Title :
Current-mode OTA-C realisation of arbitrary filter characteristics
Author :
Sun, Y. ; Fidler, J.K.
Author_Institution :
Dept. of Electron., York Univ., UK
fDate :
6/20/1996 12:00:00 AM
Abstract :
Two universal current-mode integrator-based OTA-C filter structures are presented. General explicit design formulas are derived. The filter architectures proposed are constructed using a canonical FLF configuration with an input distribution or output summation network. They are comprehensive in function. By setting any particular input distributing or output summing weights (transconductances), we can realise arbitrary approximation characteristics. It is also straightforward to obtain universal filter architectures and the corresponding design formulae of any particular order. The universal second and third order filters and design formulas are discussed in detail
Keywords :
active filters; all-pass filters; band-pass filters; biquadratic filters; continuous time filters; high-pass filters; integrating circuits; linear network synthesis; low-pass filters; operational amplifiers; arbitrary approximation characteristics; canonical FLF configuration; current-mode OTA-C realisation; design formulas; input distribution network; integrator-based filter structures; output summation network; second order filters; third order filters; universal OTA-C filter structures; universal filter architectures;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960807
