Title :
Stability, accuracy and application of an FDTD-TDFEM algorithm [patch antenna example]
Author :
Rylander, Thomas ; Bondeson, Anders ; Liu, Yueqiang
Author_Institution :
Dept. of Electromagn., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Hybrid methods can offer significant advantages for geometries where different regions of space have different characteristics. Here we describe a hybrid scheme which combines FDTD and TDFEM. An application that clearly shows the advantages of the hybrid is the calculation of the radiation diagram of a 1 GHz patch antenna, mounted on the rear-view mirror in a car. For good accuracy, the patch must be resolved with a rather fine grid, but it would be very costly in terms of memory and execution time to use such a grid for the entire car. The hybrid allows high resolution around the antenna, while the rest of the car can be resolved with standard resolution.
Keywords :
UHF antennas; antenna radiation patterns; finite difference time-domain analysis; finite element analysis; microstrip antennas; mobile antennas; numerical stability; 1 GHz; antenna radiation diagram; car rear-view mirror mounted antenna; grid resolution size; hybrid FDTD-TDFEM algorithm; patch antenna; Bonding; Eigenvalues and eigenfunctions; Electromagnetics; Finite difference methods; Finite element methods; Geometry; Space technology; Stability; Symmetric matrices; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330517
