Internal electromagnetic scattering of an open cylinder with complex terminations

This paper deals with the internal scattering of an open cylinder that is illuminated by an incident plane wave. Three different types of terminations for the cylinder are considered: a short-circuit flat plate, a plug represented by a section of coaxial guide with a short-circuit plate, and a set of coplanar blades. In the last termination, energy transmitted through the gaps in the blades is absorbed by a load. Of interest is the monostatic radar cross-section (RCS) of the cylinder with these terminations. In the case of the blades, the spectral energy of the scattered wave which is modulated by blade rotation, is also evaluated.