Author(s)

D. Johns & C. Christopoulos

Abstract

Invited Paper Numerical calculation of magnetic shielding effectiveness of enclosures using the frequency-domain TLM technique D. Johns," C. Christopoulos* & Kimberley Communications Consultants Ltd., 104 GPT Business Park, Technology Drive, Beeston, Nottingham NG9 * Department of Electrical & Electronic Engineering, Nottingham University, University Park, Nottingham 1. Introduction The ability to predict the electromagnetic shielding afforded by electronic equipment housing is important in designing to satisfy the Electromagnetic Compatibility (EMC) directives introduced recently. Electromagnetic energy can penetrate into the housing by coupling through apertures in the housing surface, diffusion through the walls of the housing and by conduction of current along wires. The shielding effectiveness of the housing is dependent on both the shape of the housing and the electrical properties of the housing material. 3-D numerical modelling enables the design engineer to co

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