Dual clock spread for low clock emissions with recovery

Details Dual clock spread for low clock emissions with recovery Dual clock spread for low clock emissions with recovery

2008-04-29

2009-02-24

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Synchronizers

C375S329000, C327S291000

Reexamination Certificate

active

07496166

ABSTRACT:
A method and apparatus provides for the generation and recovery of a stable clock signal having harmonic emission suppressions using dual spread spectrum clock signals. The transmission frequencies of non-mixed, spread spectrum lower frequency clock signals may be varied and, upon receipt of these non-mixed signals, they are mixed into sum and difference signals. The sum signal thus generated is representative of the desired clock signal to be recovered. Such conditioning of the non-mixed signals need only occur within the receiver, thereby allow the channel that transmits the non-mixed lower frequency clock signals to the receiver to be lower bandwidth than would be required to carry the final, recovered, and higher frequency clock signal produced by the receiver.

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