An electromagnetic bandgap (EBG) structure is proposed to suppress the simultaneous switching noise (SSN) from 0.45 GHz to 5.3 GHz with an averaged suppression level of −66.4 dB. The design is based on the inductance enhancement by using meander lines to bridge slotted metal patches embedded into the power plane. Numerical simulation and experimental measurement are both used in the study for mutual verification. Compared to the conventional L-bridged EBG structure, the novel design increases the bandwidth by 15% and reduces the lower frequency by 150 MHz. A better omnidirectional SSN suppression is also achieved. For high-speed digital applications, the signal integrity is analyzed and improved.
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