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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Metascreen Analysis Using Generalized Sheet Transition Conditions(GSTCs) and Babinet's Principle

Babinet의 원리와 Generalized Sheet Transition Conditions(GSTCs)를 이용한 메타스크린 해석

  • Lee, Sun-Gyu (Department of Electronic and Electrical Engineering, Hongik University) ;
  • Lee, Jeong-Hae (Department of Electronic and Electrical Engineering, Hongik University)
  • 이선규 (홍익대학교 전자전기공학과) ;
  • 이정해 (홍익대학교 전자전기공학과)
  • Received : 2018.04.03
  • Accepted : 2018.09.17
  • Published : 2018.09.30
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Abstract

Using Babinet's principle and generalized sheet transition conditions(GSTCs), an analysis method for metascreens is proposed. First, the relation of a complementary screen between a metafilm and metascreen with the same dimensions was confirmed using Babinet's principle. These properties were verified by comparing the reflection coefficient of the patch and the transmission coefficient of the mesh. The patch and mesh are the basic structures of metafilms and metascreens, respectively. Based on these findings, it is also confirmed that the reflection coefficient of the patch surface calculated by GSTCs has the same value as the transmission coefficient of the mesh surface. It is expected that the proposed analysis methods can be applied to the magnitude, phase, and polarization of electromagnetic waves in the various unit structures of a given metasurface.

Babinet의 원리와 generalized sheet transition conditions(GSTCs)를 이용한 메타스크린 해석 방법을 제안하였다. 먼저, Babinet의 원리로부터 동일한 치수를 갖는 메타필름과 메타스크린의 상보스크린 관계를 확인하였다. 이러한 특성은 메타 필름의 가장 기본구조인 패치표면의 반사계수와 메타스크린의 가장 기본구조인 메쉬표면의 투과계수 결과로부터 검증하였다. 또한, GSTCs에 의해 계산된 패치표면의 반사계수와 메쉬표면의 투과계수의 관계에도 동일하게 적용됨을 확인하였다. 이를 통해 분극률 밀도(polarizability density)를 이용한 메타필름 설계가 메타스크린 설계에 이용될 수 있음을 보였다. 제안된 방법은 전자기파의 크기, 위상, 편파 등의 제어가 요구되는 다양한 메타표면 단위 구조 분석에 적용 가능할 것으로 예상된다.

Keywords

References

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