Title :
A novel nonreciprocal ferrite image guide
Author :
Akyol, A.S. ; Davis, L.E.
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
Abstract :
A single ferrite/dielectric image line is analyzed using the effective permittivity method, adapted for ferrites. E/sub pq//sup x/ modes are used in association with a transverse bias direction to obtain nonreciprocal behavior. It is shown that the required conditions can be obtained that enables the composite image line to guide in one direction and leak in the other. Thus, the structure behaves as a "leaky-wave isolator". Dispersion diagrams showing this behavior in the frequency range 14-30 GHz are obtained for a 2/spl times/2 mm/sup 2/ ferrite rod with adjacent dielectric loading with /spl epsi//sub r/=11.
Keywords :
dielectric-loaded waveguides; dispersion (wave); ferrite isolators; ferrite waveguides; permittivity; waveguide theory; 14 to 30 GHz; adjacent dielectric loading; composite image line; dispersion diagrams; effective permittivity method; ferrite rod; leaky-wave isolator; nonreciprocal ferrite image guide; single ferrite/dielectric image line; transverse bias direction; Conductors; Dielectrics; Ferrites; Frequency; Gyrotropism; Image analysis; Isolators; Optical waveguides; Permittivity; Slabs;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.967102
