Electronic signal processing system

Details Electronic signal processing system Electronic signal processing system

H - Electricity

03

B

328/159

H03B 5/00 (2006.01) G01S 3/14 (2006.01) G01S 3/16 (2006.01) H03L 5/00 (2006.01) H03L 7/06 (2006.01)

Patent

CA 1052870

ABSTRACT OF THE DISCLOSURE Disclosed is an electronic signal processing system for an alterna- ting voltage input signal. A phase-locked loop network has an input adapted to receive the signal and produce an intermediate signal comprising a sub- stantially noise free sine wave with a phase equal to the average phase of the input signal. The intermediate signal is applied to an input of a vari- able gain amplifier which produces an output signal proportional to the in- termediate signal, and an amplitude averaging loop network has the input signal and the output signal as its inputs and produces a biasing signal which is applied to a control input of the variable gain amplifier to maintain the output signal equal in amplitude to the average amplitude of said input signal. The system can be used in a Wattson-Watt type radio direction finder to eliminate noise.

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