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A multi-harmonic model taking into account coupling effects of long- and short-term memory in SSPAs

Published online by Cambridge University Press:  18 February 2013

Christophe Maziere ,
Emmanuel Gatard ,
Cedric Enguehard  and
Bjorn Gustavsen
Christophe Maziere*
Affiliation:
AMCAD Engineering, 1 Avenue d'Ester, 87069 Limoges, France
Emmanuel Gatard
Affiliation:
AMCAD Engineering, 1 Avenue d'Ester, 87069 Limoges, France
Cedric Enguehard
Affiliation:
AMCAD Engineering, 1 Avenue d'Ester, 87069 Limoges, France
Bjorn Gustavsen
Affiliation:
SINTEF Energy Research, N-7465 Trondheim, Norway
*
Corresponding author: C. Mazière Email: [email protected]
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Abstract

This paper presents a new macro modeling methodology for solid-state power amplifiers (SSPAs) and packaged transistors used in communication systems. The model topology is based on the principle of harmonic superposition recently introduced by Agilent Technologies' X-parametersTM combined with dynamic Volterra theory. The resulting multi-harmonic bilateral model takes into account the coupling effects of both short- and long-term memory in SSPAs. In this work, the behavioral model was developed from time-domain load pull and used to simulate the amplifier's response to a 16-QAM signal with specific regards to ACPR and IM3.

Keywords

Power amplifiers and linearizersLinear and nonlinear CAD techniques
Type
Industrial and Engineering Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Special Issue 2: Special Issue on Power Amplifier Linearization , April 2013 , pp. 141 - 148
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013

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References

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