The electromagnetic (EM) interference is one of the major issues in EM
wave applications. To prevent electronic devices from the EM wave interference, there
is a need to find novel materials for shielding the EM wave interference. In this
chapter, we discussed the EM wave interference and the effective EM interference
parameters to find the strength of shielding. The chapter contains the mechanism and
some derived materials reported by the various scientists. The materials are classified
as ferrites, composites, and carbon-based materials. Herein, some other interesting
materials like ferrites and conducting polymer composites were discussed to shield the
EM interference.
Keywords: Dielectric loss, Electromagnetic Interference, Ferrites, Polymers,
Shielding.