The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2013
Filed:
Dec. 02, 2009
Gerald L. Fudge, Rockwall, TX (US);
Mark A. Chivers, McKinney, TX (US);
Sujit Ravindran, Dallas, TX (US);
Alex Yeh, Rockwall, TX (US);
Gerald L. Fudge, Rockwall, TX (US);
Mark A. Chivers, McKinney, TX (US);
Sujit Ravindran, Dallas, TX (US);
Alex Yeh, Rockwall, TX (US);
L-3 Communications Integrated Systems, L.P., Greenville, TX (US);
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.