Reduction of PDN induced coupling into signal lines using PTL power distribution

Transmission lines carrying high speed I/O signals can couple significant amount of electromagnetic energy to power distribution network (PDN) which can then adversely affect signal and power integrity of the entire electrical system. Similarly the reverse is also true. In this paper we present three printed circuit board designs with different power distribution topologies and show through measurement that a previously proposed PDN design based on Power Transmission Line (PTL) concept is less susceptible to coupling from signal lines.