Patent ID: 6647073
Filing Date: 2003-11-11
Classification: H03C,H03F,H04L

Abstract:
A linearisation and modulation device in a power amplifier, comprisinga digital vector modulator for generating a modulated digital signal (IF_MOD) on the basis of digital baseband signals (IIN, QIN) and digital carrier signals (PH_S, PH_C); a correction value generating means for generating an amplitude correction value (CV_AMAM) and a phase correction value (CV_AMPM) on the basis of said digital baseband signals (IN, QIN) and on the basis of a non-linearity distortion generated in said power amplifier arranged in a subsequent stage; an amplitude correction means for generating a corrected digital signal (IF_OUT) on the basis of said modulated digital signal (IF_MOD) and said amplitude correction value (CV_AMAM); a phase correction means for generating a corrected phase control signal on the basis of said phase correction value and an output signal of a phase control signal generation means; and a carrier signal generating means for generating said carrier signals (PH_S, PH_C) on the basis of an output of said phase correction means.