Radio frequency signal coupler, coupling system and method
US7535685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2006 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Dec 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5483
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) signal coupling system, comprising a shunt device and a coupling unit for cooperative engagement with a MV power network and an RF modem. The shunt device has a high voltage terminal connected to an electrical cable of the power network and a low voltage terminal. The coupling unit comprises a signal lead connected to the low voltage terminal of the shunt device, a ground lead connected to earth ground, a coupling transformer and an impedance matching and protection circuitry. The coupling transformer comprises a ferrite ring, a multiple turn primary winding having a first end and a second end, the first end being connected to the signal lead and the second end being connected to the ground lead, and a multiple turn secondary winding having two terminals connected to the impedance matching and protection circuitry for providing the RF signal to the RF modem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.