DC OFFSET COMPENSATION IN ZERO-INTERMEDIATE FREQUENCY MODE OF A RECEIVER
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United States of America Patent
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Issued Date -
Jun 2, 2022
app pub date -
Nov 30, 2020
filing date -
Nov 30, 2020
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Abstract
A method for operating a radio frequency communications system includes, while operating a first radio frequency communications device in a calibration mode, for each setting of a plurality of settings of a programmable gain amplifier in a receiver of the first radio frequency communications device configured in a zero-intermediate frequency mode of operation, generating an estimate of a DC offset in each of a plurality of digital samples received from an analog circuit path including the programmable gain amplifier, and storing in a corresponding storage element, a compensation value based on the estimate.
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