Title :
Attenuation characteristics of dominant mode in inhomogeneously filled transmission lines
Author :
Chambers, B. ; Kharadly, M.M.Z.
Author_Institution :
University of British Columbia, Department of Electrical Engineering, Vancouver, Canada
fDate :
5/1/1970 12:00:00 AM
Abstract :
For a parallel-plate or coaxial transmission line, a dielectric layer of sufficiently high permittivity placed in the space between the conductors, but adjacent to neither, can result in an attenuation coefficient which is significantly lower than that of the air-filled line. The dominant mode in these lines is shown to be a TM mode with no lower cutoff frequency. The expressions for the attenuation coefficient, derived by a perturbational technique, are applicable for any range of line dimensions and dielectric-layer permittivity and thickness.
Keywords :
dielectric properties of substances; transmission line theory;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1970.0178