Electromagnetic Bandgap (EBG) Structures Using Open Stubs to Suppress Power Plane Noise

We have developed a novel electromagnetic bandgap (EBG) structure for suppressing power plane noise that enables unit cell size to be miniaturized by using open stubs as shunt circuits. Since stub length determines the center frequencies of stopbands for this structure, reduced implementation area can be anticipated while maintaining stopbands at lower frequencies. Stopband frequencies were estimated by dispersion analysis based on the Bloch theorem. Highly suppressed noise propagation over the estimated frequencies was validated by fullwave simulation and demonstrated experimentally. a Bottom plane Top plane Patch