Digital predistortion for multiple power amplifiers
US10686415B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 28, 2017 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Dec 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3227
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Various examples are directed to a power amplifier circuit, comprising a digital predistortion circuit, first and second power amplifiers, and a bias feedback circuit. The digital predistortion circuit may be configured to generate a predistorted input signal based at least in part on an input signal. The first power amplifier may be configured to generate a first amplified signal based at least in part on the predistorted input signal. The second power amplifier may be configured to generate a second amplified signal based at least in part on the predistorted input signal. The bias feedback circuit may be configured to adjust at least one of a bias of the first power amplifier or a bias of the second power amplifier to align a first nonlinear behavior of the first power amplifier with a second nonlinear behavior of the second power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.