Method and apparatus for power line communications

Details Method and apparatus for power line communications Method and apparatus for power line communications

1990-09-21

1993-10-26

Peng, John K.

Communications: electrical

Systems

Selsyn type

340310R, 340310CP, H04M 1104

Patent

active

052570061

ABSTRACT:
A method and apparatus for power line communications which utilizes common mode transmission and reception of communication signals over power lines. The communication signals are sent and received between the power and neutral lines, and the ground line. A common mode choke in the power lines presents a relatively high impedance to the communication signals and prevents them from being shorted to the ground line. The choke is substantially transparent to the power delivery current.

REFERENCES:
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patent: 1672940 (1928-06-01), Honaman
patent: 3973087 (1976-08-01), Fong
patent: 4012733 (1977-03-01), Whyte
patent: 4142178 (1979-02-01), Whyte et al.
patent: 4188619 (1980-02-01), Perkins
patent: 4638299 (1987-01-01), Campbell
patent: 4903006 (1990-02-01), Boomgaard
patent: 5051720 (1991-09-01), Kittirutsunetorn
patent: 5148144 (1992-09-01), Sutterlin et al.
Ivan Smith, "Networking on the Mains Wiring", Communications International, Dec. 1986, p. 43.

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