Programmable loop bandwidth in phase locked loop (PLL) circuit

Details Programmable loop bandwidth in phase locked loop (PLL) circuit Programmable loop bandwidth in phase locked loop (PLL) circuit

2005-02-15

2005-02-15

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S156000

Reexamination Certificate

active

06856180

ABSTRACT:
A PLL circuit is described. The PLL circuit includes: a feedback loop and a loop filter coupled to the feedback loop, where the loop filter is programmable to provide one of a plurality of bandwidths. In one embodiment, the loop filter is programmable to provide one of a plurality of resistances, each resistance of the plurality of resistances corresponding to one of the plurality of bandwidths. In one embodiment, the feedback loop includes a detector and a signal generator coupled to the detector.

REFERENCES:
patent: 4475208 (1984-10-01), Ricketts
patent: 4521744 (1985-06-01), Yamada et al.
patent: 5058204 (1991-10-01), Tahernia et al.
patent: 5144173 (1992-09-01), Hui
patent: 5256980 (1993-10-01), Itri
patent: 5319735 (1994-06-01), Preuss et al.
patent: 5453706 (1995-09-01), Yee
patent: 5625358 (1997-04-01), Wilson et al.
patent: 5631920 (1997-05-01), Hardin
patent: RE35650 (1997-11-01), Partyka et al.
patent: 5712595 (1998-01-01), Yokoyama
patent: 5737329 (1998-04-01), Horiguchi
patent: 5872807 (1999-02-01), Booth et al.
patent: 5898617 (1999-04-01), Bushey et al.
patent: 5914980 (1999-06-01), Yokota et al.
patent: 6046603 (2000-04-01), New
patent: 6046646 (2000-04-01), Lo et al.
patent: 6057704 (2000-05-01), New et al.
patent: 6057739 (2000-05-01), Crowley et al.
patent: 6081164 (2000-06-01), Shigemori et al.
patent: 6091263 (2000-07-01), New et al.
patent: 6181158 (2001-01-01), Cheung et al.
patent: 6263011 (2001-07-01), Paik et al.
patent: 6275077 (2001-08-01), Tobin et al.
patent: 6282249 (2001-08-01), Tomesen et al.
patent: 6366174 (2002-04-01), Berry et al.
patent: 6389092 (2002-05-01), Momtaz
patent: 6417739 (2002-07-01), Chacko
patent: 6424209 (2002-07-01), Gorecki et al.
patent: 6441660 (2002-08-01), Ingino, Jr.
patent: 6462594 (2002-10-01), Robinson et al.
patent: 0 655 829 (1995-05-01), None
patent: 1 020 995 (2000-07-01), None

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