Compensation circuitry for dual port phase-locked loops

Details Compensation circuitry for dual port phase-locked loops Compensation circuitry for dual port phase-locked loops

1987-08-03

1988-05-10

LaRoche, Eugene R.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 18, 332 19, 331 16, 331 17, 331 25, 331179, 455260, H03C 308, H03C 309, H03L 708

Patent

active

047438673

ABSTRACT:
Phase port gain compensating circuitry is coupled to the phase modulation summing circuit and voltage controlled oscillator (VCO) gain compensating circuitry is coupled to the frequency control terminal of the VCO. Compensator control circuitry utilizes divider ratio control information to control the characteristics of the two compensators to compensate for otherwise undesirable effects on the phase-locked loop response parameters caused by changes in the divider ratio and in the VCO gain.

REFERENCES:
patent: 4568888 (1986-02-01), Kimura et al.
daSilva, Marcus; "Synthesis of FM Signals", r.f. design, Sep./Oct. 1984, pp. 29-38.

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