scholarly journals A Modified AH-FDTD Unconditionally Stable Method Based on High-Order Algorithm

2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Zheng Pan ◽  
Zhikai Fu ◽  
Lihua Shi ◽  
Zhengyu Huang ◽  
Zheng Sun
Keyword(s):  
Signal Reconstruction ◽  
Fdtd Method ◽  
Coarse Grid ◽  
High Order ◽  
Stable Method ◽  
Unconditionally Stable ◽  
Dispersion Error ◽  
Time Frequency ◽  
Simulation Results ◽  
Order Algorithm

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.

An unconditionally stable FDTD method based on wave equation

2008 ◽  
Vol 51 (2) ◽  
pp. 529-532 ◽  
Author(s):  
Hai Lin ◽  
Gaofeng Wang ◽  
Feng Liang
Keyword(s):  
Wave Equation ◽  
Fdtd Method ◽  
Unconditionally Stable

The Unconditionally Stable Associated Hermite FDTD Method With Thin Wire Modeling

2021 ◽  
pp. 1-4
Author(s):  
Zi-An Chen ◽  
Shao-Bin Liu ◽  
Zheng-Yu Huang ◽  
Li-Hua Shi ◽  
Ya-Tong Hou
Keyword(s):  
Fdtd Method ◽  
Thin Wire ◽  
Unconditionally Stable
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