Patent ID: 11956026
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A power line communication (PLC) system for a vehicle, the system comprising:
a plurality of nodes configured to perform a function associated with operating the vehicle, the function being dependent on at least a first node of the nodes transmitting a PLC signal over a plurality of power lines to a second node of the nodes, the power lines being included to connect the nodes with a non-traction battery of the vehicle; and
a filter configured to:
attract a first portion of the PLC signal to a ground of the vehicle prior to the first portion reaching the second node, and
avoid attracting a second portion of the PLC signal to the ground such that the second portion is thereafter free to traverse the power lines to the second node

wherein:
the first portion corresponds with portions of the PLC signal within one or more frequency bands and the second portion corresponds with portions of the signal outside the frequency bands; and
the filter is configured to set an impedance of the filter to a low value for the impedance associated with the first portion and to a high value for the impedance associated with the second portion, the filter determining the impedance from information provided over the power lines by one of the nodes.