Global stability analysis and stabilization of power amplifier

Published on Nov 1, 2008
· DOI :10.1109/INMMIC.2008.4745722
Almudena Suárez Rodríguez23
Estimated H-index: 23
(UC: University of Cantabria),
Sanggeun Jeon13
Estimated H-index: 13
(California Institute of Technology),
David B. Rutledge33
Estimated H-index: 33
(California Institute of Technology)
Power amplifiers often exhibit undesired behavior from certain input power value which cannot be predicted with a small-signal stability analysis. Among the commonly observed undesired phenomena are spurious oscillations, frequency divisions, hysteresis or chaos. In this contribution, simulation tools are presented, enabling an in-depth study of the origin and characteristics of these phenomena. The developed global stability analysis and stabilization tools have allowed an efficient suppression of the undesired behavior in a switching-mode power amplifier, with minimum degradation of the amplifier performance, in terms of drain efficiency and output power.
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View next paperGlobal stability analysis and stabilization of power amplifiers