A SELF-SIMILAR FRACTAL ELECTROMAGNETIC BAND-GAP STRUCTURE IN THE POWER PLANE WITH BROADBAND SUPPRESSION OF GROUND BOUNCE NOISE

摘要

In this paper, a self-similar fractal electromagnetic bandgap structure with "L-Cross" slots is proposed and designed in the power plane to suppress the ground bounce noise in high-speed circuits. Both the simulation and the measured results with good agreement with each other show a low onset band stop frequency of 500 MHz and a broad stop band of about 4 GHz. When combining the structure with decoupling capacitor walls at the boundary of the power plane, a broadband GBN suppression from DC to 6 GHz can be obtained.