Digital phase locked loop tracking
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United States of America Patent
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Jul 18, 2023
Grant Date -
Nov 18, 2021
app pub date -
Jul 28, 2021
filing date -
Apr 15, 2019
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Abstract
A tracking system for a digital Phase Locked Loop (PLL), the tracking system including a PLL model configured to emulate an actual internal PLL signal, wherein the emulation is based on another internal PLL signal received from the digital PLL and on an estimated analog PLL parameter of the PLL model; and a tracker configured to compare the emulated internal PLL signal with the actual internal PLL signal, and to update the estimated analog PLL parameter according to a minimization algorithm that minimizes a result of the comparison.
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