Title :
Frozen Modes in Coupled Microstrip Lines Printed on Ferromagnetic Substrates
Author :
Stephanson, Matthew B. ; Sertel, Kubilay ; Volakis, John L.
Author_Institution :
Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH
fDate :
5/1/2008 12:00:00 AM
Abstract :
A microstrip transmission line model is proposed for magnetic photonic crystals having a stationary inflection point in their dispersion diagrams. The model is formed from an existing degenerate band edge microstrip circuit by replacing the substrate material with a properly biased ferrite. Using the four port unit cell´s transfer matrix, we calculate the dispersion diagram of the periodic structure and verify the stationary inflection behavior. Variation of the geometry parameters to tune the k - omega diagram is also discussed.
Keywords :
coupled transmission lines; ferromagnetic materials; matrix algebra; microstrip circuits; microstrip lines; photonic crystals; coupled microstrip lines; dispersion diagram; edge microstrip circuit; ferromagnetic substrates; magnetic photonic crystals; microstrip transmission line model; stationary inflection point; transfer matrix; Anisotropic media; ferrite devices; magnetic photonic crystals; metamaterials; nonreciprocal media; transmission line (TL) model;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.922107
