RF power transmission, modulation, and amplification, including power control of multiple input single output (MISO) amplifiers
First Claim
1. A method of power amplification, comprising:
- receiving a frequency reference signal;
receiving information having a plurality of components;
determining one or more phase shift angles between said plurality of components based upon magnitudes of said plurality of components;
generating a plurality of control signals using said one or more phase shift angles;
generating a plurality of substantially constant envelope signals using said frequency reference signal and said control signals;
amplifying and combining said substantially constant envelope signals to create a desired output signal; and
controlling power of said desired output signal by controlling said one or more phase shift angles between said plurality of components.
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Accused Products
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
30 Claims
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1. A method of power amplification, comprising:
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receiving a frequency reference signal; receiving information having a plurality of components; determining one or more phase shift angles between said plurality of components based upon magnitudes of said plurality of components; generating a plurality of control signals using said one or more phase shift angles; generating a plurality of substantially constant envelope signals using said frequency reference signal and said control signals; amplifying and combining said substantially constant envelope signals to create a desired output signal; and controlling power of said desired output signal by controlling said one or more phase shift angles between said plurality of components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for power amplification, comprising:
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circuitry operable to receive a frequency reference signal; circuitry operable to receive information having a plurality of components; circuitry operable to determine one or more phase shift angles between said plurality of components based upon magnitudes of the plurality of components; circuitry operable to generate a plurality of control signals using said one or more phase shift angles; and circuitry operable to generate a plurality of substantially constant envelope signals using said frequency reference signal and said control signals; circuitry operable to amplify and to combine said substantially constant envelope signals to create a desired output signal, wherein power of said desired output signal is controlled by controlling said one or more phase shift angles between said plurality of components. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for power amplification, comprising:
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a module configured to receive a frequency reference signal; a module configured to receive information having a plurality of components; a module configured to determine one or more phase shift angles between said plurality of components based upon magnitudes of the plurality of components; a module configured to generate a plurality of control signals using said one or more phase shift angles; and a module configured to generate a plurality of substantially constant envelope signals using said frequency reference signal and said control signals; an amplifier operable to amplify and to combine said substantially constant envelope signals to create a desired output signal, wherein power of said desired output signal is controlled by controlling said one or more phase shift angles between said plurality of components. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification