Propagation behaviour of periodically loaded waveguides containing dielectric and ferrimagnetic materials

摘要: The propagation behaviour is described of a number periodically loaded circular waveguide structures containing either dielectric or axially magnetised ferrimagnetic material. include the disc-loaded axial rod and tube. Dispersion characteristics are theoretically determined dependence lower upper cutoff frequencies upon various structural material parameters studied. For ferrite structure, two passbands observed for each mode, one occurring below resonance, other above resonance. centre frequency passband can be varied by changing strength applied magnetic field. Experimental dispersion shown both structures, these found to agree well with those predicted theoretically.