DEVICE FOR CORRECTING A QUADRATURE FAULT OF A QUADRATURE MODULATOR AND / OR A DEMODULATOR OF A SIGNAL WITH A PLURALITY OF PHASE STATES, TRANSMITTER AND RECEIVER CORRESPONDING

摘要

The invention relates to a device for correcting a quadrature defect of a quadrature modulator and / or a demodulator of a signal with a plurality of phase states or states of amplitude and phase. BR/ The correction device comprises processing means (51) which, when the invention is used to correct a quadrature defect of a demodulator, transform the P and Q levels of the digital signals coming from the demodulation stage in corrected levels P 'and Q' according to any one of the following eight relations: BR/ (CF DRAWING IN BOPI) BR/ These corrected levels are then applied, possibly after equalizing their maximum levels , at decision means (72). BR/ The invention combines correction accuracy and low cost and makes it possible to correct any quadrature defect. / P