Electromagnetic susceptibility analysis of high speed circuit inside the shielding enclosure with an aperture

This paper investigates electromagnetic suspectibility characteristics of high speed circuit inside the shielded enclosure with an aperture. Full wave analysis combined with circuit based method is proposed in order to exploit the advantages of these two techniques. The mixed potential electric field integral equation technique via the method of moment (MoM) is adapted to analyze the external part of the problem domain (enclosures and external signal cables) which is illuminated by plane wave EMI. Circuit based SPICE model is used to analyze the suspectibility characteristics of enclosed high speed circuits.