Method of power amplifier calibration for an envelope tracking system
US9019011B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2012 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Mar 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0222
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for power amplifier (PA) calibration for an envelope tracking system of a wireless device is disclosed. The method involves measuring an output power of a PA that is a part under test (PUT) at a predetermined input power. Another step includes calculating a gain equal to the output power of the PA divided by the predetermined input power. A next step involves calculating a gain correction by subtracting the calculated gain from a desired gain. Other steps include determining an expected supply voltage for the PA at the desired gain using the gain correction applied to a nominal curve of gain versus PA supply voltage, and then storing the expected supply voltage for the PA versus input power in memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.