Distortion compensation device for use in high-frequency power amplifier
US8175551B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2006 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jun 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3247
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A non-linear distortion signal contained in output signal components from a high-frequency power amplifier is detected, while a non-linear distortion signal is generated from a high-frequency signal to be amplified. Correlation between this non-linear distortion signal and the detected non-linear distortion signal is determined, and a control variable is calculated based on the signal thus obtained. The obtained control variable is multiplied by the generated non-linear distortion signal to generate a distortion compensation signal, which is added to the signal to be amplified. This provides a distortion compensation device capable of automatically maintaining optimum distortion compensation characteristics and rapidly achieving desirable distortion compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.