Wideband Doherty high efficiency power amplifier
US11043920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2019 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Mar 25, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/21139
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Doherty power amplifier having a main power amplification device and an auxiliary power amplification device arranged in parallel with the main power amplification device includes a load modulation circuit having a harmonic injection circuit connected with respective outputs of the main power amplification device and the auxiliary power amplification device. The harmonic injection circuit is arranged to provide a phase shift to simultaneously modulate transfer of second harmonic components generated at the main power amplification device to the auxiliary power amplification device and transfer of second harmonic components generated at the auxiliary power amplification device to the main power amplification device, when the main power amplification device and the auxiliary power amplification device are operated at saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.