Peculiarities of electromagnetic wave propagation in dielectric waveguides in the region of weak retardings

The propagating properties of dielectric waveguides (DW) working in millimeter wave range are investigated. The interest and attention are focused on the peculiarities of a propagation of electromagnetic waves in dielectric waveguides in the region of weak retardings. The losses in DWs in 3 mm wavelength range have been experimentally measured. The results of the experiment demonstrate the promising use of these lines in communication systems in mm and sub mm range.