Multi-mode power amplifier
US8824991B2 · kind B2 · utility
12Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2013 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Dec 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A multi-mode power amplifier includes a high-power mode amplifier circuit, a mid-power mode amplifier circuit, and a low power amplifier circuit, where the low-power mode amplifier circuit comprises a plurality of independently selectable power cell/amplifier branches. The multi-mode power amplifiers selectively enable or disable amplifier branches to provide multiple levels of amplification. Selectively enabling certain of a plurality of split collector amplifier branches provides multiple low power and ultra-low power amplifier modes without the impedance mismatch or board layout problems associated with an RF switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.