An improved conformal FDTD algorithm of modeling planar microwave structures
✍ Scribed by Xiaolong Zhong; Kenneth K. Mei
- Book ID
- 102518061
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 209 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
An improved conformal FDTD algorithm for microwave planar structure is presented in this paper. To achieve high‐level accuracy and universality, but still keep the efficiency of the FDTD method, improved locally conformal algorithm and non‐uniform orthogonal grids are employed to model the planar metal structures. All field components in destructed lattice are updated using locally conformal integral form of equations in order to achieve more accurate results. And with non‐uniform orthogonal grids, arbitrary‐shape metal strips can be modeled without generating a lot of unstructured meshes. In this algorithm, additional updating procedures for the fields in the destructed Yee lattice are no longer needed. The time marching procedures remain almost as simple as a uniform rectangular grids scheme. An oblique positioned microstrip stub structure is tested as an example to show the validity of this algorithm. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 219–224, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10562