Adaptive linearization of power amplifiers
US6246286A · kind A · utility
206Cited by
15References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Oct 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3241
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus adaptively compensates for nonlinearities of a power amplifier by measuring a distortion characteristic across the power amplifier during amplification of a distortion detection signal. The distortion detection signal has a well-defined input power versus time relationship, such as ramp-up signal or ramp-down signal. Due to this well-defined relationship, the distortion characteristic can be calculated as a function of the input power level. This calculated function is then utilized to update a predistortion lookup table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.