Signal generator for generating a jitter/wander output

Details Signal generator for generating a jitter/wander output Signal generator for generating a jitter/wander output

1996-09-06

1998-04-21

Mis, David

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

331 2, 331 17, 331 18, 331 78, 327156, H03B 2900, H03L 706, H03L 718

Patent

active

057422087

ABSTRACT:
A signal generator has a variable reference oscillator, a variable oscillator and a phase locked loop for generating an output having jitter and wander. The variable reference oscillator generates a reference having a varying phase offset over a first phase modulation frequency interval and a constant output over a second phase modulation frequency interval. The variable oscillator generates a constant output over the first phase modulation frequency interval and a variable output over the second phase modulation frequency interval. The phase locked loop includes a phase detector, a phase summing node and oscillator with the phase detector coupled to receive the outputs of the variable reference oscillator and the oscillator, and phase summing node coupled to receive the outputs of the variable oscillator and the phase detector. The output of the phase locked loop tracks the variable reference oscillator over the first phase modulation frequency interval and generates a phase modulated output in response to the variable output of the variable oscillator over the second phase modulation frequency interval.

REFERENCES:
patent: 5325075 (1994-06-01), Rapeli
patent: 5351014 (1994-09-01), Ichiyoshi
patent: 5424688 (1995-06-01), Phillips
patent: 5428308 (1995-06-01), Maeda

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