Radio-frequency power amplifiers driven by boost converter
First Claim
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1. A power amplification system comprising:
- a supply system configured to provide a high-voltage supply signal based on a battery voltage in an average power tracking mode;
a power amplifier configured to operate in the average power tracking mode to thereby receive the high-voltage supply signal and amplify a signal; and
an output path configured to route the amplified signal to a filter having an impedance, the high-voltage supply signal and the power amplifier configured such that an impedance of the power amplifier substantially matches the impedance of the filter, the output path substantially free of an output matching network between the power amplifier and the filter.
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Abstract
Radio-frequency (RF) power amplifiers driven by boost converter. In some embodiments, a power amplification system can include a supply system configured to provide a high-voltage (HV) supply signal based on a battery voltage, and a power amplifier (PA) configured to receive the HV supply signal and amplify an RF signal. The power amplification system can further include an output path configured to route the amplified RF signal to a filter. Such an output path can be substantially free of either or both of an impedance transformation circuit and a band selection switch.
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Citations
16 Claims
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1. A power amplification system comprising:
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a supply system configured to provide a high-voltage supply signal based on a battery voltage in an average power tracking mode; a power amplifier configured to operate in the average power tracking mode to thereby receive the high-voltage supply signal and amplify a signal; and an output path configured to route the amplified signal to a filter having an impedance, the high-voltage supply signal and the power amplifier configured such that an impedance of the power amplifier substantially matches the impedance of the filter, the output path substantially free of an output matching network between the power amplifier and the filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radio-frequency module comprising:
- a packaging substrate configured to receive a plurality of components; and
a power amplification system implemented on the packaging substrate, the power amplification system including a supply system configured to provide a high-voltage supply signal based on a battery voltage in an average power tracking mode, the power amplification system further including a plurality of power amplifiers, each power amplifier configured to operate in the average power tracking mode to thereby receive the high-voltage supply signal and amplify a signal, the power amplification system further including an output path configured to route the amplified signal from the corresponding power amplifier to a corresponding filter having an impedance, the high-voltage supply signal and the power amplifier configured such that an impedance of the power amplifier substantially matches the impedance of the filter wherein each output path is substantially free of an impedance transformation circuit between the corresponding power amplifier and output filter, the output path substantially free of an output matching network between the power amplifier and the filter. - View Dependent Claims (13, 14, 15)
- a packaging substrate configured to receive a plurality of components; and
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16. A wireless device comprising:
- a transceiver configured to generate a signal;
a front-end module in communication with the transceiver, and including a power amplification system having a supply system configured to provide a high-voltage supply signal based on a battery voltage in an average power tracking mode, the power amplification system further including a plurality of power amplifiers, each power amplifier configured to operate in the average power tracking mode to thereby receive the high-voltage supply signal and amplify the signal, the power amplification system further including an output path configured to route the amplified signal from the corresponding power amplifier to a corresponding filter having an impedance, the high-voltage supply signal and the power amplifier configured such that an impedance of the power amplifier substantially matches the impedance of the filter, the output path substantially free of an output matching network between the power amplifier and the filter; and
an antenna in communication with the front-end module, and configured to facilitate transmission of the amplified signal.
- a transceiver configured to generate a signal;
Specification