Dielectric waveguide

摘要

A dielectric waveguide has a dielectric member disposed between a pair of parallel conductor flat surfaces, such that a propagating region and a non-propagating region are formed. The spacing between the conductor flat surfaces in the non-propagating region is determined to be smaller than that in the propagating region. The above-mentioned spacings and the dielectric constant of the dielectric member are determined such that the cut-off frequency of the LSM01 mode propagating through the propagating region is lower than the cut-off frequency of the LSE01 mode and that electromagnetic waves of both the LSM01 mode and the LSE01 mode are cut-off in the non-propagating region, so that any transmission loss attributable to a mode conversion between the LSM01 mode and LSE01 mode occurring at, for example, a bend of the waveguide is eliminated so as to facilitate production of the waveguide having a desired bend angle and radius of curvature. <IMAGE>