High-order accurate ADI-FDTD method with high-order spatial accuracy

Author

Xiao, Fei ; Tang, Xiaohong ; Guo, Lei

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Chengdu

fYear

2007

fDate

16-17 Aug. 2007

Firstpage

938

Lastpage

941

Abstract

A new concept of the exponential evolution operator (EEO) is introduced, from which the conventional ADI-FDTD method can be derived. And what´s more important, new high-order accurate unconditionally-stable ADI-FDTD method can be constructed from the EEO. In order to improve spatial accuracy, fourth-order accurate central finite difference scheme is used in the new method. The final analysis shows that its numerical dispersion error is greatly reduced in compared with that of the conventional one. In this paper, the principal characteristics and the disadvantages of genetic algorithm and BP algorithm are introduced.

Keywords

Maxwell equations; computational electromagnetics; dispersion relations; finite difference time-domain analysis; genetic algorithms; BP algorithm; alternating direction implicit-finite difference time domain method; exponential evolution operator; fourth-order accurate central finite difference scheme; genetic algorithm; high-order accurate ADI-FDTD method; high-order spatial accuracy; numerical dispersion error; Antennas and propagation; Communications technology; Electromagnetic compatibility; Finite difference methods; Microwave antennas; Microwave propagation; Microwave technology; Microwave theory and techniques; Time domain analysis; Wireless communication; Exponential evolution operator; High-order accurate ADI-FDTD method; Numerical dispersion;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on

Conference_Location

Hangzhou

Print_ISBN

978-1-4244-1045-3

Electronic_ISBN

978-1-4244-1045-3

Type

conf

DOI

10.1109/MAPE.2007.4393783

Filename

4393783