Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
First Claim
1. A method for phase and amplitude error correction in a power amplifier, comprising:
- measuring phase and amplitude error differential signals using any structure depicted in FIGS. 59A-D and FIGS. 63A-D; and
adjusting phase and amplitude of constant envelope signals of the power amplifier according to said error differential signals.
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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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Citations
1 Claim
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1. A method for phase and amplitude error correction in a power amplifier, comprising:
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measuring phase and amplitude error differential signals using any structure depicted in FIGS. 59A-D andFIGS. 63A-D ; andadjusting phase and amplitude of constant envelope signals of the power amplifier according to said error differential signals.
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Specification