CHARACTERIZATION AT MICROWAVE FREQUENCIES OF MAGNETIC COMPOSITE AND SHIELDS FOR ELECTROMAGNETIC PROTECTION

摘要

Rapid developments in telecommunications and digital processing of information are lacing the problem of electromagnetic wave pollution and interference. The aim of this article is the characterization at microwave frequencies [2] of new magnetic composite materials [1], for broadband electromagnetic wave shields. We report the preparation and microwave properties of new magnetic composite materials and electromagnetic shields. These materials contain a ferromagnetic composite, in proportion of 60-99%. The magnetic properties at microwave frequencies have been determined between 0.8-12 GHz. The properties of attenuation at microwave frequencies have been correlated with the composition of ferromagnetic composites.