Apparatus for coupling radio-frequency signals to and from a cable of a power distribution network

摘要

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.