Method and apparatus for attaining higher amplifier efficiencies at lower power levels
US6625430B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 5, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Oct 5, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/045
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method and apparatus for providing a radio frequency output to promote higher amplifier efficiencies. In one embodiment, the apparatus includes a driver and a switch that alternately connects first and second circuit paths to the driver and an antenna. A power amplifier having a first bias lead lies in the second circuit path. When low power is required, the switch connects the first circuit path to the antenna, and disconnects the first bias lead from a bias. When high power is required, the switch disconnects the first circuit path from the antenna, and connects the second circuit path and the first bias lead to the antenna and the bias, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.