Fast amplitude based pre-distortion calibration for a radio frequency power amplifier
US8913969B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2010 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Feb 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0425
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to amplitude based pre-distortion calibration of an RF communications terminal, such as a cell phone, by transmitting a first standard RF transmit burst from the RF communications terminal to an RF test instrument, which assimilates the first standard RF transmit burst. A calibration control system extracts information regarding the first standard RF transmit burst from the RF test instrument; determines amplitude based distortion of the RF communications terminal using the extracted information; determines amplitude based pre-distortion calibration information using the determined amplitude based distortion; and calibrates the RF communications terminal using the amplitude based pre-distortion calibration information. By using a single-shot transmit burst, calibration times may be minimized. To calibrate the RF communications terminal at multiple transmit frequencies, multiple single-shot transmit bursts may be used, such that each single-shot transmit burst is at a different calibration frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.