Pulse or digital communications – Transmitters – Quadrature amplitude modulation
Reexamination Certificate
2004-09-30
2008-10-28
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Transmitters
Quadrature amplitude modulation
C375S299000, C375S300000, C375S317000
Reexamination Certificate
active
07443924
ABSTRACT:
In a communication device, the LO leakage and opposite side band signals are measured at an output signal. Input processing signals to a modulator are adjusted in response to the measured values to minimize the LO leakage and maximize side band suppression.
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Dale Mark
Thesling William H.
Fan Chieh M.
Ghulamali Qutbuddin
Townsend and Townsend / and Crew LLP
ViaSat Inc.
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