Switchable power amplifier
US6791407B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jan 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0277
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier having a first stage amplifier and a second stage amplifier, each stage of the power amplifier being configured in one of at least two power states based on a desired power output. When the first and second stages are configured in a first state, the power amplifier delivers efficient amplification in a first output power range and, when the first and second stages are configured in a second state, the power amplifier delivers efficient amplification in a second output power range. By configuring each stage in one of at least two states, a high level of power efficiency can be achieved for a broad range of power levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.