Fundamental wave phenomena on biased-ferrite planar slab waveguides in connection with singularity theory

A.B. Yakovlev, G.W. Hanson
2003 IEEE transactions on microwave theory and techniques  
In this paper, characteristic dispersion phenomena and interactions of the discrete surface-and leaky-wave modes supported by a grounded biased-ferrite slab waveguide are analyzed using singularity and critical-point theory. Surface-and space-wave leaky modes are studied for different orientations of the applied magnetic bias field. As the bias field is rotated away from a coordinate axis, the modes become hybrid, and mode coupling or modal degeneracies may occur. Mode coupling, in general, is
more » ... overned by a Morse critical point (MCP), and the behavior of the MCP is found to be useful in explaining and predicting modal behavior on this complicated waveguiding structure. In addition, leaky-wave dispersion behavior and leaky-wave cutoff associated with a fold singular point is studied by varying the orientation of the applied magnetic bias field.
doi:10.1109/tmtt.2002.807809 fatcat:w76ukdcmmbavxbkg6pkwhn6rri