Receiver I/Q group delay mismatch correction

A device for minimizing group delay mismatch in a quadrature receiver having an in-phase channel and a quadrature-phase channel. The device includes a microprocessor for determining an I/Q phase imbalance between digital signals on an in-phase channel and digital signals on a quadrature-phase channe...

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Bibliographische Detailangaben
1. Verfasser: Gorday, Robert Mark
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A device for minimizing group delay mismatch in a quadrature receiver having an in-phase channel and a quadrature-phase channel. The device includes a microprocessor for determining an I/Q phase imbalance between digital signals on an in-phase channel and digital signals on a quadrature-phase channel, and for calculating a group delay mismatch between the in-phase channel and the quadrature-phase channel, and a group delay equalizer. The group delay equalizer includes a delay line ( and ) for delaying one of the in-phase channel and the quadrature-phase channel by one of a plurality of delays, based on an amount of group delay mismatch.