Compact low-power class AB amplifier
US7859338B2 · kind B2 · utility
26Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Aug 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45626
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A compact low-power class AB power amplifier design is provided. In an embodiment, the amplifier design eliminates an intermediate stage that couples an input stage and a biasing mesh of the amplifier. In another embodiment, the amplifier design reuses a tail current from the input stage to bias the biasing mesh. Accordingly, a much higher power efficiency can be achieved using the proposed amplifier design compared to conventional class AB amplifiers. Further, the proposed amplifier design is extremely compact and occupies a small silicon area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.