Electromagnetic wave diffraction by cylindrical bodies with edges

An accurate numerical-analytical method of solution of the problem of wave diffraction by a perfectly conductive cylindrical body with a cross-section formed by crossing of the “key” elements (such as flat strips and cylindrical screens) is proposed. It is based on the ideas of the moment method and the partial inversion technique of the initial problem operator. For this problem, Gegenbauer polynomials form a complete orthogonal system of the basic functions. As a result, the initial problem is reduced to the solving of infinite systems of linear algebraic equations. Examples of the flat strip, two crossing cylinders (the cylindrical body with an ogival cross-section) and four quadrangular bodies are studied. Surface current density distributions, total scattering cross sections and radiation patterns are investigated by means of computer calculations.