Frequency divider monitor of phase lock loop

Details Frequency divider monitor of phase lock loop Frequency divider monitor of phase lock loop

2008-04-22

2008-04-22

Pascal, Robert (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S011000, C331S017000, C331S034000, C324S076530

Reexamination Certificate

active

11276410

ABSTRACT:
A circuit and method for monitoring a frequency divider. The circuit including a phase locked loop circuit including a voltage controlled oscillator and a feedback frequency divider, an output of the voltage controlled oscillator connected to an input of the feedback frequency divider, and output of the feedback frequency divider coupled to an input of the voltage controlled oscillator; and a frequency divider monitor having a first input, a second input and an output, the first input of the frequency divider monitor connected to the output of the voltage controlled oscillator and the second input of the frequency divider monitor coupled to an output of the feedback frequency divider.

REFERENCES:
patent: 5119043 (1992-06-01), Borwn et al.
patent: 5838202 (1998-11-01), Kosiec et al.
patent: 6008655 (1999-12-01), Kuroda
patent: 6859028 (2005-02-01), Toner
patent: 2003/0113122 (2003-06-01), Koga

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