The basis of a theory for the shielding by cylindrical generalized screens

Two new concepts applicable to cylindrical generalized screens are introduced: standard responses and standard excitations. The standard responses allow the description of any current and charge distribution on the screen. For a given generalized screen´s cross-section, they can be derived from the complex potential of a simple electrostatic problem. The standard excitations are electromagnetic (EM) field configurations suitable for a description of fields created by sources external to the screen. All standard excitations are explicitly computed in the case of a circular cylindrical shield. We present only three standard excitations for the case of the elliptical cylinder, and for the case of a rectangular cylinder