Adaptive predistortion technique for linearizing a power amplifier for digital data systems
US4291277A · kind A · utility
134Cited by
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17Claims
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Key dates
| Filing date | May 16, 1979 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | May 16, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Distortion introduced into a multiamplitude signal format by a high power microwave amplifier is compensated by a system which adapts itself to non-linearities present in the amplifier and predistorts the input signals before they are subjected to the non-linearities created by the amplifier. The degree of predistortion is non-fixed and varies or is updated as the non-linear conversion characteristics of the amplifier change with time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.