PROPAGATION OF MICROWAVES THROUGH A CYLINDRICAL METALLIC GUIDE FILLED COAXIALLY WITH TWO DIFFERENT DIELECTRICS-PART III.

Abstract

The propagation characteristics for the TE mn, TM mn  hence TE 01  and TM 11  modes in a cylindrical metallic guide having a coaxial structure  with two different dielectrics have been derived. The result indicates  that the phase velocity for a given mode can be adjusted to a preassigned  value by a suitable choice of the dielectric consunts and radii of the two  media. The calculation of the power flowing through the guide in the  case of the TE 01  mode shows that most of the power is located in the  medium having higher dielectric constant. The energy distribution in  the radial direction in the case of the TE 0l  mode has been obtained by  plotting the real part of the complex Poynting vector vs. radius.