Automatic optimization of linearity for envelope feedback RF amplifier linearization
US6593812B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 2002 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Apr 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/102
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier configuration and method of amplifying a signal are provided for automatic optimization of linearity of power amplifier input/output characteristics. The amplifier configuration utilizes a feedback loop that includes detecting envelopes of signals that are input and output from a power amplifier. The amplifier configuration includes an offset parameter determined in a second feedback loop that adapts to values for optimizing the linearity of the power amplifier output when input signal amplitudes are within a predetermined range of small signal values, thereby producing a substantially reduced distortion and thus linearized output over the entire input signal amplitude range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.