Title :
Active and digital ladder-based allpass filters
Author :
Ping, Li ; Sewell, J.I.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
fDate :
12/1/1990 12:00:00 AM
Abstract :
Ladder-based allpass filters are extended for active RLC, active RC, SC and digital realisations. The resulting circuits have the attractive properties of parallel structure and very low amplitude sensitivity to component changes. The analogue implementations are canonical with respect to the number of op amps and the digital ones are multiplier canonic. Detailed examples are given for SC designs and these are critically assessed for capacitance spread and sensitivity
Keywords :
active filters; all-pass filters; digital filters; ladder networks; network synthesis; switched capacitor filters; RC digital realisation; RLC digital realisation; SC digital realisation; active filters; analogue implementations; capacitance spread; digital amplifiers; digital ladder-based allpass filters; low amplitude sensitivity; operational amplifiers; parallel structure; sensitivity; switched capacitor design;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings G
