Study on Partial Coating Approach for Reducing Cavity Backscattering

Authors

  • Cong-Bo Zhang Institute of Radio Frequency Technology and Software School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China
  • Xiao-Wei Huang Institute of Radio Frequency Technology and Software School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China
  • Xin-Qing Sheng Institute of Radio Frequency Technology and Software School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China

DOI:

https://doi.org/10.13052/2025.ACES.J.400208

Keywords:

Coated cavity, discontinuous Galerkin (DG) method, distance sparse preconditioner (DSP), self-dual integral equation (SDIE)

Abstract

Cavities are strong scattering parts for aircrafts, while coating the interior surface of cavities is a general approach for reducing cavity backscattering. In this paper, the discontinuous Galerkin (DG) method based on the self-dual integral equation (SDIE) is employed to efficiently simulate scattering from partially coated cavities. The distance sparse preconditioner (DSP) is applied to DG-SDIE for speeding up convergence instead of the conventional block-diagonal preconditioner (BDP). An efficient partial coating scheme is presented. The numerical results of straight cavity, S-shaped cavity and complex aircraft cavity demonstrate our coating scheme can achieve similar effect of reducing backscattering by using smaller coated interior surface regions. Useful conclusions about partially coating the cavity are summarized.

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Author Biographies

Cong-Bo Zhang, Institute of Radio Frequency Technology and Software School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China

Cong-Bo Zhang received the B.S. degrees in physics from the Beijing Institute of Technology (BIT), Beijing, China, in 2017. He is currently pursuing the Ph.D. degree in the Institute of Radio Frequency Technology and Software, School of Integrated Circuits and Electronics, BIT. His current research interests include the computational electromagnetics, domain decomposition methods, and EM scattering from complex cavity. Zhang was a recipient of the Student Modeling Contest 2nd Prize at the 2021 International Applied Computational Electromagnetics Society (ACES-China) Symposium.

Xiao-Wei Huang, Institute of Radio Frequency Technology and Software School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China

Xiao-Wei Huang received the B.S. and Ph.D. degrees in electronic science and technology from the Beijing Institute of Technology (BIT), Beijing, China, in 2017 and 2022, respectively. Since 2022, he has been a TeLi Post-Doctoral Researcher with the Institute of Radio Frequency Technology and Software, School of Integrated Circuits and Electronics, BIT. His current research interests include computational electromagnetics, EM wave-plasma interactions, domain decomposition methods, and fast direct solvers for integral equations. Huang was a recipient of the Best Student Paper Award (1st place) at the 2018 International Applied Computational Electromagnetics Society (ACES-China) Symposium, and a recipient of the 2022 China National Postdoctoral Program for Innovative Talents.

Xin-Qing Sheng, Institute of Radio Frequency Technology and Software School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China

Xin-Qing Sheng is a Chair Professor of the Beijing Institute of Technology. Sheng has authored and coauthored over 180 papers in referred journals, and 10 books. Sheng has authored the software of SINOCOM for electromagnetic simulation. His research interests include computational electromagnetics, scattering and antenna analysis, electromagnetic compatibility, microwave imaging. Sheng is a recipient of the 2001 One Hundred Talents Program awarded by the Chinese Academy of Sciences, the 2004 Cheung Kong Scholar Program awarded by the Ministry of Education of China, and the first recipient of the first prize of Beijing Science and Technology Awards in 2009.

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Published

2025-02-28

How to Cite

[1]
C.-B. . Zhang, X.-W. . Huang, and X.-Q. . Sheng, “Study on Partial Coating Approach for Reducing Cavity Backscattering”, ACES Journal, vol. 40, no. 02, pp. 148–155, Feb. 2025.

Issue

2025: Vol 40 Iss 2

Section

Novel CEM methods & applications

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