Method for linearsing high-frequency amplifier
US6646506B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Jul 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3241
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A predistorter is connected upstream of a high-frequency amplifier to be linearized. A predistortion factor is adaptively modified in the predistorter in such a way as to compensate non-linearities of the amplifier as well as possible. The quotient of the output signal of the high-frequency amplifier and the input signal of the predistorter is produced first. An average amplification is then determined based on the signal quotient. A correction term is produced for the predistortion factor, this correction term being dependent on the extent of the deviation of the average amplification from a set value. The predistortion factor is adaptively modified in such a way as to minimize the correction term.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.