Gasketed Joint Shielding
When a radiated EM force field is impinged on a metallic shielding barrier, a current (surface
current density in amperes per meter) is generated in the material. When the current flows across a gasketed maintenance cover as illustrated in Figure 7, a voltage
e is generated across the gasket.The value of e is equal to the
current in amperes/meter times the impedance of the joint (transfer impedance in ohm-meters).