Monolithically integratable circuit for measuring longitudinal and transverse currents in a two-wire transmission line
US4782507A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1986 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Mar 20, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/2272
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit, which may be monolithically integrated, for measuring longitudinal and transverse currents in a two-wire transmission line, includes first and second current mirror circuits of a first type, each having an input branch and first and second output branches. The measuring circuit also includes third, fourth and fifth current mirror circuits, each having an input branch and an output branch, and first and second currents mirror circuits of a second type, each having first and second input branches and first and second output branches. The input branches of the first and second current mirror circuits of the first type and the first input branches of the first and second current mirror circuits of the second type are used as input terminals for coupling to the line. The first and second current mirror circuits of the first type are both connected to the third current mirror circuit and are respectively connected to the first and second current mirror circuits of the second type, which are both connected to the fourth current mirror circuit. The second current mirror circuit of the second type is connected to the fifth current mirror circuit whose output the first output of t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.