Dual mode RF power amplifier
US7612684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2007 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Jun 6, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/602
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Briefly, in accordance with one or more embodiments, a dual mode power amplifier is capable of operating in either linear mode such as class A operation, or a non-linear mode such as class F operation. The power amplifier may be utilized in an RFID interrogator. The power amplifier may be biased to operate in a linear mode if the power amplifier is operating in a higher linearity mode, or may be biased to operate in a non-linear mode if the power amplifier is operating in a higher efficiency, lower power mode. The power amplifier may comprise two or more amplifiers coupled in parallel. A current mirror circuit may turn on more amplifiers if the power amplifier is operating in a higher power mode, and may turn on fewer amplifiers if the power amplifier is operating a lower power mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.