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US 2013/0252564 A1Published application
Power control techniques for wireless transmitters
AssigneeBroadcom Corporation
InventorsAlireza Zolfaghari, Henrik Tholstrup Jensen, Hooman Darabi
Life of this patent
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Abstract
Various embodiments are disclosed relating to power control techniques for wireless transmitters. In an example embodiment, an apparatus is provided that may include a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode.
Claims19
An apparatus comprising:
- a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode;
- and
- a switch coupled to an output of the DAC to couple the analog amplitude signal output of the DAC to a sampling circuit during a first transmission mode, and to couple the analog power level signal to a driver circuit during a second transmission mode;
- wherein one of the transmission modes includes a transmission mode that employs at least amplitude modulation, and
- wherein another one of the transmission modes includes a transmission mode that employs at least phase modulation or frequency modulation.
2 more elements
An apparatus comprising:
- a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode;
- and
- a circuit, operating in the first transmission mode, receiving a phase modulated signal as a first input, receiving the output from the DAC as a second input, and receiving as a third input an additional power level signal, the circuit adapted to adjust or control the transmission power level during transmission power ramp and during data transmission based on the additional power level signal, the circuit also adapted to output a phase and amplitude modulated signal during data transmission;
- wherein one of the transmission modes includes a transmission mode that employs at least amplitude modulation, and
- wherein another one of the transmission modes includes a transmission mode that employs at least phase modulation or frequency modulation.
2 more elements
An apparatus comprising:
- a digital-to-analog converter (DAC) adapted to convert a digital amplitude signal to an analog amplitude signal during a first transmission mode and adapted to convert a digital power level signal to an analog power level signal during a second transmission mode;
- and
- a sampling circuit coupled to an output of the DAC, the sampling circuit configured to pass the analog power level signal from the DAC during a transmission power ramp during the second transmission mode, and to output a sampled value of the analog power level signal from the sampling circuit during data transmission during the second transmission mode;
- wherein one of the transmission modes includes a transmission mode that employs at least amplitude modulation, and
- wherein another one of the transmission modes includes a transmission mode that employs at least phase modulation or frequency modulation.
2 more elements
Dependencies are inferred from the claim text.