Supply voltage control for a power amplifier

H - Electricity – 03 – G

Patent

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Details

H03G 3/20 (2006.01)

Patent

CA 2640162

A supply voltage to a power amplifier is controlled. A signal at a single point in a power amplifier is detected (600). A signal parameter is determined (602) for the detected signal. The signal parameter is compared (604) to at least one predetermined limit. This comparison result is used to determine (606) whether to adjust (608) a supply voltage to the power amplifier. The signal parameter is, for example, an average power or a peak-to-average power ratio.

Dans l'invention, on commande une tension d'alimentation injectée dans un amplificateur de puissance. On détecte (600) un signal, à un point unique d'un amplificateur de puissance. On détermine (602) un paramètre de signal pour le signal détecté. On compare (604) le paramètre de signal à au moins une limite prédéterminée. Ce résultat de comparaison est utilisé pour déterminer (606) si il est nécessaire de régler (608) une tension d'alimentation injectée dans l'amplificateur de puissance. Le paramètre de signal est, par exemple, un rapport moyen de puissance ou un rapport puissance de crête/moyenne.

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