Title :
FDTD analysis of magnetized ferrites: an approach based on the rotated Richtmyer difference scheme
Author :
Pereda, José A. ; Vielva, Luis A. ; Vegas, Angel ; Prieto, Andrés
Author_Institution :
Dept. de Electron., Cantabria Univ., Spain
Abstract :
Electromagnetic wave propagation in magnetized ferrites is modeled by solving Maxwell´s time-dependent curl equations coupled with the equation of motion of the magnetization vector. A discretization approach based on the rotated Richtmyer finite-difference scheme is proposed. The new approach has been used to calculate the phase constants of transversally magnetized ferrite-loaded waveguides. The numerical dispersion equation for TE/sub n0/ modes is derived. The results obtained with this approach for a ferrite-filled and a ferrite-slab loaded waveguide are compared with those obtained with Yee´s scheme extended for the treatment of ferrites and with the exact results.<>
Keywords :
Maxwell equations; dielectric-loaded waveguides; dispersion (wave); electromagnetic wave propagation; ferrites; waveguide theory; EM wave propagation; FDTD analysis; Maxwell´s time-dependent curl equations; Richtmyer finite-difference scheme; TE/sub n0/ modes; equation of motion; ferrite-loaded waveguides; ferrite-slab; magnetization vector; magnetized ferrites; numerical dispersion equation; phase constants; rotated Richtmyer difference scheme; transversally magnetized; Electromagnetic coupling; Electromagnetic modeling; Electromagnetic propagation; Electromagnetic waveguides; Ferrites; Finite difference methods; Magnetic analysis; Magnetization; Maxwell equations; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
