A 1-D propagator for introduction of plane wave to layered magnetized plasma in FDTD method

In the application of finite-difference time-domain (FDTD) method to wideband plane wave scattering from layered magnetized plasma, it is a challenge to solve the oblique incident plane wave source in 2-D/3-D simulation space. In this work, an efficient 1-D source propagator is proposed for initiation of incident plane wave on the total-field/scattered-field (TF/SF) boundary in layered magnetized plasma in order to introduce plane wave source in the FDTD simulation space. The 1-D source propagator is developed by using of the phase match theory at the medium interface. The characteristics of wideband plane wave scattering from an n-layer magnetized plasma sheath are calculated and the comparisons with exact solutions are given that clearly exhibit the accuracy of the 1-D source propagator.