A Hybrid 2D/3D cylindrical FDTD method based on azimuthal mode decomposition

Author

Kirsch, Stefan ; Schuhmann, Rolf

Author_Institution

Theor. Elektrotechnik, Tech. Univ. Berlin, Berlin, Germany

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

A method to overcome unfavorably small time steps in FDTD simulations on cylindrical meshes is proposed in this paper. A three dimensional cylindrical grid for azimuthally inhomogeneous regions apart from the z-axis is coupled to a multi modal two dimensional grid in the vicinity of the origin. This leads to a diminished ammount of mesh cells and, furthermore, permits the employment of a larger time step. The method is demonstrated by means of a time domain simulation of a microgear resonator to determine its resonant frequencies.

Keywords

finite difference time-domain analysis; azimuthal inhomogeneous regions; azimuthal mode decomposition; cylindrical meshes; hybrid 2D-3D cylindrical FDTD method; microgear resonator; multimodal two dimensional grid; resonant frequencies; three dimensional cylindrical grid; time domain simulation; z-axis; Computational modeling; Discrete Fourier transforms; Finite difference methods; Materials; Probes; Resonant frequency; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6348745

Filename

6348745