Power amplifier having a nonlinear output capacitance equalization
US8629725B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2011 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Jan 9, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/387
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Power amplifier (PA), regardless of the process used for the manufacturing of its devices, suffers from a nonlinear output capacitance that has significant impact on various aspects of the PA performance. This output capacitance is dependent on the large output voltage swing. Accordingly a compensation capacitance is added at the output of the PA that has a behavior that is inverse respective of the output voltage of that of the output capacitance of the PA. Connecting the compensation capacitor in parallel to the PA output capacitance, results in a total capacitance that is the sum of the output capacitance and its compensation capacitance. The total output capacitance is therefore essentially stable throughout the output voltage swing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.