Pilot tone detector

Details Pilot tone detector Pilot tone detector

G - Physics

01

R

G01R 23/00 (2006.01) H04B 1/76 (2006.01) H04B 17/00 (2006.01) H04Q 7/34 (2006.01)

Patent

CA 2233490

An apparatus and method for detecting the presence of a signal component in an arbitrary signal, where the signal component has a desired frequency. The apparatus includes an error signal generator and a detector. The error signal generator has an input for receiving a reference signal having a reference frequency, a second input for receiving the arbitrary signal having the signal component and an output for generating a difference signal dependent upon a difference in frequency between the reference frequency and the desired frequency. The detector has an input for receiving the difference signal and an output for producing a detector signal when the magnitude of the difference signal is greater than a threshold magnitude. The detector signal indicates the presence of the signal component in the arbitrary signal.

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