The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Modified SDIE MLFMM Method for Inhomogeneous Impedance Material Containing PEC or PMC Region

PEC 또는 PMC 영역을 포함하는 불균일 임피던스 매질의 산란 해석을 위한 수정된 SDIE MLFMM 방법

  • Lee, Hyunsoo (Department of Electronic Engineering, Inha University) ;
  • Koh, Il-Suek (Department of Electronic Engineering, Inha University) ;
  • Yoo, Ji Hee (Agency for Defense Development)
  • 이현수 (인하대학교 전자공학과) ;
  • 고일석 (인하대학교 전자공학과) ;
  • 유지희 (국방과학연구소 3기술연구본부 표적정보기술부)
  • Received : 2018.08.17
  • Accepted : 2018.10.08
  • Published : 2018.10.31
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Abstract

A coated perfect electric conductor(PEC) interface to reduce scattered fields can be efficiently modeled by using the impedance boundary condition. The self-dual integral equation(SDIE) proposed by Yan et al. may be an efficient multi-level fast multipole method (MLFMM) formulation for the impedance object. This equation can be applied to an inhomogeneous impedance material, but its accuracy can be degenerated when the material contains a PEC or perfect magnetic conductor(PMC) region. In this paper, we modify the original SDIE formulation for an inhomogeneous object containing a PEC or PMC region and numerically verify its accuracy.

산란파 감소 등의 목적으로 PEC 상에 코팅된 매질은 임피던스 경계조건을 사용하여 효과적으로 모델링되며, Yan이 제안한 SDIE 방법을 이용하여 임피던스 경계조건 MLFMM 방법을 쉽게 구현할 수 있다. SDIE MLFMM 방법은 매질의 임피던스가 불균일한 경우에도 적용될 수 있으나, PEC 또는 PMC 영역을 포함할 경우에는 결과가 부정확해질 수 있다. 본 논문에서는 Yan의 SDIE MLFMM 방법을 변형하여 PEC 또는 PMC 영역을 포함하는 불균일 임피던스 매질을 효율적으로 해석할 수 있는 방법을 제안하고, 그 정확도를 시뮬레이션으로 검증한다.

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References

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