Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Colm J. Prendergast0
Thomas J. Liptay0
Edmund J. Balboni0
Daniel E. Fague0
Date of Patent
April 3, 2007
0Patent Application Number
103531030
Date Filed
January 27, 2003
0Patent Primary Examiner
Patent abstract
Frequency offsets between a received carrier signal and a receiver's LO frequency are compensated by determining the offset and adjusting the phase of a demodulated signal derived from the modulated carrier. For frequency offsets that produce DC voltage offsets in I and Q components of the demodulated signal, the phase correction is implemented by operating upon the I and Q components with phase rotation operators in the form of sin θ and cos θ, where θ is an angle whose tangent is the result of dividing the Q by the I frequency offsets.
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