Title :
Phase shift calculations in axially-magnetized ferrites using the finite element method
Author :
Dillon, B.M. ; Gibson, A.A.P.
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
Abstract :
A vector finite element solver is used to calculate the phase shift in uniform axially magnetized gyromagnetic waveguides. Ferrite characteristics are specified in terms of the applied field, frequency, and material characteristics, including saturation magnetization and data from the hysteresis curve. Periodic boundary conditions are used to reduce the size of the meshed region. Calculations are compared with experimental results for two typical waveguide cross-sections: a quadruple-ridge Faraday rotation section and a reciprocal Reggia-Spencer section.<>
Keywords :
ferrite devices; finite element analysis; phase shifters; waveguide components; axially-magnetized ferrites; finite element method; hysteresis curve; meshed region; phase shift; quadruple-ridge Faraday rotation section; reciprocal Reggia-Spencer section; saturation magnetization; vector finite element solver; waveguide cross-sections; Eigenvalues and eigenfunctions; Ferrites; Finite element methods; Frequency; Magnetic analysis; Magnetic fields; Magnetic materials; Permeability; Phase shifters; Tensile stress;
Conference_Titel :
Microwave Symposium Digest, 1993., IEEE MTT-S International
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-1209-0
DOI :
10.1109/MWSYM.1993.276778
