| US 7,522,005 B1 | ||
| KFM frequency tracking system using an analog correlator | ||
| John B. Groe, Poway, Calif. (US); and Kenneth Scott Walley, Carlsbad, Calif. (US) | ||
| Assigned to Sequoia Communications, San Diego, Calif. (US) | ||
| Filed on Jul. 27, 2007, as Appl. No. 11/829,828. | ||
| Claims priority of provisional application 60/834199, filed on Jul. 28, 2006. | ||
| Int. Cl. H03L 7/08 (2006.01); H03L 7/099 (2006.01); H03L 7/18 (2006.01) | ||
| U.S. Cl. 331—16 [331/1 A; 331/17] | 7 Claims |
| 1. Apparatus providing a phase/frequency modulation system, the apparatus comprising:
a first circuit configured to introduce an offset to center a signal applied to a VCO;
a second circuit configured to set a gain of the VCO; and
a frequency tracking network configured to dynamically adjust one or both of the offset and the gain.
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