Distortion compensator
US7248643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2003 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Aug 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3294
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A coefficient computing section, for computing a characteristic reverse to an input/output characteristic of the power amplifier, is configured by a fixed coefficient storing section and an error coefficient computing section. The fixed coefficient storing section is previously stored with the characteristic reverse to a pre-measured input/output characteristic. The error coefficient computing section computes an error coefficient between a characteristic stored in the fixed coefficient storing section and a current characteristic of the power amplifier. When the determining section determines that the adjacent-channel leak current power ratio is greater than a predetermined value, an operation halt is instructed to the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.