Title :
Analysis of planar antennas using unconditionally stable three-dimensional ADI-FDTD method
Author :
Yang, Y. ; Chen, R.S. ; Ye, Z.B. ; Wang, D.X.
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol.
Abstract :
In this article, two kinds of absorbing boundary conditions (ABCs) are jointly employed for the ADI-FDTD algorithm: The Gedney´s uniaxial PML (UPML) scheme is applied in propagation direction and Mur´s first order ABC is set on the other outer surfaces. The manner to apply the source excitation in ADI-FDTD algorithm is described. The numerical simulation of a planar antenna demonstrates the validity of this ADI-FDTD scheme. The results show that the number of iterations with this algorithm can be four times less than that with the conventional FDTD without the large loss of accuracy
Keywords :
antenna theory; electromagnetic wave absorption; finite difference time-domain analysis; iterative methods; numerical stability; planar antennas; radiowave propagation; absorbing boundary conditions; planar antennas; propagation direction; three-dimensional ADI-FDTD method; uniaxial PML; Antennas and propagation; Computational modeling; Finite difference methods; Maxwell equations; Numerical simulation; Patch antennas; Planar arrays; Stability; Time domain analysis; Transmission line matrix methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1551512
