A simple method of designing multiple order all pole bandpass filters by cascading 2nd order sections
Nello Sevastopoulos and Richard Markell
Introduction
Filter design, be it active, passive, or switched capacitor, is traditionally a mathematically intensive pursuit. There are many architectures and design methods to choose from. Two methods of high order bandpass filter design are discussed herein. These methods allow the filter designer to simplify the mathematical design process and allow LTC’s switched capacitor filters (LTC®1059, LTC1060, LTC1061, LTC1064) to be utilized as high quality bandpass filters.
The first method consists of the traditional cascading of non-identical 2nd order bandpass sections to form the familiar Butterworth ...
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