Systems and methods for vector power amplification
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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.
110 Citations
108 Claims
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1-24. -24. (canceled)
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25. A method of power amplification, comprising:
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receiving a frequency reference signal;
receiving information to be imparted on an output signal;
generating a plurality of control signals from said received information;
generating a plurality of substantially constant envelope signals using said frequency reference signal and said control signals;
power amplifying said substantially constant envelope signals; and
directly combining said power amplified substantially constant envelope signals. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. An apparatus for power amplification, comprising:
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input circuitry that receives information to be imparted on an output signal, and that generates a plurality of control signals from said received information;
vector modulation circuitry, coupled to said input circuitry, that receives said control signals and a frequency reference signal, and that generates a plurality of substantially constant envelope signals using said frequency reference signal and said control signals; and
power amplification circuitry, coupled to said vector modulation circuitry, that power amplifies said substantially constant envelope signals;
wherein outputs of said power amplification circuitry are directly coupled together. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108)
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Specification