System and method for clock jitter compensation in direct RF receiver architectures
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United States of America Patent
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Aug 13, 2013
Grant Date -
Jul 29, 2010
app pub date -
Dec 2, 2009
filing date -
Dec 18, 2008
priority date (Note) -
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Abstract
Systems and methods that provide clock jitter compensation architectures that improve the performance of direct radio frequency (RF) receivers by injecting a calibration tone into the received radio frequency (RF) signals in order to help identify and then compensate for the clock jitter noise. After injecting the tone, the jitter noise going through the direct RF bandpass sampling receiver is estimated using a narrow bandwidth filter, and the received signals are further processed and demodulated depending on the Nyquist zone of the received signal. The relative modulation factor for the modulation is computed and then applied to the Nyquist zone to de jitter that particular Nyquist zone.
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