By Topic

A simple absorbing boundary condition for FDTD modeling of lossy, dispersive media based on the one-way wave equation

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

2 Author(s)
Kosmas, P. ; Center for Subsurface Sensing & Imaging Syst., Northeastern Univ., Boston, MA, USA ; Rappaport, C.

Motivated by previous work on modeling dispersive media with a single pole, Z-transform conductivity model, we present an absorbing boundary condition (ABC) for such media, based on the one-way wave equation. The applicability of the method is tested on a three dimensional (3-D) finite-difference time-domain grid excited with a broadband Gaussian pulse, modulated at 2 GHz. For such media and this high frequency range, the resulting reflection ratio for normal incidence is less than 1%. A comparison in 2-D grids with the original perfectly matched layer (PML) ABC for dispersive media shows that for small angles of incidence, this Mur-type ABC is superior. In addition, it requires no additional storage of field components, is easy to implement, and is readily parallelizable. Therefore, despite its limitations, it can be a good alternative to other PML-based ABCs for lossy dispersive media, in high frequency applications such as underground radar or microwave imaging.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:52 ,  Issue: 9 )