Fast Wideband Electromagnetic Analysis Using the Interpolation Technique and Fast Generating Matrix Method

Authors

  • Wei Bin Kong 1 College of Information Engineering Yancheng Optical Fiber Sensing and Application Engineering Technology Research Center Yancheng Institute of Technology, Jiangsu Yancheng, 224051, China , 2 State Key Laboratory of Millimeter Waves Southeast University, Jiangsu Nanjing, 210096, China
  • Xiao Fang Yang College of Information Engineering Yancheng Optical Fiber Sensing and Application Engineering Technology Research Center Yancheng Institute of Technology, Jiangsu Yancheng, 224051, China
  • Feng Zhou College of Information Engineering Yancheng Optical Fiber Sensing and Application Engineering Technology Research Center Yancheng Institute of Technology, Jiangsu Yancheng, 224051, China
  • Jia Ye Xie Industrial Center Nanjing Institute of Technology, Jiangsu Nanjing, 211167, China
  • Ru Gang Wang College of Information Engineering Yancheng Optical Fiber Sensing and Application Engineering Technology Research Center Yancheng Institute of Technology, Jiangsu Yancheng, 224051, China
  • Kai Lai Zheng College of Electronic and Optical Engineering & College of Microelectronics Nanjing University of Posts and Telecommunications, Jiangsu Nanjing, 210023, China

Keywords:

Electromagnetic scattering, FGG-FG-FFT, frequency sweeps, interpolation technique, near matrix

Abstract

A fast wideband electromagnetic scattering analysis method based on the interpolation technique and fast generating matrix method is proposed. By factoring out the dominant phase term, the matrix element is transformed into the element which fluctuates slowly with frequency. The matrices over the frequency band are fast generated via interpolation technique. Instead of employing different meshing grids at different frequencies, this new method requires only one mesh generated at the highest frequency of the given bandwidth. This approach not only saves much work in geometrical modeling but also leads to less time for wideband scattering problem. The proposed algorithm is implemented in the platform of FGG-FG-FFT, which is not sensitive to both the grid spacing and the expansion order. A method for fast generating matrix also is introduced to speed up filling the near matrix. Consequently, it can not only reduce the impedance matrix filling time in the whole frequency band but also accelerate the matrix filling process at frequency interpolation sampling points. Several numerical examples are provided to demonstrate the correctness and the efficiency of the proposed method for the wideband scattering analysis.

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Published

2021-07-18

How to Cite

[1]
Wei Bin Kong, Xiao Fang Yang, Feng Zhou, Jia Ye Xie, Ru Gang Wang, and Kai Lai Zheng, “Fast Wideband Electromagnetic Analysis Using the Interpolation Technique and Fast Generating Matrix Method”, ACES Journal, vol. 33, no. 12, pp. 1360–1367, Jul. 2021.

Issue

2018: Vol 33 Iss 12

Section

Articles