Title :
Simplified model of an amplifier with two poles and a pole-zero doublet
Author :
Palmisano, G. ; Palumbo, G.
Author_Institution :
Dipartimento Elettrico, Elettronico e Sistemistico, Catania Univ., Italy
Abstract :
A simple representation of an open-loop two-pole amplifier with a pole-zero doublet is proposed. It is based on the consideration that a pole-zero doublet does not greatly modify the behaviour of the closed-loop two-pole amplifier. Indeed, assuming an underdamped behaviour we have found that the pole-zero doublet only affects the phase margin and, hence, it can accurately be accounted by properly modifying the second pole of the original two-pole amplifier
Keywords :
feedback amplifiers; poles and zeros; closed-loop two-pole amplifier; model; open-loop two-pole amplifier; phase margin; pole-zero doublet; Capacitors; Feedback amplifiers; Frequency conversion; Frequency response; Mirrors; Poles and zeros; Stability; Time factors; Transfer functions; Voltage;
Conference_Titel :
Electronics, Circuits, and Systems, 1996. ICECS '96., Proceedings of the Third IEEE International Conference on
Conference_Location :
Rodos
Print_ISBN :
0-7803-3650-X
DOI :
10.1109/ICECS.1996.582715
