Electromagnetic modeling of shielding enclosure for chip structures

Abstract

Electromagnetic compatibility (EMC) design for chip structures requires an accurate electromagnetic (EM) modeling and analysis for involved shielding enclosures which are usually made of conductors. The shielding effectiveness of the enclosure can be evaluated through solving for the electric field inside the enclosure. Traditionally, the problem can be solved by the method of moments (MoM) in integral equation approach, but we propose a Nyström scheme to solve it. The Nyström scheme has several merits compared to the MoM, but it has not been used to analyze the EMC problems with very thin conductors. A numerical example is presented to demonstrate the scheme and good results have been obtained.