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

Volume

2

fYear

2004

fDate

20-25 June 2004

Firstpage

1676

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1330517

Filename

1330517