Rigorous solution by analytical regularization method to the problem of 3D TM-ϕ wave diffraction by a set of axially symmetrical annular PEC surfaces

The analytical regularization method is applied to the problem o f 3D TM-ϕ wave diffraction by perfectly conductive axially symmetrical a nnular surfaces consisting a set of closed and unclosed ones. The electromagnetic boundary value problem is reduced to t he infinite algebraic system of the second kind which in principal can be solved with any predetermined accuracy by means of truncation procedure. Numerical results, including condition number and field´s space distribution for obstacles will be presented.