Apparatus and methods for wide tuning-range ring oscillators

Details Apparatus and methods for wide tuning-range ring oscillators Apparatus and methods for wide tuning-range ring oscillators

2006-06-13

2006-06-13

Mis, David (Department: 2817)

Oscillators

Ring oscillators

C331S025000, C331S074000, C331S17700V, C331S17700V, C331S179000

Reexamination Certificate

active

07061334

ABSTRACT:
An integrated circuit (IC) includes a ring oscillator. One may tune the ring oscillator by controlling a power supply of the ring oscillator. One may further tune ring oscillator by varying a capacitance of at least one varactor. Using the tuning techniques, one may tune the output frequency of the ring oscillator to a desired frequency.

REFERENCES:
patent: 5317287 (1994-05-01), Brown
patent: 5955929 (1999-09-01), Moon et al.
patent: 2005/0057315 (2005-03-01), Groen et al.

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