Power amplification system for low power radio frequency signals
US6342812B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2000 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Jun 27, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0277
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplification system and method for generating low power radio frequency signals. A coupler divides a received signal to be amplified into first and second components. First and second driver stages individually amplify the first and second components. During a low power operation the first and second components of the divided signal are combined in a coupler. In a high power operation, the first and second components are supplied to first and second output amplifiers. The output amplifiers are interconnected so that the amplified signals are combined in the second coupler. The output amplifiers may be output at peak efficiency, using a constant input signal level during the high power mode of operation. During the lower power operation, the driver stages produce the output signal levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.