Title :
A modified 3D fourth order FDTD algorithm M3d/sub 24/ for improving phase accuracy with low resolution
Author :
Abd El-Raouf, H.E. ; El-Diwani, E.A. ; El-Hadi Ammar, A. ; El-Hefnaw, F.M.
Author_Institution :
Dept. of Microwave Eng., Electron. Res. Inst., Cairo, Egypt
Abstract :
A second order in time-fourth order in space modified finite difference time domain algorithm for 3D electromagnetic problems is presented. The algorithm enables the numerical phase error to be minimized, so that it leads to high accuracy with low resolution grids. Good results for long distance propagation in the case of radiation from time harmonic elementary dipole show the advantage of this method with low resolution compared to the previous finite difference time domain methods.
Keywords :
antenna radiation patterns; dipole antennas; dispersion (wave); electromagnetic wave propagation; finite difference time-domain analysis; numerical stability; 3D electromagnetic problems; dispersion equation; finite difference time domain algorithm; high frequency techniques; long distance propagation; low resolution grids; modified 3D fourth order FDTD algorithm; numerical phase error; phase accuracy; stability condition; time harmonic elementary dipole radiation; Dispersion; Eigenvalues and eigenfunctions; Equations; Finite difference methods; Network address translation; Propagation constant; Stability; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789115
