Pulse or digital communications – Transmitters
Reexamination Certificate
2008-06-26
2011-11-29
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Transmitters
C375S219000, C375S135000, C375S146000, C375S297000, C455S127100, C455S126000
Reexamination Certificate
active
08068556
ABSTRACT:
A flexible, reconfigurable, power efficient transmitter device and method is provided. In one embodiment, the method includes receiving outbound data and determining a mode of operation. When operating in a first mode the method may include modulation mapping the outbound data according a modulation scheme to provide first modulation mapped digital data, converting the first modulation mapped digital data to an analog signal that comprises an intermediate frequency (IF) analog signal, upconverting the IF analog signal to produce a first modulated radio frequency (RF) signal based on a local oscillator signal, amplifying the first RF modulated signal to produce a first RF output signal, and outputting the first RF output signal via an isolator. In a second mode of operation method may include modulation mapping the outbound data according a modulation scheme to provide second modulation mapped digital data, converting the second modulation mapped digital data to a first digital baseband signal, conditioning the first digital baseband signal to provide a first analog baseband signal, modulating one or more carriers with the first analog baseband signal to produce a second modulated RF signal based on a local oscillator signal, amplifying the second RF modulated signal to produce a second RF output signal, and outputting the second RF output signal via the isolator. The digital baseband signal may comprise an in-phase (I) digital baseband signal and a quadrature (Q) baseband signal.
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Bishop James W.
Bundick Steven N.
Newman David Childress
Zaki Nazrul H. Mohd
Barnes Mel
Capital Legal Group, LLC
Liu Shuwang
LJT & Associates, Inc.
Yu Lihong
LandOfFree
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