a modified ah-fdtd unconditionally stable method based on high-order algorithm

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ID: 165072
2017
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Abstract
The unconditionally stable method, Associated-Hermite FDTD, has attracted more and more attentions in computational electromagnetic for its time-frequency compact property. Because of the fewer orders of AH basis needed in signal reconstruction, the computational efficiency can be improved further. In order to further improve the accuracy of the traditional AH-FDTD, a high-order algorithm is introduced. Using this method, the dispersion error induced by the space grid can be reduced, which makes it possible to set coarser grid. The simulation results show that, on the condition of coarse grid, the waveforms obtained from the proposed method are matched well with the analytic result, and the accuracy of the proposed method is higher than the traditional AH-FDTD. And the efficiency of the proposed method is higher than the traditional FDTD method in analysing 2D waveguide problems with fine-structure.
Reference Key
pan2017mathematicala Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Zheng Pan;Zhikai Fu;Lihua Shi;Zhengyu Huang;Zheng Sun
Journal journal of power sources
Year 2017
DOI
10.1155/2017/3595947
URL
http://dx.doi.org/10.1155/2017/3595947
Keywords
civil engineering (general)mathematics engineering (general)

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