Cut-off and phase constants of partially filled axially magnetized, gyromagnetic waveguides using finite elements

Author

Dillon, Bernice M. ; Gibson, Andrew A P ; Webb, Jon P.

Author_Institution

Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK

Volume

41

Issue

5

fYear

1993

fDate

5/1/1993 12:00:00 AM

Firstpage

803

Lastpage

808

Abstract

A three-component vector finite-element formulation for modeling the propagation characteristics of partially filled, axially magnetized, gyromagnetic waveguides is described. Covariant-projection elements have been used to avoid spurious modes, and periodic boundary conditions have been implemented to improve numerical efficiency. The classic quadratic functional derived from the vector, curlcurl, magnetic field equation is suited to evaluating the cut-off planes of gyrotropic waveguides. A known field transformation is used to reformulate the functional in a form convenient for calculating phase constants. Cut-off and phase constant solutions are presented for both fully and partially filled, longitudinally magnetized, ferrite-loaded waveguides

Keywords

boundary-value problems; dielectric-loaded waveguides; ferrite applications; waveguide theory; axially magnetized; covariant projection elements; curlcurl magnetic field equation; cutoff calculation; ferrite-loaded waveguides; field transformation; finite-element formulation; gyromagnetic waveguides; longitudinally magnetized; modeling; partially filled; periodic boundary conditions; phase constants; propagation characteristics; three-component vector FEA; Boundary conditions; Equations; Ferrites; Finite element methods; Geometry; Gyromagnetism; Magnetic analysis; Magnetic fields; Magnetic separation; Waveguide components;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.234514

Filename

234514