H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 1/00 (2006.01) H03F 1/32 (2006.01) H04Q 7/20 (2006.01)
Patent
CA 2227313
A feed-forward amplifier (200) bases control of an error path (123) within the feed-forward amplifier (200) on an output signal after performing carrier cancellation to remove the carrier signal. The feed-forward amplifier (200) implements couplers (203, 212), a carrier cancellation gain/phase control block (206) and a carrier cancellation delay block (209) to cancel the carrier signal. By basing the control of the error path on a signal without the carrier signal, control of the error path (123) does not suffer from the effects of high dynamic range presented by the carrier signal, thus improving overall control of the feed-forward amplifier (200).
Cet amplificateur à correction aval (200) base la commande d'un chemin d'erreur (123) sur un signal de sortie, après avoir annulé la porteuse afin d'enlever le signal de celle-ci. Cet amplificateur (200) met également en oeuvre des coupleurs (203, 212), un bloc de commande (206) de gain/phase d'annulation de la porteuse, ainsi qu'un bloc de temporisation (209) d'annulation de la porteuse, afin d'annuler le signal de la porteuse. En basant la commande du chemin d'erreur (123) sur un signal dépourvu du signal de la porteuse, cette commande ne subit par les effets du champ dynamique élevé présenté par le signal de la porteuse, améliorant ainsi la commande globale de l'amplificateur (200) à correction aval.
Gowling Lafleur Henderson Llp
Motorola Inc.
LandOfFree
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