Transmitter including a composite amplifier
US6774717B2 · kind B2 · utility
10Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 6, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Jan 6, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- 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). Filters (26, 28) are provided for pre-filtering the amplifier input signals in such a way that the signals meeting at the output of the main amplifier have essentially the same frequency dependence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.