Method and apparatus for fast lock time

Details Method and apparatus for fast lock time Method and apparatus for fast lock time

H - Electricity

03

L

H03L 7/08 (2006.01) H03L 7/085 (2006.01) H04L 7/033 (2006.01) H03L 7/14 (2006.01)

Patent

CA 2172334

A system and method for fast frequency locking are provided in which the phase difference between first and second synchronization signals is measured (22). The frequency difference between the two signals is then determined (24). The frequency of the second synchronization signal is then set to that of the first synchronization signal (26). Thereafter, the feedback loop of a phase-locked loop circuit is closed, with an error signal representative of the phase difference between the first and second synchronization signals being offset by an amount equal to an error signal generated when the frequency of the second synchronization signal is set to that of the first synchronization signal.

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