Hybrid DC offset cancellation scheme for wireless receiver

Details Hybrid DC offset cancellation scheme for wireless receiver Hybrid DC offset cancellation scheme for wireless receiver

2007-05-08

2007-05-08

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S119000, C341S120000

Reexamination Certificate

active

10851307

ABSTRACT:
Systems and methods for canceling static and dynamic DC offsets by combining a digital DC offset correction scheme with an analog DC offset correction scheme. A feedback-based digital DC offset correction scheme provides different adjustment levels for a plurality of discrete gain states and the analog DC offset correction scheme operates in different cancellation modes dependent on a frame structure. A digital DC offset correction scheme collects DC offset control information and provides adjustment levels. In addition, a negative-feedback based switchable high pass filter has a plurality modes of operation, where one mode of operation includes an all-pass filter.

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