Distortion-compensated amplifier using predistortion technique
US7098734B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Nov 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3224
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A memory effect distortion component compensating unit compensates for a distortion component caused by a memory effect of an amplifier by using a time difference of results from raising an input signal to even power. For example, the amplifier may include a memory effect distortion component compensating unit having an even power raising unit for raising an input signal to even power, an even power raising result delaying unit for delaying a signal of a result of even power raising, an even power raising result time difference detecting unit for detecting a difference between a signal of an even power raising result and a delayed signal, an input signal multiplying unit for multiplying a signal of a detection result by an input signal, a distortion compensation coefficient multiplying unit for multiplying a signal of a multiplication result by a distortion compensation coefficient, and a distortion compensation coefficient multiplication result adding unit for adding an input signal and a signal of a multiplication result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.