Mitigation of simultaneous switching noise in high speed circuit using electromagnetic bandgap structures with interdigial meander bridge

An interdigital meander-bridge electromagnetic bandgap power/ground planes for suppressing simultaneous switching noise is presented. The effective suppressing bandwidth of interdigital meander-bridge structure is from 880 MHz to 4.91GHz. Although it improves good power integrity, the pads between integrated squares and meander-bridge will destroy signal integrity problem. The performance is determined by maximum eye open and maximum eye width. The results show the present structure is superior to other structure for suppressing simultaneous switching noise and provide a better signal integrity.