Arbitrary waveform predistortion table generation
US7330073B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2005 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Feb 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Predistortion that will compensate for distortion introduced by a power amplifier circuit is determined by applying a time-varying reference signal to the power amplifier circuit, wherein at each moment the time-varying reference signal has a reference amplitude and a reference phase. A corresponding output signal supplied by the power amplifier circuit is measured, wherein at each moment the output signal has a measured amplitude and a measured phase. Amplitude predistortion is determined by comparing the reference amplitude with the measured amplitude, and phase predistortion is determined by comparing the reference phase with the measured phase. A relationship between the phase predistortion and the reference amplitude is determined such that, for any value of the reference amplitude, a corresponding value of the phase predistortion is identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.