Title :
Stability and active compensation of OTA-C continuous time high frequency filters
Author :
Barúqui, Fernando ; Calôba, Luiz P.
Author_Institution :
Federal Univ. of Rio de Janeiro, Brazil
Abstract :
The frequency dependence of the operational transconductance amplifier (OTA) is the main problem in high-frequency OTA-C filters, and may produce transfer function distortions and filter instability. General and easy-to-apply methods to guarantee filter stability and provide active compensation are presented. Experimental results agree with the theory and the computational simulations
Keywords :
active filters; frequency stability; operational amplifiers; transfer functions; active compensation; filter instability; filter stability; frequency dependence; high-frequency OTA-C filters; operational transconductance amplifier; transfer function distortions; Capacitors; Frequency dependence; Impedance; Integrated circuit modeling; MOSFETs; Nonlinear filters; Parasitic capacitance; Stability analysis; Transconductance; Transfer functions;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.101821
