Digital Transmitter
AssigneeQUALCOMM Incorporated
InventorEdward Wai Yeung LIU
Life of this patent
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Abstract
Certain aspects of the present disclosure provide a radio frequency (RF) digital transmitter. An example a RF transmitter includes a multi-order hold digital-to-analog converter (DAC) configured to output a signal with a carrier frequency in a radio frequency (RF) bandwidth, the multi-order hold DAC comprising: a first DAC and a second DAC. The RF transmitter further includes one or more reference voltage generators coupled to the multi-order hold DAC, wherein the one or more reference voltage generators are configured to feed a first reference voltage to the first DAC and feed a second reference voltage to the second DAC, and wherein the one or more reference voltage generators are configured to output the first reference voltage with a first time-varying voltage across a symbol period.
Claims20
A radio frequency (RF) transmitter, comprising:
- a multi-order hold digital-to-analog converter (DAC) configured to output a signal with a carrier frequency in an RF bandwidth, the multi-order hold DAC comprising:
- a first DAC and a second DAC;
- and
- one or more reference voltage generators coupled to the multi-order hold DAC, wherein the one or more reference voltage generators are configured to feed a first reference voltage to the first DAC and feed a second reference voltage to the second DAC, and wherein the one or more reference voltage generators are configured to output the first reference voltage with a first time-varying voltage across a symbol period.
A method of operating a radio frequency (RF) transmitter, comprising:
- providing, to a multi-order hold digital-to-analog converter (DAC), one or more digital signals associated with a signal with a carrier frequency in an RF bandwidth, wherein the multi-order hold DAC comprises a first DAC and a second DAC;
- providing, via one or more reference voltage generators, a first reference voltage to the first DAC and a second reference voltage to the second DAC, wherein the first reference voltage has a first time-varying voltage across a symbol period;
- and
- outputting the signal via the multi-order hold DAC.
Dependencies are inferred from the claim text.