Method for correcting frequency-varying nonlinear errors and digital correction circuit implementing same
US6104239A · kind A · utility
12Cited by
9References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3247
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for correcting errors introduced by a non-linear amplifying device to an input signal inputted to the device. A Look-Up Table (LUT) stores error correction values indexed against input signal amplitude values and input signal frequency values. The amplitude and frequency of an input signal to be inputted to the non-linear amplifying device are measured, and stored error correction values corresponding to the measured amplitude and frequency are retrieved from the LUT and used to modify the input signal accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.