Power tracker for multiple transmit signals sent simultaneously
AssigneeQUALCOMM Incorporated
InventorAlexander Dorosenco
Life of this patent
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Abstract
Techniques for generating a power tracking supply voltage for a circuit (e.g., a power amplifier) are disclosed. The circuit may process multiple transmit signals being sent simultaneously on multiple carriers at different frequencies. In one exemplary design, an apparatus includes a power tracker and a power supply generator. The power tracker determines a power tracking signal based on inphase (I) and quadrature (Q) components of a plurality of transmit signals being sent simultaneously. The power supply generator generates a power supply voltage based on the power tracking signal. The apparatus may further include a power amplifier (PA) that amplifies a modulated radio frequency (RF) signal based on the power supply voltage and provides an output RF signal.
Claims24
An apparatus comprising:
- a power tracker configured to determine a power tracking signal based on in-phase (I) and quadrature (Q) components of a plurality of transmit signals being sent simultaneously, the plurality of transmit signals configured for transmission from the apparatus to a base station on a plurality of carriers at different frequencies with carrier aggregation;
- a power supply generator configured to generate a power supply voltage based on the power tracking signal;
- at least one transmit circuit configured to generate a modulated radio frequency (RF) signal based on the I and Q components of the plurality of transmit signals;
- and
- a power amplifier (PA) configured to receive the power supply voltage and the modulated RF signal to produce an output RF signal.
A method comprising:
- determining a power tracking signal based on in-phase (I) and quadrature (Q) components of a plurality of transmit signals being sent simultaneously, the plurality of transmit signals configured for transmission to a base station on a plurality of carriers at different frequencies with carrier aggregation;
- generating a power supply voltage based on the power tracking signal;
- generating a modulated radio frequency (RF) signal based on the I and Q components of the plurality of transmit signals;
- and
- receiving the power supply voltage and the modulated RF signal in a power amplifier (PA), and producing, by the PA, an output RF signal.
An apparatus comprising:
- means for determining a power tracking signal based on in-phase (I) and quadrature (Q) components of a plurality of transmit signals being sent simultaneously, the plurality of transmit signals configured for transmission from the apparatus to a wireless communication system on a plurality of carriers at different frequencies with carrier aggregation;
- means for generating a power supply voltage based on the power tracking signal;
- means for generating a modulated radio frequency (RF) signal based on the I and Q components of the plurality of transmit signals;
- and
- means for amplifying the modulated RF signal using the power supply voltage to produce an output RF signal.
A non-transitory computer-readable medium comprising instructions, that when executed by a processor, cause an apparatus to:
- determine a power tracking signal based on in-phase (I) and quadrature (Q) components of a plurality of transmit signals being sent simultaneously, the plurality of transmit signals configured for transmission from the apparatus to a wireless communication system on a plurality of carriers at different frequencies with carrier aggregation;
- generate a power supply voltage based on the power tracking signal;
- generate a modulated radio frequency (RF) signal based on the I and Q components of the plurality of transmit signals;
- and
- amplify the modulated RF signal using the power supply voltage to produce an output RF signal.
Dependencies are inferred from the claim text.