Method of recovering a frequency modulated signal

Details Method of recovering a frequency modulated signal Method of recovering a frequency modulated signal

1993-10-08

1995-05-23

Pascal, Robert J.

Demodulators

Frequency modulation demodulator

Input signal split into plural signals

329306, 329323, 329336, 329315, 455324, 455214, 455337, 455209, 375324, 375334, H03D 300

Patent

active

054184894

ABSTRACT:
An apparatus and method is provided of recovering a frequency modulated signal having a first component of the frequency modulated signal at a zero-RF spectral location and a second component of the frequency modulated signal at a zero-RF spectral location in quadrature relationship to the first component. The method includes the steps of: upconverting and summing the first and second components to produce a reference signal (100), time delaying the first and second components, upconverting and summing the delayed, upconverted first and second components to produce a delayed reference signal (101) in quadrature relationship to the reference signal; limiting the reference and delayed signal (102); and exclusive or-ing (103) the limited reference and limited delayed signal.

REFERENCES:
patent: 3990016 (1976-11-01), Dimon
patent: 4462107 (1984-07-01), Vance
patent: 4528513 (1985-07-01), Dieterich
patent: 4651107 (1987-03-01), Akaiwa
patent: 4682117 (1987-07-01), Gibson
patent: 4755761 (1988-07-01), Ray, Jr.
patent: 4833416 (1989-05-01), Attwood
patent: 4910800 (1990-03-01), Chung
patent: 4944025 (1990-07-01), Gehring et al.
patent: 4995052 (1991-02-01), Thorvaldsen
patent: 5081650 (1992-01-01), Hasegawa et al.
patent: 5309113 (1994-05-01), Mimura et al.

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