Apparatus for adjusting the efficiency of electric power...

H - Electricity – 03 – G

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H03G 1/00 (2006.01) H03G 3/20 (2006.01) H04J 3/02 (2006.01)

Patent

CA 2102735

A current flowing from a power supply to a power amplification circuit is detected at two adjacent transmission periods having a non-transmission period therebetween. Between the two transmission periods, whether the current is increased or decreased is detected. When the increase is detected, an efficiency control signal is obtained to be supplied to the power amplification circuit by subtracting an increased amount between the two preceding transmission periods from an efficiency control signal used at the last preceding transmission period, and, when the decrease is detected, the efficiency control signal is obtained to be supplied to the power amplification circuit by adding the increased amount to the efficiency control signal used at the last preceding transmission period.

Un courant circulant entre un bloc d'alimentation et un circuit amplificateur de puissance est détecté à deux périodes de transmission adjacentes séparées par une période de non-transmission. Entre les deux périodes de transmission, la variation du courant, qu'elle soit positive ou négative, est détectée. Quand une augmentation est détectée, un signal de commande de rendement, qui est transmis au circuit amplificateur de puissance, est obtenu en soustrayant du signal de commande de rendement utilisé à la période de transmission précédente, l'augmentation entre les deux périodes de transmission précédentes, et, quand une diminution est détectée, le signal de commande de rendement à transmettre au circuit d'amplification de puissance est obtenu en ajoutant l'augmentation au signal de commande de rendement utilisé à la période de transmission précédente.

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