Method and device for frequency translation in powerline communications
US6985715B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2003 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Aug 14, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0292
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for transmitting and receiving RF signals for broadband communications using power lines as communication medium. A super-heterodyne structure is used to translate the signals from one frequency to another so as to avoid interference sources, which may corrupt the communication signals. In the heterodyne structure, a plurality of local oscillators are used to mix the local oscillator signals with the communication signals for frequency translation. A plurality of frequency filters are used to filtered out unwanted signals. The communication signals are imparted onto or received from the power lines via couplers operatively connected to modems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.