Method for enhancing power amplifier efficiency and linearity and power amplifier
US12249963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2020 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Nov 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for power amplification uses circuitry including a main amplifier and an auxiliary amplifier that are constructed and operate such that an input is applied to the main and auxiliary amplifiers via an input network. At low power levels, the auxiliary amplifier is off and the main amplifier sees a large impedance. At maximum power level, both the auxiliary and main amplifiers operate at full power and there is a constant phase shift between them. While transitioning from low to maximum power, systematic AM-AM and AM-PM variations generated due to the phase shift provided by the input network, bias differences between the main and auxiliary amplifiers, and nature of the output combiner to compensate device related distortions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.