Circuit configuration for the generation of a line terminating impedance
US5473265A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Sep 2, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/586
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit configuration for the generation of a line terminating impedance includes a two-wire to four-wire converter having a transfer function. An analog impedance network has a transfer function and input and output sides being connected through the two-wire to four-wire converter to a line. A digital impedance network has a transfer function and is connected in parallel with the analog impedance network through an analog-digital converter unit and a digital-analog converter unit. A real portion of a sum of the transfer function of the analog impedance network and a product of the transfer functions of the analog-digital converter unit, the digital impedance network and the digital-analog converter unit, multiplied by the transfer function of the two-wire to four-wire converter, is greater than -1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.