Tricyclic nested electromagnetic bandgap structure characterized with broad stopband bandwidth and deep noise suppression

摘要

A novel tricyclic nested electromagnetic bandgap (TN-EBG) structure has been proposed to restrain the simultaneous switching noise (SSN) in high-speed digital systems. The presented TN-EBG structure was fabricated and measured based on the simulated performance of the configuration. It is found that the measured S-parameters are in good agreement with the simulated ones. Also, it is observed that an ultra-wide bandgap has been achieved, which almost ranges from 1 to 27 GHz with the noise suppression at -50 dB. Especially for the stopband width spanning from 1.1 to 21.6 GHz, the suppression depth level reaches up to-60 dB. The derived electric field distribution images have clearly exhibited the operation mechanism of the TN-EBG structure for SSN mitigation within the different frequency regions.