruction filter at output. Some filters of biquads structure are characterized by a decreasing of the attenuation at high frequencies, caused by the final value of the output resistance of the operational amplifier. In this paper we discuss a design of combined BP filter without mentioned decrease. The proposed filter structure was verified by SPICE simulation.

References

[1] R. Mancini, Op Amps For Everyone Design Reference, Texas Instruments, 2002.
Search in Google Scholar Back to article
[2] J. Punčochář, “Low Pass Filters Sallen and Key With Real Operational Amplifiers”, Elektrorevue 10, 2005, pp. 1-13.
Search in Google Scholar Back to article
[3] J. Bičak, M. Leipert, and M. Vlček, A Linear Circuits and Systems, CTU publisher, Prague, 2007.
Search in Google Scholar Back to article
[4] T. Dostál and K. Vrba, The Electric Filters, PC-DIR, Brno, 1997.
Search in Google Scholar Back to article
[5] J. Dostál, Operational Amplifiers, BEN publisher, Prague, 2006.
Search in Google Scholar Back to article
[6] D. Biolek, Solving Electronic Circuits, BEN publisher, Prague, 2004.
Search in Google Scholar Back to article
[7] W. Jung, Op Amp Applications Handbook, Elsevier, Oxford, UK, 2005, pp. 307-419.10.1016/B978-075067844-5/50152-1
Search in Google Scholar Back to article
[8] J. Čajka, and B. Kvasil J. Theory of Circuits, Linear and Linearized Circuits Praha/Bratislava (CS): SNTL/ALFA, 1979.
Search in Google Scholar Back to article
[9] S. Winder, Analog and Digital Filter Design, 2 nd ed, Woburn, USA, 2002, pp125-241.10.1016/B978-075067547-5/50004-X
Search in Google Scholar Back to article

Combination of HP and LP filters for narrow band antialiasing filter

Abstract

Paradigm

My account