Synthesizer circuit

Details Synthesizer circuit Synthesizer circuit

1981-11-09

1984-05-08

Zazworsky, John

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

331 18, 455 76, 455260, H03C 306

Patent

active

044477929

ABSTRACT:
A frequency synthesizer utilizing a phased locked loop is provided with input modulating signals for the reference oscillator and for the voltage controlled oscillator. Where the frequency of the reference oscillator must be divided, a time delay circuit between the input modulating signal and the voltage controlled oscillator is provided in order to eliminate or appreciably reduce deviation magnitude responsive distortion with respect to input modulating frequencies.

REFERENCES:
patent: 3622913 (1971-11-01), Shipley
patent: 4027274 (1977-05-01), Fukui et al.
patent: 4320357 (1982-03-01), Wulfsberg et al.
patent: 4347484 (1982-08-01), Vandegraf

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