FSK demodulation circuit

Details FSK demodulation circuit FSK demodulation circuit

1988-08-29

1989-09-26

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 94, 329303, H03D 318

Patent

active

048706590

ABSTRACT:
An FSK demodulation circuit which receives as input an FSK modulated reception signal, obtains two quadrature pulse trains, i.e., a first pulse train and a second pulse train, from a phase detection circuit, is provided with at least two sampling means which use the edge of one of the pulse trains and sample the logic of the other pulse train, produces two or more sample outputs at different timings, and determines the logic of the reproduced data from a combination of the logics "1" and "0" of the sample outputs.

REFERENCES:
patent: 4338579 (1982-07-01), Rhodes
patent: 4501002 (1985-02-01), Auchterlonie
patent: 4718113 (1988-01-01), Rother et al.
patent: 4745627 (1988-05-01), Grubser
patent: 4752742 (1988-06-01), Akaiwa
I. A. W. Vance, B. Eng., M. Sc, "Fully integrated radio paging receiver", IEE PROC., vol. 129, Pt. F, No. 1, Feb. 1982, pp. 2 to 6.

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