Power amplifiers
US5248945A · kind A · utility
2Cited by
3References
8Claims
0Family size
Inventor
Key dates
| Filing date | Jul 6, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Jul 6, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0277
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier, especially for mobile radio systems, achieves high efficiency while maintaining stability by frequency translating the input signal during the power amplification process. Two class C amplifiers (q5,q6) have their outputs coupled together and have their inputs driven differentially. The transistors (q5,q6) are biassed for optimum efficiency and to ensure unsaturated class C operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.