Title :
Nonlinear performance of composite-amplifier filters
Author :
Bowron, P. ; Al-Kabbani, Ahmad S S
Author_Institution :
Sch. of Electr. & Electron. Eng., Bradford Univ., UK
Abstract :
The large-signal characteristics of some composite-amplifier filter structures using two operational amplifiers are analyzed in terms of describing functions. Conditions for linearization are developed for both inverting and noninverting configurations. Second-order nonlinear effects are minimized and overdriven nonlinear oscillations formulated. It is concluded that the price paid for introducing composite amplifiers in active filters is to increase the susceptibility to nonlinear oscillation without improving the dynamic range.<>
Keywords :
active filters; nonlinear network analysis; operational amplifiers; sensitivity analysis; stability; active filters; composite-amplifier filters; describing functions; inverting configurations; large-signal characteristics; linearisation conditions; noninverting configurations; nonlinear performance; operational amplifiers; overdriven nonlinear oscillations; Band pass filters; Bandwidth; Circuits; Differential amplifiers; Dynamic range; Educational institutions; Harmonic distortion; Operational amplifiers; Stability; Voltage;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15535
