New criteria to check conditional stability of microwave amplifiers with input and output terminations varying in pre-specified circular regions surrounding complex nominal values are proposed. Necessary and sufficient conditions are provided both in terms of the immittance parameters Lambdaij (i.e., zij , yij , gij or hij) and in terms of the scattering parameters sij. Proposed conditions can be easily implemented in any commercial computer-aided design tool and are suitable to be used as design goals within an optimization routine: this allows to optimize the tradeoff between stability constraints under termination variations and performance in a yield-oriented design flow. A case study, in which a distributed amplifier has been designed, shows the advantages of the proposed approach.

Necessary and sufficient conditions for the stability of microwave amplifiers with variable termination impedances / Olivieri, Mauro; Scotti, Giuseppe; Tommasino, Pasquale; Trifiletti, Alessandro. - In: IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. - ISSN 0018-9480. - 53:(2005), pp. 2580-2586. [10.1109/TMTT.2005.852759]

Necessary and sufficient conditions for the stability of microwave amplifiers with variable termination impedances

OLIVIERI, Mauro;SCOTTI, Giuseppe;TOMMASINO, PASQUALE;TRIFILETTI, Alessandro
2005

Abstract

New criteria to check conditional stability of microwave amplifiers with input and output terminations varying in pre-specified circular regions surrounding complex nominal values are proposed. Necessary and sufficient conditions are provided both in terms of the immittance parameters Lambdaij (i.e., zij , yij , gij or hij) and in terms of the scattering parameters sij. Proposed conditions can be easily implemented in any commercial computer-aided design tool and are suitable to be used as design goals within an optimization routine: this allows to optimize the tradeoff between stability constraints under termination variations and performance in a yield-oriented design flow. A case study, in which a distributed amplifier has been designed, shows the advantages of the proposed approach.
2005
01 Pubblicazione su rivista::01a Articolo in rivista
Necessary and sufficient conditions for the stability of microwave amplifiers with variable termination impedances / Olivieri, Mauro; Scotti, Giuseppe; Tommasino, Pasquale; Trifiletti, Alessandro. - In: IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. - ISSN 0018-9480. - 53:(2005), pp. 2580-2586. [10.1109/TMTT.2005.852759]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/234991
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