Doherty amplifiers with passive phase compensation circuits
US10630242B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/387
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Doherty amplifier has a first amplifier path that includes a first amplifier, a second amplifier path that includes a second amplifier, a power divider, and a short-circuited stub. The power divider receives an RF signal and divides the RF signal into first and second input signals. The power divider includes first and second power divider outputs that produce the first and second input signals, respectively. The short-circuited stub is coupled between the first power divider output and the first amplifier or between the second power divider output and the second amplifier. The first and second amplifier paths are characterized by first and second frequency-dependent insertion phases, respectively. A slope of the first or second frequency-dependent insertion phase is altered by the short-circuited stub. The power divider produces the first and second input signals with a quadrature phase shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.