A supply line structure for supplying energy to electrical components of a
motor vehicle, and for the transmission of information between at least a
portion of the components (so-called Powerline Communications). To
improve the channel characteristics of the information transmission via
the supply line structure, it is proposed that the supply lines be
arranged in a star configuration having at least one star point, the or
each star point an impedance which corresponds to the characteristic
impedance of the individual supply line branches running into it. To that
end, it is proposed in particular that at the or each star point, an
additional series resistor, frequency-dependent for frequencies below 100
MHz, be disposed in the incoming supply line branches. The series
resistor is preferably configured as a ferrite sleeve.