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...

2005-04-26

2005-04-26

Pascal, Robert (Department: 2817)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C331S017000

Reexamination Certificate

active

06885873

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: 5548814 (1996-08-01), Lorang et al.
patent: 5739730 (1998-04-01), Rotzoll
patent: 6091304 (2000-07-01), Harrer
patent: 6134425 (2000-10-01), Willwerth
patent: 6163276 (2000-12-01), Irving et al.
patent: 20030025566 (2003-02-01), Rogers

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