Parallel-plate noise suppression using a ground surface perturbation lattice (GSPL) structure

The ground surface perturbation lattice (GSPL) structure is proposed to suppress parallel-plate noises by embedding metal crystals into power/ground planes. The design idea is similar to the photonic crystal power/ground layer (PCPL), consisted in high permittivity dielectric material rods embedded between power and ground layer. In contrast to the PCPL structure, the GSPL can be fabricated without employing high cost material and by using standard PCB/package manufacturing process; therefore it is more suitable for real world applications. In this study, it is discussed how the parameters of the GSPL structure influence the bandgap and how to design the GSPL in order to replace PCPL.