Radio-frequency Amplifier with Supply and Load Modulation
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
May 23, 2024
filing date -
May 23, 2024
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Abstract
An electronic device may include wireless circuitry. The wireless circuitry may include a radio-frequency amplifier having a data input configured to receive a radio-frequency signal generated from a baseband signal, supply modulation blocks configured to output a power supply voltage, derived from the baseband signal, for powering the radio-frequency amplifier, and load modulation blocks configured to output a load control signal, derived from the baseband signal and a bandwidth reduced envelope signal output from the supply modulation circuitry, for tuning an adjustable load component of the radio-frequency amplifier. The supply modulation blocks can include a full envelope generator, a bandwidth reduction block for outputting the bandwidth reduced envelope signal, an envelope shaping block, and an envelope tracker. The load modulation blocks can include an inverse amplifier gain model and a load shaping block.
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