High efficiency power amplifier with multiple power modes
US7049886B2 · kind B2 · utility
2Cited by
21References
20Claims
0Family size
Inventors
Key dates
| Filing date | Jan 14, 2005 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Jan 29, 2025 |
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.