Title :
Ray-based finite-difference method for time-domain electromagnetics
Author :
Ciydem, Mehmet ; Koc, Sencer S.
Author_Institution :
Boeing Co., Kent, WA, USA
Abstract :
In this study, the construction of full time-dependent solution of EM fields in space-time by exploiting discontinuities of fields, Taylor series and geometrical optics (GO) tools is introduced. The solution is establish by first finding the GO field and then improving it with higher order discontinuities on the wavefronts, along the rays in time. The proposed method is implemented on a sample problem of a Hertzian dipole in an isotropic homogeneous medium. Simulation studies, when compared with analytical and FDTD results, show that consistent and accurate results are obtained.
Keywords :
computational electromagnetics; electromagnetic fields; electromagnetic wave propagation; finite difference methods; geometrical optics; ray tracing; series (mathematics); EM fields; GO field; Hertzian dipole; Taylor series; full time-dependent solution; geometrical optics; higher order discontinuities; isotropic homogeneous medium; ray-based finite-difference method; time-domain electromagnetics; Boundary conditions; Differential equations; Eigenvalues and eigenfunctions; Finite difference methods; Magnetic fields; Maxwell equations; Partial differential equations; Stability; Taylor series; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551739
