Method and apparatus for wideband predistortion linearization
US6075411A · kind A · utility
84Cited by
11References
20Claims
0Family size
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Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Dec 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/102
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A predistortion signal is generated which compensates for third order and higher order intermodulation distortion over a wideband. The predistortion signal is applied to an input radio frequency signal, for example a multi-tone radio frequency signal. The predistortion signal is a low order polynomial having adjustable coefficients. The predistortion signal can compensate for intermodulation products produced a nonlinear amplifier, and the polynomial coefficients can be adjusted based on the difference between the amplifier output and the input radio frequency signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.