By Topic

Efficient Low Order Approximation for Surface Impedance Boundary Conditions in Finite-Difference Time-Domain Method

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
V. De Santis ; $^{1}$Foundation for Research on Information Technologies in Society (IT'IS), Zeughausstrasse 43,, Switzerland ; S. Cruciani ; M. Feliziani ; M. Okoniewski

An efficient implementation of low order surface impedance boundary conditions (SIBCs) for the finite-difference time-domain (FDTD) method is presented. The surface impedance function of a lossy medium is approximated with a series of first-order rational functions by using the vector fitting (VF) technique. Thus, the resulting time-domain convolution integrals are efficiently computed using recursive formulas. The numerical error of the surface impedance modeled by the FDTD method is carried out analytically. A sensitivity analysis is performed to determine the minimum number of poles required by the VF technique to achieve good accuracy in modeling regions bounded by several lossy media with near- or far-field source excitations.

Published in:

IEEE Transactions on Magnetics  (Volume:48 ,  Issue: 2 )