Communications based adjustments of a parallel amplifier power supply
First Claim
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1. An envelope tracking power supply having an envelope tracking power supply output and comprising:
- a parallel amplifier power supply configured to provide a parallel amplifier power supply signal, which is configured to be adjustable on a communications slot-to-communications slot basis;
a parallel amplifier having a parallel amplifier output, which during envelope tracking, is configured to regulate an envelope power supply voltage based on the parallel amplifier power supply signal; and
switching circuitry having a switching circuitry output, wherein;
an offset capacitive element is directly coupled between the parallel amplifier output and the envelope tracking power supply output; and
a first inductive element is coupled between the switching circuitry output and the envelope tracking power supply output.
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Abstract
A parallel amplifier and a parallel amplifier power supply are disclosed. The parallel amplifier power supply provides a parallel amplifier power supply signal, which is adjustable on a communications slot-to-communications slot basis. During envelope tracking, the parallel amplifier regulates an envelope power supply voltage based on the parallel amplifier power supply signal.
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Citations
27 Claims
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1. An envelope tracking power supply having an envelope tracking power supply output and comprising:
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a parallel amplifier power supply configured to provide a parallel amplifier power supply signal, which is configured to be adjustable on a communications slot-to-communications slot basis; a parallel amplifier having a parallel amplifier output, which during envelope tracking, is configured to regulate an envelope power supply voltage based on the parallel amplifier power supply signal; and switching circuitry having a switching circuitry output, wherein; an offset capacitive element is directly coupled between the parallel amplifier output and the envelope tracking power supply output; and a first inductive element is coupled between the switching circuitry output and the envelope tracking power supply output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for providing and operating an envelope tracking power supply having an envelope tracking power supply output comprising:
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providing a parallel amplifier power supply; using the parallel amplifier power supply to provide a parallel amplifier power supply signal, which is configured to be adjustable on a communications slot-to-communications slot basis; regulating an envelope power supply voltage based on the parallel amplifier power supply signal; providing a parallel amplifier having a parallel amplifier output; and providing switching circuitry having a switching circuitry output, wherein; an offset capacitive element is directly coupled between the parallel amplifier output and the envelope tracking power supply output; and a first inductive element is coupled between the switching circuitry output and the envelope tracking power supply output.
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Specification