Dispersion charactersitics and electric field distributions of modes propagating in the open electrically gyrotropic semiconductor rod waveguide

Here we present the electrodynamical analysis of the circular cylindrical rod semiconductor n-InSb waveguide placed in the external longitudinal magnetic field. We have investigated electric field distributions of the main and fives higher modes propagating in the n-InSb waveguide at the frequency range from 60 GHz till 240 GHz. We have investigated only the higher hybrid modes HE_mn and EH_mn with the same symmetry as the main mode when the azimuthal index m = 1. The waveguide radius is r = 1.5 mm and the electron concentration of the semiconductor n-InSb is N = 10¹⁹ m^-3,. We discovered that the electric field intensity of investigated hybrid modes is observed in the different cross-section places. This fact can be useful for an excitement of some required modes or creating controllable solid-state electronic devices.