Power amplifier pre-distortion
US7746955B2 · kind B2 · utility
7Cited by
9References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 2004 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Aug 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3258
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier pre-distorter is formed by a FIR filter structure that includes an individual look-up table for each filter tap, where each look-up table represents a sampled polynomial in a variable representing signal amplitude. An absolute value block selects, from each filter tap look-up table, a filter coefficient that depends on the amplitude of a corresponding complex signal value to be multiplied by the filter tap. This structure can pre-distort both for amplitude distortion and memory effects in the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.