Back to results
US 8,410,849 B2Granted
Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments
AssigneeParkerVision, Inc.
InventorsDavid F. Sorrells, Gregory S. Rawlins
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention enable a blended control approach to generate a desired output waveform in an outphasing-based system. Embodiments of blended control according to the present invention combine outphasing with bias and/or amplitude control to yield an accurate, practical, and producible system with substantially comparable performance to that of a theoretical ideal outphasing system, but without the isolation and accuracy requirements of outphasing alone.
Claims18
A method for control in a power amplifier, comprising:
- partitioning a waveform constellation space into a plurality of regions, each region associated with one or more control functions of the power amplifier;
- determining a region of operation of the power amplifier from the plurality of regions, based on an instantaneous output power level of a desired output waveform of the power amplifier;
- and
- applying the one or more control functions associated with the region of operation of the power amplifier to enhance output power accuracy of the power amplifier for the instantaneous output power level.
1 more element
Dependencies are inferred from the claim text.