Efficient tensor based FDTD scheme for modeling sloped interfaces in lossy media
✍ Scribed by Gurpreet Singh; Eng Leong Tan; Zhi Ning Chen
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 250 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
This article presents an efficient tensor based finite‐difference time‐domain (FDTD) scheme for modeling sloped interfaces in lossy media. The formulated scheme achieves its improved efficiency by implicitly solving the internal fields affected by an interface. This permits the reduction of updating coefficients in the scheme. FDTD simulations that are generally used to compute scattering parameters or radar cross sections gain from this implicit computation. The scheme is formulated without assuming any single frequency approximation, previously assumed in the literature. This permits FDTD simulation results over a wide frequency bandwidth in a single FDTD simulation run. To allow a more accurate and conformal approximation, the scheme extends the use of cell filling ratio to lossy media. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1530–1537, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24398