A stable and consistent generalization of the FDTD technique to nonorthogonal unstructured grids

Author

Cinalli, Marco ; Schiavoni, Andrea

Author_Institution

Dept. of Electromagnetism & Bioeng., Univ. Politecnica delle Marche, Ancona

Volume

54

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

1503

Lastpage

1512

Abstract

A new way to extend the finite difference time domain (FDTD) technique to nonorthogonal grids is described in this paper. The method, whose theoretical foundations are based on the Finite Integration Technique and on recently extended affine theories, can be proven to be both stable and consistent. In order to show its benefits, the nonorthogonal FDTD is applied to the analysis of a cylindrical cavity and to the characterization of biconical antennas for ultrawideband applications

Keywords

conical antennas; finite difference time-domain analysis; integration; ultra wideband antennas; FDTD technique; biconical antenna; consistent generalization; cylindrical cavity; finite difference time domain analysis; finite integration technique; nonorthogonal unstructured grid; ultrawideband application; Finite difference methods; Geometry; Integral equations; Maxwell equations; Shape; Stability; Telecommunications; Time domain analysis; Ultra wideband antennas; Ultra wideband technology; Consistency; nonorthogonal finite difference time domain (FDTD); stability; unstructured grids;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2006.874322

Filename

1629281