Multiple Frequency Locked Loops.
DEPARTMENT OF THE ARMY WASHINGTON DC
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A signal processor circuit including a plurality of similar stages, each of which is capable of locking onto and tracking a different frequency of a multiple-frequency composite signal applied to the processor. Each of the stages may comprise a frequency locked loop plus a variable frequency stop, the tuning of which tracks the frequency locked loop. The variable stop circuit passes the non-locked components to the next similar stage which locks onto one of these components. Author
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