MULTIPLE-TAP IQ COMPENSATION AND CALIBRATION

Corrections are provided for mismatches between an in-phase (I) signal and a quadrature-phase (Q) signal, the I and Q signals having a first frequency band. A frequency filter circuit filters the I and Q signals to produce a filtered I and Q output with a second frequency band that is a subset of th...

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Bibliographische Detailangaben
Hauptverfasser:	RUTTEN, Robert, BOLATKALE, Muhammed, BAJORIA, Shagun, BREKELMANS, Johannes Hubertus Antonius, NIEHOF, Jan, BREEMS, Lucien Johannes
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	Corrections are provided for mismatches between an in-phase (I) signal and a quadrature-phase (Q) signal, the I and Q signals having a first frequency band. A frequency filter circuit filters the I and Q signals to produce a filtered I and Q output with a second frequency band that is a subset of the first frequency band. Digital circuitry includes a multiple-tap correction filter having a plurality of taps and configured to generate I and Q output signals by filtering the I and Q signals according to respective sets of coefficients for the plurality of taps. A coefficient estimator generates the sets of coefficients relative to different frequency bands.