Mixture Properties of Carbon Fibre Composite Materials for Electronics Shielding in Systems Packaging

The use of carbon fibres in composite materials is reported for laminate materials used in electronics packaging. The effective medium theory is described for this application and used to estimate the effective complex permittivity of the laminate and hence produce a theoretical shielding effectiveness for the material. To validate this work experimental methods are discussed using the waveguide simulator technique. Agreement between simulation and measurement is very good