Fast filter calibration apparatus
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United States of America Patent
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Oct 14, 2014
Grant Date -
Nov 29, 2012
app pub date -
May 24, 2011
filing date -
May 24, 2011
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Abstract
A fast filter calibration system includes a multi clock generator, an analog filter including a variable capacitor and a fast calibration apparatus. The fast calibration apparatus further includes a phase comparator, a frequency detector and a fast calibration unit. The fast calibration unit stores a binary code corresponding to a bandwidth frequency of a filter and initiates a fast filter calibration by calibrating the filter from a binary code close to a guaranteed-by-design binary code for the bandwidth frequency to be calibrated.
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