A power amplifier envelope distortion model using direct calculation of polynomial parameters and delay taps

Nicusor Calinoiu (1) , Smail Bachir (2) , Claude Duvanaud (2)

1 LAII [Poitiers] - Laboratoire d'automatique et d'informatique industrielle [EA 1219]
2 SIC

This paper presents a power amplifier (PA) cascade model, using two polynomial functions for amplitude and phase variations and multiple delay taps. This model allows an accurate modeling of the output envelope distortion and spectral asymmetries. To extract the model coefficients and delays for each non linearity order, an analytical method is developed. This method uses the Fourier transform of the output gain and phase to calculate all the parameters. To demonstrate the performances of this modeling approach, comparison between measured and simulated data has been performed.

Mots clés: power amplifier; modeling; modelling

Domaines: Electronique; Automatique / Robotique

Nicusor Calinoiu, Smail Bachir, Claude Duvanaud. A power amplifier envelope distortion model using direct calculation of polynomial parameters and delay taps. European Microwave Integrated Circuits Conference (EuMIC), Oct 2011, Manchester, United Kingdom. pp.292 - 295. ⟨hal-00782266⟩