Assessment of conductive gaskets using X-ray fluorescence technique

EMI control is a very crucial step in ensuring a satisfactory environment for the coexistence of different types of electrical/electronic equipment. At the equipment design stage, EMI control methods, such as grounding, bonding, filtering and shielding are used for achieving EMC. Conductive gaskets are used to reduce RF leakage at seams and joints, such as front panel mountings and cabinets etc. The shielding effectiveness (SE) of the gasket is a critical parameter which determines the adequacy for use in equipment. This paper describes the use of an indirect method namely the XRF technique, for determining the adequacy of conductive gaskets for use in equipment to reduce radiation related EMI problems.