Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Unwanted signal suppression
Reexamination Certificate
2011-01-25
2011-01-25
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Unwanted signal suppression
C327S552000
Reexamination Certificate
active
07876147
ABSTRACT:
The present disclosure describes methods and apparatus for compensating DC offset in a filter having a plurality of transconductance pieces. In one implementation, the method includes measuring a corresponding DC offset associated with each transconductance piece of the plurality of transconductance pieces; storing each measured DC offset corresponding to each transconductance piece of the plurality of transconductance pieces; selecting one or more of the plurality of transconductance pieces to be used during operation of the filter; deriving an aggregate amount of DC offset for the one or more selected transconductance pieces, the aggregate amount of DC offset being derived based on each stored DC offset value corresponding to each selected transconductance piece; and applying the derived aggregate amount of DC offset to the one or more selected transconductance pieces to compensate for the DC offset during the operation of the filter.
REFERENCES:
patent: 4965867 (1990-10-01), Tsuchida et al.
patent: 5493343 (1996-02-01), Knutson et al.
patent: 6311051 (2001-10-01), Jung
patent: 6680654 (2004-01-01), Fischer et al.
An Fu-Tai
Liu Xuemei
Le Dinh T.
Marvell International Ltd.
LandOfFree
Background offset cancellation scheme for continuous time... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Background offset cancellation scheme for continuous time..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Background offset cancellation scheme for continuous time... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2630940