Effectively restrain the synchronous switch noise through attaching EBG and capacitor

With the decrease of the digital circuit noise tolerance and the timing margins tolerance. The simultaneous switching noise (SSN) of Power ground plane become a major bottleneck for high speed design. The existing method of suppressing SSN exist their short comings. In this paper, the new method combined electromagnetic band gap(EBG)with decoupling capacitors is put forwarded to use design to suppress SSN, the software simulation results show that the method is effective.