A class of complementary IIR filters
1999 (English)In: International symposium on circuits and systems,1999, 1999, 3/299- p.Conference paper (Refereed)
A class of complementary IIR filters is introduced. One of these filters can be realized as a tapped cascaded interconnection of identical allpass subfilters. The complementary filter is then obtained automatically by adding some extra allpass subfilters and a subtractor. The proposed filters are always allpass complementary and, under certain conditions, also magnitude complementary. Further, in terms of the frequency selectivity, they exhibit properties similar to those of complementary linear-phase FIR filters. These properties are retained also after coefficient quantization. The design of the filters is divided into the design of a prototype FIR filter and a prototype IIR filter being realizable as a parallel connection of two allpass filters. Design examples are included for demonstration.
Place, publisher, year, edition, pages
1999. 3/299- p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-34490Local ID: 21551OAI: oai:DiVA.org:liu-34490DiVA: diva2:255338