Title :
Double valued phase constants in gyrotropic waveguides
Author :
Gibson, A.A.P. ; Sloan, R. ; Davis, L.E. ; Paul, D.K.
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
fDate :
6/1/1991 12:00:00 AM
Abstract :
Double valued phase constants for one direction of applied magnetic field in gyrotropic waveguides commonly occur in the vicinity of a degeneracy between hybrid modes at cut-off. A study of the circularly symmetric TM modes in azimuthally magnetised, plasma filled, coaxial waveguides, indicates that such a degeneracy is not a prerequisite condition for double roots. Cut-off curves are presented for the first two such modes together with a study of the behaviour of the transverse wavenumber for the dominant mode.
Keywords :
electromagnetic wave propagation in plasma; waveguide theory; waveguides; azimuthally magnetised; circularly symmetric TM modes; coaxial waveguides; cut-off curves; dominant mode; double value phase constants; gyrotropic waveguides; hybrid modes; magnetic field; plasma filled; transverse wavenumber;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
