Method and device for frequency translation in powerline...

Details Method and device for frequency translation in powerline... Method and device for frequency translation in powerline...

2006-01-10

2006-01-10

Vuong, Quochien B. (Department: 2685)

Telecommunications

Having single-channel telephone carrier

Over power line

C455S063100, C455S114200, C455S296000

Reexamination Certificate

active

06985715

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.

REFERENCES:
patent: 5870016 (1999-02-01), Shrestha
patent: 5930729 (1999-07-01), Khamis et al.
patent: 6088570 (2000-07-01), Komara et al.
patent: 6396392 (2002-05-01), Abraham
patent: 6459881 (2002-10-01), Hoder et al.
patent: 6549761 (2003-04-01), Kim

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