The Spectrum of Electromagnetic Waves in a Planar Gyrotropic Plasma Waveguide

A detailed investigation of the spectrum of the waves propagating in the parallel-plate waveguide is carried out. It is shown that four families of waves can propagate in the planar gyrotropic plasma waveguide: plasma, cyclotron, anisotropic and waveguide modes. It is proved that the singular waves propagate in the crossing points of the waves with the complex zone boundary. The influence of the width of the waveguide and the magnetization of the plasma on the spectrum of the waves is analysed. As a rule the, cut-off frequencies of the propagating modes decrease with an increase in the width, and increase with the increase of magnetization. The fields of different kinds of the waves are plotted and a comparison is made between them. The evolution of the fields along the dispersion curves is shown.