Linearization of radio frequency amplifiers using nonlinear Internal Model Control method

Smail Bachir (1) , Claude Duvanaud (1)

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

In the present paper, the nonlinear Internal Model Control (IMC) method is introduced and applied to linearize high frequency power amplifiers (PAs). The IMC is based on the description of a process model and of a controller. It is shown that baseband frequency descriptions are suitable for the model and the controller. Their description parameters are derived from input and output modulation signals processed in Cartesian form. Simulation results are given to illustrate the design procedure and to demonstrate the performances of the IMC linearizer.

Mots clés: Power amplifiers; Linearization technique; Internal Model Control; Parameters identification; Baseband signals; Predistortion

Domaines: Electronique; Automatique / Robotique

Smail Bachir, Claude Duvanaud. Linearization of radio frequency amplifiers using nonlinear Internal Model Control method. AEÜ - International Journal of Electronics and Communications / Archiv für Elektronik und Übertragungstechnik, 2011, 65 (6), pp.495-501. ⟨10.1016/j.aeue.2010.07.004⟩. ⟨hal-00782014⟩