A Multi-harmonic Model Taking into Account Coupling Effects of Long- and Short-term Memory in SSPAs
- Author:
C.Maziere, E.Gatard, AMCAD Engineering
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-parameters 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.
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