Method and apparatus for calibrating a local oscillator in a direct conversion receiver

This invention relates to receiver circuits and more specifically to tuning methods for PLL circuits. A receiver includes a main loop () having a main VCO () and a secondary loop () having a secondary VCO (). The receiver momentarily phase locks an incoming RF signal (), and then samples and stores...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Tilley, Keith A, Zele, Rajesh H, Kehler, Jr., Walter H
Format: Patent
Sprache:eng
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