Method for estimating transmission properties of a telecommunications transmission line
US8781078B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2009 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Nov 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/466
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Transmission properties of a telecommunications transmission line may be estimated with improved accuracy by numerical solution for Γ of Zin·jω^C=Γcoth(Γ). At least one curve is adapted to Γ solutions already obtained and a starting point for numerical solution is selected in dependence of the at least one curve and in dependence of an already obtained solution close in frequency. In a first frequency range, starting points for numerical solution may be calculated from a biquadratic equation. In a second frequency range, a line in the complex plane may be adapted to solutions already obtained and new starting points selected in dependence of the line and in dependence of the previous solution. In a third frequency range, two lines in the frequency plane may be adapted to solutions already obtained and new starting points selected in dependence of the lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.