Planar EBG structure for broadband suppression of simultaneous switching noise

Abstract

Simultaneous switching noise is the main reason that greatly affects power integrity of power distribution network. In order to suppress simultaneous switching noise in low frequency range and expand the stop-band bandwidth, we propose a new type planar electromagnetic band-gap (EBG) structure which is achieved by increasing the connection bridge between the patches. It can be directly embedded in high-speed circuit PCB. When the suppression depth is −30dB, the stop-band is 0.29–7.21GHz. The proposed electromagnetic band-gap structure can effectively decrease the lower cutoff frequency and expand the stop-band bandwidth which is confirmed by simulation.