High efficiency power amplifier with multiple power modes
US6972618B2 · kind B2 · utility
6Cited by
20References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2004 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Nov 18, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7239
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multiple power mode amplifier provides a low and a high power mode without using switches. This amplifier may be used in RF applications such as mobile telephones. In the low power mode, the power consumption of the amplifier is reduced, which will increase operation time, especially important for battery-operated devices. In one implementation, the amplifier includes a number of impedance matching network units (130, 140, 150, and 160), impedance transformer (170), and a power stage (120).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.