Dc offset compensation method and apparatus

Details Dc offset compensation method and apparatus Dc offset compensation method and apparatus

H - Electricity

03

D

H03D 1/00 (2006.01) H04L 25/06 (2006.01) H04L 27/06 (2006.01)

Patent

CA 2257238

A DC offset measurement and compensation circuit includes a switch arrangement (14) for establishing a zero carrier condition in the circuit. The circuit ouput is integrated (30, 32) to develop any DC offsets, which are converted to analog form (34, 36) and subtracted (18, 20) from the signal output. A reference (REF) may also be subtracted (26, 28) to establish a base digital level for the output.

Circuit de mesure et de compensation du décalage en continu qui comporte un dispositif de commutation (14) permettant d'établir un état de porteuse nulle dans le circuit. La sortie du circuit est intégrée (30, 32) pour développer tout décalage en continu qui est converti en forme analogique (34, 36) et soustrait (18, 20) du signal de sortie. Une référence (REF) peut également être soustraite (26, 28) pour établir un niveau numérique de base pour la sortie.

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