Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2004-08-23
2008-12-16
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S350000
Reexamination Certificate
active
07466777
ABSTRACT:
When a sample stream is decimated, frequency components from outside of a desired frequency band are aliased into the desired band, causing interference and loss of information. Different decimating ratios result in different frequencies aliasing into the desired frequency band. A current-mode sampling mixer800with capacitor banks811and812that are controlled by a digital control unit820with a capability to integrate and decimate an RF current at different decimating ratios is able to measure the frequency spectrum with different decimating ratios. The measured frequency spectrum is then analyzed to detect the presence of interferers aliased into the desired frequency band. The interferers can then be eliminated or avoided.
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Feygin Gennady
Muhammad Khurram
Staszewski Robert B.
Bayard Emmanuel
Brady III Wade James
Neerings Ronald O.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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