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Stability analysis of nonlinear circuits driven with modulated signals

Abstract: Existing methods for the large-signal stability analysis of microwave circuits assume a periodic excitation, usually consisting of a single tone. However, practical circuits such as power amplifiers will generally be driven by modulated signals or multiple input tones. This paper presents a procedure for the stability analysis of linear time-varying systems, applicable to circuits excited with nonperiodic input signals. The procedure is based on the determination of the time-varying poles associated to an input-output representation of the system. Under modulated signals, this representation is obtained by linearizing the envelope-transient system that rules the circuit behavior. The formulation and methodology have been applied to a simple nonlinear circuit with arbitrary excitation and a practical power-combined amplifier at 3 GHz with very good agreement in comparison with independent simulations and experimental results.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Ramírez F., Suárez A., Lizarraga I., Collantes J.M.,

 Fuente: IEEE Transactions on Microwave Theory and Techniques, 2010, 58(4), 929-940

Editorial: Institute of Electrical and Electronics Engineers Inc.

 Fecha de publicación: 01/04/2010

Nº de páginas: 12

Tipo de publicación: Artículo de Revista

 DOI: 10.1109/TMTT.2010.2041585

ISSN: 0018-9480,1557-9670

Proyecto español: TEC2008-06874-C03-01

Url de la publicación: https://doi.org/10.1109/TMTT.2010.2041585