Feed forward amplifier
US6037837A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1999 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Feb 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3223
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A feed forward amplifier comprises a main amplifier 10 composed of a plurality of power amplifiers 8 and 9 combined in parallel. In addition to the plurality of power amplifiers, this feed forward amplifier includes a distortion detecting amplifier 25 for detecting the distortion components, having a distortion characteristic in a predetermined relationship with the distortion characteristic of the main amplifier. It also omits a distortion detecting power combiner 23 otherwise located after a main amplifier 10 and locates a delay circuit 21 before the main amplifier 10 to reduce losses occurring after the main amplifier 10 to improve the efficiency of the entire feed forward amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.