The combined method of finding solutions to the dispersion equation for waveguide electrodynamic structures on the complex plane of one of the wave numbers

The problem of solving the dispersion equation for waves guideway electrodynamic structures on the complex plane of one of the wave numbers is considered. Combined method based on the combination of positive properties Muller method and the method of phase variation, based on the principle of the argument is proposed. The procedure of the application of the method is described.