Method and apparatus for linearizing an amplifier
US6242978A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Jun 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3221
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus and method are provided for linearizing a first amplifier having a non-linear signal response characteristic to an applied input signal wherein the amplifier is located between a signal source and a load. This is accomplished by selecting a second amplifier that exhibits a non-linear signal response characteristic to an applied input signal similar to that of the first amplifier. A portion of the input signal obtained from the signal source is then applied to the second amplifier to generate an output signal. A determination is made as to whether there is any difference between the input signal and the output signal and a difference signal is provided in accordance therewith. The difference signal is phase inverted to obtain an inverted difference signal. This inverted difference signal is combined with the input signal to provide a corrected input signal. The corrected input signal is applied to the first amplifier to obtain a corrected output signal therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.