Pulse or digital communications – Multilevel – Synchronized
Reexamination Certificate
2007-01-16
2008-12-16
Tran, Khai (Department: 2611)
Pulse or digital communications
Multilevel
Synchronized
C455S323000
Reexamination Certificate
active
07466760
ABSTRACT:
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.
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patent:
Rawlins Gregory S.
Rawlins Michael W.
Sorrells David F.
ParkerVision, Inc.
Sterne Kessler Goldstein & Fox p.l.l.c.
Tran Khai
LandOfFree
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