An artificially-synthesized absorbing medium for the truncation of FDTD lattices

Citation
Wh. Yu et al., An artificially-synthesized absorbing medium for the truncation of FDTD lattices, IEEE MICR G, 10(4), 2000, pp. 128-130
Citations number
11
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE MICROWAVE AND GUIDED WAVE LETTERS
ISSN journal
10518207 → ACNP
Volume
10
Issue
4
Year of publication
2000
Pages
128 - 130
Database
ISI
SICI code
1051-8207(200004)10:4<128:AAAMFT>2.0.ZU;2-S
Abstract
An artifiicially-synthesized absorbing material composed of a doubly-period ic array of lossy electric and magnetic media (i.e., an epsilon and mu chec kerboard) is presented for the truncation of Finite-Difference Time-Domain (FDTD) lattices in waveguide simulations. It is shown numerically that this artificially-synthesized material exhibits excellent absorption properties when used in waveguide simulations, However, unlike the Perfectly Matched Layer (PML) absorbing medium, the artificially-synthesized medium presented in this letter does not require any modification of the standard FDTD form ulation. Numerical examples demonstrate that the FDTD implementation of the artificially-synthesized absorbing medium is stable as well as computation ally efficient.