Transmitter including a composite amplifier
US6940349B2 · kind B2 · utility
81Cited by
13References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 2, 2003 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Jan 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/423
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A composite amplifier includes a main power amplifier (10) and an auxiliary power amplifier (12), which are connected to a load (14) over a Doherty output network (16). A non-linear function (18) and a cross-coupling filter (22) emulate the non-linear behavior of the output current of the auxiliary power amplifier (12) and the resulting emulating signal is subtracted from the input signal to said main amplifier (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.