Doherty amplifier and signal amplification system having the same, method for amplifying signal
US7936213B2 · kind B2 · utility
36Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2009 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Aug 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/447
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Doherty amplifier is provided. The Doherty amplifier includes a first path circuit including a carrier amplifier and a first impedance adjusting circuit connected with the carrier amplifier; and a second path circuit including a peaking amplifier, a second impedance adjusting circuit connected with the peaking amplifier, and a peaking amplifier bias circuit connected with the peaking amplifier. At least one among an impedance of the first impedance adjusting circuit, an impedance of the second impedance adjusting circuit, and a bias of the peaking amplifier bias circuit is adjusted in response to a control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.