Complex shape the contours of the resonant frequencies to find the Method of auxiliary sources

The work concerns to the resonant systems and devices (resonators) Eigen resonant frequencies and fields determination using the Method of Auxiliary Sources (MAS). This topic is related to the very topical problem, which is called the Eigen functions and Eigen values problem and represents its particular electrodynamic case. For certain 2D and 3D resonators examples there is shown MAS efficiency in the considered problem.