| Numerical Investigation of an Unconditionally Stable Compact 2D FDTD Based on the Alternating-Direction Implicit Scheme |
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Ju Saehoon1, Cheon Jeongnam1, Hyung-Hoon Kim2, Hyeongdong Kim1 |
1Department of Electrical and Computer Engineering, Hanyang University
2Department of Computer Science, Kwangju Women′s University |
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| Abstract |
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An unconditionally stable compact 2D Alternating-Direction Implicit (ADI) FDTD method for calculating dispersion characteristics of waveguide structures is proposed. The numerical stability and numerical dispersion relation of the proposed method are also presented and discussed. Numerical wavelengths for the dominant and higher order modes in a hollow waveguide are obtained from numerical simulations and compared with those from the analytical dispersion relation. The numerical results show that the proposed scheme has the potential to successfully analyze a class of waveguides having locally fine geometry with reduced numerical costs. |
| Key words:
FDTD, Compact 2D FDTD, ADI Technique, Waveguide |
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