FDTD analysis of magnetized ferrites: an approach based on the rotated Richtmyer difference scheme

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.<>