Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2007-01-29
2008-08-19
Nguyen, Khanh V (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S002000
Reexamination Certificate
active
07414469
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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Rawlins Gregory S.
Rawlins Michael W.
Sorrells David F
Nguyen Khanh V
ParkerVision, Inc.
Sterne Kessler Goldstein & Fox PLLC
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