Multiple-path power amplifier
US7560983B1 · kind B1 · utility
2Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2008 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Feb 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7236
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier circuit and method for amplifying a signal efficiently over a plurality of power ranges. The amplifier circuit including a strong amplifier which is efficient over a first power range and a weak amplifier which is efficient over a second power range. An impedance transformation circuit is used for generating a higher potential and providing increased efficiency when the second range of power is present. A circuit biases active the strong amplifier when the first power range of is present and biases active the weak amplifier when the second power range is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.