Method and device for modeling AM-AM and AM-PM characteristics of an amplifier, and corresponding predistortion method
US5929703A · kind A · utility
32Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Aug 6, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0016
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of modeling the AM--AM and AM-PM characteristics of an amplifier includes the step of transmitting a reference signal to the amplifier. The response of the amplifier to the reference signal is digitized to produce two sets of AM--AM and AM-PM reference samples, respectively. Two series of polynomials respectively representative of the AM--AM and the AM-PM characteristics are determined from the samples. The determination of each polynomial allows for the second derivative of the polynomial and for the distances between the samples and points on the curve defined by the polynomial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.