Abstract: Increased chip functionality results in the need for a huge power distribution network. Lower supplyvoltage makes resistive voltage and “Swiss Cheese” effect very critical. In mixed–signal systems, effective noiseisolation between analog and digital circuits is required for correct action. In this paper, a novel power plane has beenproposed. The novel structure is designed based on leaf vein. The theory basis of the design is fractal theory and Murray’s law. The designed power network can produce uniform current distribution and wide electromagnetic bandgap. Our physical structures have greatly improved noise isolation and “swiss cheese” effect.