RF power amplifier device and operating method thereof
US8289084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2011 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | May 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7206
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An RF power amplifier device includes a driver stage amplifier, a first RF amplifier, a second RF amplifier and a DC voltage converter operated by first, second and third external power supply voltages. The output of the driver stage amplifier is supplied to the inputs of the first and second RF amplifiers. An effective device size of the first RF amplifier is set to a device size larger than that of the second RF amplifier. The third external power supply voltage is supplied to the DC voltage converter, so that the DC voltage converter generates a fourth operating power supply voltage corresponding to a low voltage and supplies it to an output terminal of the second RF amplifier. An output terminal of the first RF amplifier can be supplied with the second external power supply voltage without via the DC voltage converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.