A New Methodology for Optimal Placement of Decoupling Capacitors on Printed Circuit Board

摘要

This report describes a new methodology for the optimal placement of decoupling capacitors on the printed circuit board (PCB). This method searches the optimal position of decoupling capacitor so that the impedance characteristics at the power supply is minimized in the specified frequency range. In this method, the PCB is modeled by the PEEC method to han- Dle the 3-dimensional structures and Krylov-subspace technique Is applied to obtained efficiently the impedance characteristics in The frequency domain.