Some New Configurations for Active Filters
- 1 January 1972
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuit Theory
- Vol. 19 (1) , 25-33
- https://doi.org/10.1109/tct.1972.1083380
Abstract
Some new active-filter configurations based on the pole-zero cancellation technique are introduced. First, for the rangeQ \leq 50a singleamplifier circuit is suggested. For higher selectivity(50 < Q \leq 500)a twoamplifier circuit is proposed. Another easily cascadable two-amplifier circuit with a reduced number of capacitors is discussed. In the latter case the filter function is determined by certain resistive ratios. All the configurations proposed-employ integrated circuit operational amplifiers (OAs). The sensitivity problem is discussed in detail. Effects of the finite OA frequency response are also investigated.Keywords
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