Resistive fencing technique for multi-layer PCB power bus radiation mitigation

A resistive mesh fencing technique is developed to mitigate fast switching induced radiation from the power bus in printed circuit boards (PCB). The mitigation effectiveness is studied and quantified using a finite element method (FEM) based full wave solver. When compared with regular via and mesh fencing techniques, the resistive mesh technique proposed here gives higher suppression of the radiated EMI noise by dissipating the currents flowing within the fencing structures.