Combiner-less multiple input single output (MISO) amplification with blended control
First Claim
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1. An apparatus comprising:
- circuitry configured to generate a plurality of substantially constant envelope signals using a plurality of control signals and a frequency reference signal; and
a multiple input single output (MISO) node configured to combine said plurality of substantially constant envelope signals to generate a desired output signal, wherein said MISO node is configured to be controlled by an outphasing angle between said plurality of substantially constant envelope signals, one or more bias control signals of said MISO node, one or more amplitude control signals of said MISO node, one or more power supply control signals of said MISO node, one or more impedance control signals of said MISO node, or a combination thereof.
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Abstract
Multiple-Input-Single-Output (MISO) amplification and associated VPA control algorithms are provided herein. According to embodiments of the present invention, MISO amplifiers driven by VPA control algorithms outperform conventional outphasing amplifiers, including cascades of separate branch amplifiers using conventional power combiner technologies. MISO amplifiers can be operated at enhanced efficiencies over the entire output power dynamic range by blending the control of the power source, source impedances, bias levels, outphasing, and branch amplitudes. These blending constituents are combined to provide an optimized transfer characteristic function.
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19 Claims
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1. An apparatus comprising:
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circuitry configured to generate a plurality of substantially constant envelope signals using a plurality of control signals and a frequency reference signal; and a multiple input single output (MISO) node configured to combine said plurality of substantially constant envelope signals to generate a desired output signal, wherein said MISO node is configured to be controlled by an outphasing angle between said plurality of substantially constant envelope signals, one or more bias control signals of said MISO node, one or more amplitude control signals of said MISO node, one or more power supply control signals of said MISO node, one or more impedance control signals of said MISO node, or a combination thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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generating a plurality of substantially constant envelope signals using a plurality of control signals and a frequency reference signal; combining said plurality of substantially constant envelope signals at a multiple input single output (MISO) node to generate a desired output signal; and controlling said MISO node by an outphasing angle between said plurality of substantially constant envelope signals, one or more bias control signals of said MISO node, one or more amplitude control signals of said MISO node, one or more power supply control signals of said MISO node, one or more impedance control signals of said MISO node, or a combination thereof. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification