Near- and far-field calculations in FDTD simulations using Kirchhoff surface integral representation

Author

Ramahi, Omar M.

Author_Institution

Digital Equipment Corp., Maynard, MA, USA

Volume

45

Issue

5

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

753

Lastpage

759

Abstract

Kirchhoff´s surface integral representation (KSIR) is used to calculate the near and far fields from the finite difference time domain (FDTD) simulation. The KSIR is very simple to implement and its distinct advantage is that the calculation of any of the six field components depends on the value of the same field component over a closed surface. This avoids interpolation errors when using the popular Yee scheme for FDTD. In addition to its efficiency and simplicity of implementation, the KSIR leads to highly accurate near fields that reduce absorbing boundary condition (ABC) errors

Keywords

digital simulation; electromagnetic fields; error analysis; finite difference time-domain analysis; integral equations; simulation; FDTD simulations; Kirchhoff surface integral representation; Yee scheme; absorbing boundary condition errors; closed surface; efficiency; far-field calculations; field components; finite difference time domain; near-field calculations; Boundary conditions; Computational modeling; Electromagnetic measurements; Electromagnetic radiation; Finite difference methods; Integral equations; Interpolation; Iron; Time domain analysis; Transmission line measurements;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.575616

Filename

575616