Apparatus for coupling radio-frequency signals to and from a cab

Details Apparatus for coupling radio-frequency signals to and from a cab Apparatus for coupling radio-frequency signals to and from a cab

1997-03-06

1999-01-26

Tong, Nina

Communications: electrical

Systems

Selsyn type

34031005, 34031006, 455 33, 375259, H04M 1104

Patent

active

058642846

ABSTRACT:
A coupling system for transferring a RF signal to and from a high-voltage cable (302) of a power distribution system is described. In one embodiment the coupling system uses a lightning arrester (314) as an element for coupling a RF signal from a RF modem (420) to and from the high-voltage cable. An impedance element of the coupling system is a section of a grounding cable (309) modified with one or more ferrite cores (430) as a means for adjusting the value of the impedance.

REFERENCES:
patent: 4142178 (1979-02-01), Whyte et al.
patent: 4361202 (1982-11-01), Minovitch
patent: 4471399 (1984-09-01), Udren
patent: 4668934 (1987-05-01), Shuey
patent: 4851832 (1989-07-01), Graf

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