𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Zero phase velocity error finite-difference time-domain method for small space step and large time step sizes

✍ Scribed by Mehmet Kusaf; Abdullah Y. Oztoprak


Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
770 KB
Volume
54
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

Unconditionally stable multi (4, 6, and 8) split‐step finite‐difference time‐domain methods are isotropic for a certain space step size and a stability factor.It is shown in this letter that for small step sizes the phase velocity errors can be corrected by using a factor which is a function of the product of the space step size and the stability factor. This way, it is not necessary to obtain the multiplication factor each time when a different space step size is used. Also, by using this multiplication factor zero phase velocity error can be obtained in all directions at a chosen frequency. Performance analyses have shown that the method is also wideband. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:423–426, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26567


📜 SIMILAR VOLUMES


Relation between the time and space step
✍ Ronald E. Mickens 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 57 KB 👁 2 views

A positivity condition is used to obtain functional relations between the time and space step-sizes for nonstandard finite-difference models of the Fisher partial differential equation. An upper bound is also derived for the solutions to the difference equations.