Dc-dc converter for envelope tracking
AssigneeIntel Mobile Communications GmbH
InventorFranz Kuttner
Life of this patent
Estimating the term…
Abstract
Embodiments provide a DC-DC converter (DC-DC=direct current to direct current) for envelope tracking. The DC-DC converter includes a digital control stage and a driving stage. The digital control stage is configured to provide a digital control signal based on digital information describing an amplitude of a digital baseband transmit signal. The driving stage is configured to provide a supply voltage for an RF amplifier (RF=radio frequency) based on the digital control signal.
Claims22
A DC-DC converter for envelope tracking, comprising:
- a digital control stage comprising a digital modulator that is configured to generate a digital control signal in response to receiving digital information describing an amplitude of a digital baseband transmit signal and a voltage reading from a battery voltage;
- and
- a driving stage configured to provide a supply voltage for an RF amplifier based on the digital control signal.
A DC-DC converter for envelope tracking, comprising:
- a digital modulator configured to receive digital information that describes an amplitude of a digital baseband transmit signal from a transmitter and a voltage reading from a DC power supply, and generate a modulated digital control signal as a function of the digital information and the voltage reading;
- an inverter configured to provide a first voltage in response to a first state of the modulated digital control signal and to provide a second voltage in response to a second state of the modulated digital control signal as a supply voltage for an RF amplifier.
A method for envelope tracking, comprising:
- receiving, via a transmitter, digital information that indicates an amplitude of a digital baseband transmit signal of the transmitter and a voltage reading from a power supply;
- generating, via a digital modulator, a digital control signal based on the digital information and the voltage reading;
- and
- providing a supply voltage for an RF amplifier based on the digital control signal.
A method for manufacturing a DC-DC converter for envelope tracking, comprising:
- providing a digital control stage configured to generate a digital control signal from a digital information received from a digital transmitter that describes an amplitude of a digital baseband transmit signal of the digital transmitter and from a voltage reading of a battery voltage;
- and
- providing a driving stage configured to generate a supply voltage for a RF amplifier based on the digital control signal.
Dependencies are inferred from the claim text.