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US 12,323,107 B2Granted
Systems and methods for providing an envelope tracking supply voltage
AssigneeQorvo US, Inc.
InventorsJames M. Retz, Nadim Khlat
Life of this patent
Estimating the term…
Abstract
Envelope tracking power supply circuitry includes a look up table (LUT) configured to provide a target supply voltage based on a power envelope measurement. The target supply voltage is dynamically adjusted based on a delay between the power envelope of an RF signal and a provided envelope tracking supply voltage. The envelope tracking supply voltage is generated from the adjusted target supply voltage in order to synchronize the envelope tracking supply voltage with the power envelope of the RF signal.
Claims20
A radio frequency (RF) system comprising:
- transceiver circuitry comprising:
- a look-up-table (LUT) configured to provide a target supply voltage based on a power envelope measurement indicative of a power envelope of an RF signal based on a baseband input signal;
- envelope synchronization circuitry configured to adjust the target supply voltage based on a delay between the target supply voltage and the power envelope of the RF signal to provide an adjusted target supply voltage that is synchronized in time with the power envelope of the RF signal;
- and
- digital pre-distortion (DPD) circuitry configured to pre-distort the baseband input signal based on the adjusted target supply voltage to provide a pre-distorted baseband input signal.
2 more elements
A RF system comprising circuitry configured to:
- receive a power envelope measurement, which is indicative of a power envelope of a radio frequency (RF) signal;
- determine a target supply voltage, which is a target voltage for envelope tracking for one or more RF power amplifiers, based on the power envelope measurement;
- adjust the target supply voltage based on a delay between the target supply voltage and the power envelope of the RF signal to provide an adjusted target supply voltage;
- pre-distort an RF input signal based on the adjusted target supply voltage;
- and
- generate an envelope tracking supply voltage based on the adjusted target supply voltage.
3 more elements
Dependencies are inferred from the claim text.