Power amplifier circuit for multi-frequencies and multi-modes and method for operating the same
US7876159B2 · kind B2 · utility
70Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2008 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Jan 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/111
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multi-frequency and multi-mode power amplifier is provided. The amplifier has a carrier power amplifier and a peaking power amplifier. The carrier power amplifier receives a first signal and outputs a first amplified signal, in which a first transistor size adjusting unit is included to adjust an equivalent transistor size based on a mode indication signal. The peaking power amplifier receives a second signal and outputs a second amplified signal, in which a second transistor size adjusting unit is included to adjust an equivalent transistor size based on the mode indication signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.