Feedforward linearization of rf power amplifiers

Details Feedforward linearization of rf power amplifiers Feedforward linearization of rf power amplifiers

H - Electricity

03

F

H03F 1/32 (2006.01)

Patent

CA 2720162

RF amplifier system (200) incorporating feedforward linearization. The system includes a digital waveform source (202) generating digital data s(t) representative of at least one analog signal. The system also includes a feedforward linearization circuit for reducing a distortion of an RF power amplifier (212). The feedforward linearization circuit includes a differential am-plifier (230) arranged for generating an error signal. The error signal is determined based on a difference between the distorted RF output signal and an analog RF reference signal (229) generated from the digital data.

L'invention concerne un système d'amplificateurs HF (200) incorporant une linéarisation aval. Le système inclut une source numérique de signal (202) générant des données numériques s(t) représentatives d'au moins un signal analogique. Le système inclut également un circuit de linéarisation aval permettant de réduire une distorsion sur un amplificateur de puissance HF (212). Le circuit de linéarisation aval inclut un amplificateur différentiel (230) disposé pour générer un signal d'erreur. Le signal d'erreur est déterminé sur la base d'une différence entre le signal de sortie HF déformé et un signal HF analogique de référence (229) généré à partir des données numériques.

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