Double carrier cancellation in wide band multi-carrier feed forward linearized power amplifier
US6400223B1 · kind B1 · utility
5Cited by
2References
39Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jun 12, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/198
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The quality and efficiency of producing an amplified signal output from a feed-forward amplifier system having reduced distortion and noise is provided. Multiple signal cancellation loops are included in the feed-forward amplifier system so as to more accurately adjust the different frequencies within a frequency band. The multiple signal cancellation loops improve carrier cancellation levels and reduce the size of the error amplifier needed in the distortion cancellation loop and/or multiple distortion cancellation loops to improve distortion cancellation and reduce the size of the main power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.