System and method for supplying power to a power amplifer
AssigneeQuantance, Inc.
InventorsSerge Francois Drogi, Marcus Charles Mertsching, Luigi Panseri
Life of this patent
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Abstract
A power supply for a radio frequency (RF) power amplifier that amplifies an RF input signal into an RF output signal and a method of operation in the power supply. The power supply comprises a first power converter to convert an input voltage to the power supply into a first supply voltage of the RF power amplifier. The power supply comprises a second power converter to receive the input voltage and the first supply voltage and to selectively convert either the input voltage or the first supply voltage into at least a portion of a second supply voltage of the RF power amplifier.
Claims20
A radio frequency power amplifier system comprising:
- a power amplifier configured to receive a radio frequency input signal and to provide an amplified radio frequency output signal, the power amplifier including a first stage and a second stage;
- a first power converter configured to receive a first input voltage and generate a first output voltage, the first power converter being configured to provide the first output voltage to the first stage and to the second stage responsive to a first mode of operation;
- and
- a second power converter configured to receive a second input voltage and generate a second output voltage, the second power converter being configured to provide at least a portion of the second output voltage to the second stage responsive to a second mode of operation.
A method of providing power to a radio frequency power amplifier, the method comprising:
- converting a first input voltage to a first output voltage;
- providing the first output voltage to a first stage of the radio frequency power amplifier and to a second stage of the radio frequency power amplifier in a first mode of operation;
- converting a second input voltage to a second output voltage in a second mode of operation;
- and
- providing, in the second mode of operation, the first output voltage to the first stage of the radio frequency power amplifier and at least a portion of the second output voltage to the second stage of the radio frequency power amplifier.
A method of providing power to a power amplifier, the method comprising:
- detecting an amplitude of an input signal;
- comparing the amplitude to a signal threshold;
- selectively providing at least one of a first converted voltage and a second converted voltage to the power amplifier in response to the amplitude being lower than the signal threshold;
- and
- combining the second converted voltage and a third converted voltage to provide a combined voltage to the power amplifier in response to the amplitude being higher than the signal threshold.
Dependencies are inferred from the claim text.