Radiated emission of various PDN designs

Several solutions to decrease the propagation of simultaneous switching noise (SSN) in power distribution network (PDN) were evaluated for boards with active components. Radiated emission of the boards using power track, 2 cell symmetric power island (or one-cell Electromagentic Band Gap (EBG)) with square patches or asymmetric EBG was measured using a Reverberation Chamber, and the results were compared to a standard power plane design. The effect of the various EBG structures on the noise in PDN, and the radiated emission due to printed circuit boards was investigated.