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

Volume

18

Issue

5

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

305

Lastpage

307

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;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2008.922107

Filename

4497819