Adaptively extending tunable range of frequency in a closed...

Details Adaptively extending tunable range of frequency in a closed... Adaptively extending tunable range of frequency in a closed...

2006-10-10

2006-10-10

Chang, Joseph (Department: 2817)

Oscillators

With particular source of power or bias voltage

Regulated

C331S016000, C331S017000, C331S182000

Reexamination Certificate

active

07119628

ABSTRACT:
A semiconductor device or a circuit includes a controllable oscillator and circuitry that senses a voltage which may control the controllable oscillator and digitally controls a gain compensation, adaptively compensating for a drop in a gain against overall loop gain within a closed loop. In one embodiment, a single supply source may be used to power the closed loop while a variable gain stage that is digitally controllable may adjust the gain in a feed-forward manner based on the drop.

REFERENCES:
patent: 4568888 (1986-02-01), Kimura et al.
patent: 5184092 (1993-02-01), Shahriary et al.
patent: 5933037 (1999-08-01), Momtaz

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