Phase locked loop frequency synthesizer with DC data modulation

Details Phase locked loop frequency synthesizer with DC data modulation Phase locked loop frequency synthesizer with DC data modulation

1991-09-06

1992-07-14

Pascal, Robert J.

Modulators

Frequency shift keying modulator or minimum shift keying...

332127, 331 23, 375 45, 375 62, H03C 300

Patent

active

051306760

ABSTRACT:
A phase locked loop frequency synthesizer with DC data modulation capability is described. This synthesizer includes an arrangement for detecting one of a plurality of FSK data levels (61), generating a corresponding predetermined compensation signal (71) and utilizing the compensation signal to substantially continuously compensate the frequency synthesizer for normal response to the detected data modulation level.

REFERENCES:
patent: 4471328 (1984-09-01), Chapman
patent: 4581749 (1986-04-01), Carney et al.
patent: 4755774 (1988-07-01), Heck

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