Title :
A treatment of magnetized ferrites using the FDTD method
Author :
Pereda, J.A. ; Vielva, L.A. ; Vegas, A. ; Prieto, A.
Author_Institution :
Dept. of Electron., Cantabria Univ., Spain
fDate :
5/1/1993 12:00:00 AM
Abstract :
The finite-difference-time-domain (FDTD) method is extended to include magnetized ferrites. The treatment of the ferrite material is based on the equation of motion, using Gilbert´s approximation of the damping term. The validity of the formulation is verified by applying it to the calculation of propagation constants in waveguides containing ferrites with transverse magnetization. The results for a rectangular waveguide filled with ferrites and those for a rectangular waveguide loaded with a centered ferrite slab are compared with the exact results, showing good agreement.<>
Keywords :
dielectric-loaded waveguides; ferrites; finite difference time-domain analysis; rectangular waveguides; waveguide theory; FDTD method; Gilbert´s approximation; centered ferrite slab; damping term; finite-difference-time-domain; magnetized ferrites; propagation constants; rectangular waveguide; transverse magnetization; waveguides; Damping; Equations; Ferrites; Finite difference methods; Loaded waveguides; Magnetic materials; Magnetization; Propagation constant; Rectangular waveguides; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
