Propagation Characteristics of Rectangular Dielectric Waveguide at Millimeter Waveband

The attenuation properties of homogeneous rectangular dielectric waveguide are studied for the design of low attenuation transmission line in millimeter waveband. The properties of transmission loss for different cross sections of waveguide are analyzed in terms of guided wave and surface wave. The field distributions along the transverse directions are also calculated and compared for the cases of different parameters. The results show that if the cross section of the waveguide is properly designed, the rectangular dielectric waveguide can realize a relatively low transmission attenuation, which could be used in the application of next generation (5G) of wireless communication systems.