Systems and methods for mitigating phase jitter in a...

Details Systems and methods for mitigating phase jitter in a... Systems and methods for mitigating phase jitter in a...

2006-05-08

2008-08-12

Mis, David (Department: 2817)

Oscillators

Ring oscillators

C331S002000, C331S010000, C331S034000, C331S17700V, C331S179000, C331S186000

Reexamination Certificate

active

07411464

ABSTRACT:
An oscillator circuit can generate a periodic signal, and a frequency adjustment circuit can adjust the frequency of the periodic signal. The periodic signal may include phase jitter. In one aspect of the invention, the phase jitter may be mitigated by connecting other circuitry to the oscillator circuit and allowing the other circuitry to draw current. In one embodiment, the other circuitry is connected in parallel with the oscillator circuit. In one embodiment, the other circuitry is configured to draw greater current to mitigate more phase jitter and to draw less current to mitigate less phase jitter. In one embodiment, a greater portion of the other circuitry is connected to the oscillator circuit for higher frequencies and a lesser portion of the other circuitry is connected to the oscillator circuit for lower frequencies.

REFERENCES:
patent: 5434525 (1995-07-01), Leonowich
patent: 6008700 (1999-12-01), Pietrzyk
patent: 6809602 (2004-10-01), Boerstler et al.

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