Device of the phase-locked loop type for demodulating a frequenc

Details Device of the phase-locked loop type for demodulating a frequenc Device of the phase-locked loop type for demodulating a frequenc

1996-10-29

1998-07-28

Mis, David

Demodulators

Frequency modulation demodulator

Input signal combined with local oscillator or carrier...

329326, 331 17, 331 23, 331 36C, 331175, 331177V, 333214, 348726, 455214, 455337, H03D 300, H03B 508, H03L 7099, H03H 1148

Patent

active

057867267

ABSTRACT:
Device of the phase-locked loop type for demodulating a frequency-modulated signal. Device for frequency demodulation, using a phase-locked loop. According to the invention, for linearizing the variation of the frequency of a local oscillator (11) as a function of its control signal (Vb), a variable capacitance (Cv) is formed by an electronic module (20) which supplies the equivalent of a capacitance whose variation as a function of the control voltage (Vb) has a linearity deviation which is established for compensating the linearity deviation of the frequency of the oscillator as a function of the value of the capacitance (Cv).

REFERENCES:
patent: 4612511 (1986-09-01), Naito et al.
patent: 5030927 (1991-07-01), Itoh
patent: 5510755 (1996-04-01), Kodrnja et al.

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