Optimum impedance system for coupling transceiver to power line carrier network
US4973940A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1987 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Jul 8, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2203/5491
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for efficiently coupling a transceiver to an AC power line transmission system. The preferred embodiment of the coupling system comprises a line coupling network and first and second filter ports. The first filter port is connected to a resonant circuit having bandpass filtering characteristics adapted to the specific needs of the transmitter portion of the transceiver. The second filter port is isolated from the low impedance of the AC power line and is connected to a high quality factor filter having bandpath filtering characteristics adapted to the specific needs of the receiver portion of the transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.