90-degree lumped and distributed Doherty impedance inverter
US11233483B2 · kind B2 · utility
11Cited by
16References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2019 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Aug 2, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for a modified Doherty amplifier operating at gigahertz frequencies are described. The combining of signals from a main amplifier and a peaking amplifier occur prior to impedance matching of the amplifier's output to a load. An integrated distributed inductor may be used in an impedance inverter to combine the signals. A size of the impedance element can be selected by patterning during manufacture to tune the amplifier and to allow power scaling for the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.