H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 1/32 (2006.01)
Patent
CA 2347811
A feedforward amplifier combines an input signal delayed by a delay circuit 24 with an output signal by a combiner 51; down-converts the output of the combiner 51 to a low frequency by a frequency converter 53; extracts a distortion component from the output of the frequency converter 53; measures the distortion component by a power detector 55; and controls a second vector regulator 11 of a distortion canceling loop 102 by a controller 56 such that the distortion component measured becomes minimum.
Selon cette invention, un signal d'entrée temporisé provenant d'un circuit (24) à retard et un signal de sortie sont combinés au moyen d'un combineur (51). La sortie du combineur (51) est convertie en un signal basse fréquence par un convertisseur (53) de fréquence. Des composantes de distorsion sont extraites de la sortie du convertisseur (53) de fréquence et mesurées par un détecteur (55) de puissance. Un circuit (56) de commande commande un second contrôleur (11) vectoriel dans une boucle (102) d'annulation de distorsion afin de minimiser les composantes de distorsion mesurées.
Horiguchi Kenichi
Ikeda Yukio
Nagano Junichi
Nakayama Masatoshi
Sakai Yuji
Kirby Eades Gale Baker
Mitsubishi Denki Kabushiki Kaisha
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