Partial EBG power distribution network using remants of signal layers in multi-layer PCB

Design and efficiency verification of a partial electromagnetic band-gap (EBG) power distribution network (PDN) using remnants of the signal layer in a multilayer printed circuit board (PCB) are presented. A partial EBG PDN is embodied in a conventional four-layer stack-up PCB without any additional layer, and the efficiency of the proposed method on signal transmission quality improvement and power plane noise mitigation is investigated experimentally. It is shown that the proposed method provides an improved signal return current path, resulting in better signal transmission quality and higher signal noise margin than conventional methods. In addition, the method enables lower power noise generation and better noise isolation.