Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Radiation Pattern in Rectangular Microstrip Patch Antenna with Anisotropy Substrates and Superstrate

이방성 매질의 기판과 덮개층을 갖는 마이크로스트립 패치 안테나의 방사패턴

  • Yoon, Joong-Han (IT Advanced Technology Research Center, Inha Univ.) ;
  • Lee, Hwa-Choon (Depart. of Information and Communication Engineering, Chodang University) ;
  • Kwak, Kyung-Sup (The School of Information and Communication Engineering, Inha Univ.)
  • 윤중한 (인하대학교 IT 신기술연구소) ;
  • 이화춘 (초당대학교 정보통신공학과) ;
  • 곽경섭 (인하대학교 정보통신공학부)
  • Published : 2003.07.01
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Abstract

In this paper, radiation pattern of rectangular microstrip patch antenna with anisotropy substrates and superstrate is studied by using a rigorous full-wave approach and a moment method calculation. Dyadic Green's function is derived for selected anisotropy material by constitutive relation. From these results, integral equations of electric fields are formulated. The electric field integral equations are discretized into the matrix form by applying Galerkin's moment method and then the current coefficients are obtained.. After solving the current coefficients, the far-zone electric field in spherical coordinates can be obtained by using the stationary phase method. To verify the validity of numerical result, we compare our result with existing one and get a good agreement between them. From the numerical results, the radiation patterns for variation of uniaxial superstrate thickness, anisotropy ratio of substrate and superstrate layer are presented and analyzed.

본 논문에서는 이방성 매질의 덮개층과 기판을 갖는 사각 마이크로스트립 패치 안테나의 방사패턴을 full-wave approach와 모멘트 계산법을 이용하여 연구하였다. 이방성 매질내의 구성관계식을 통하여 제안된 구조에서의 파수영역 다이애딕 그린 함수를 유도하였으며 이 결과로부터 전계 적분 방정식을 수식화하였다. 갤러킨 모멘트법을 사용하여 전계 적분 방정식을 이산화 하여 전류밀도의 계수를 구한 후에 구좌표계의 원거리 전계는 고정 위상법(stationary phase method)을 이용하여 얻을 수 있다. 전사모의 실험 결과의 타당성을 검증하기 위해서 기존의 결과와 비교하여 일치된 결과를 얻었으며 이방성 덮개층의 두께 변화 그리고 기판과 덮개층의 이방성 비에 따른 방사패턴이 제시되고 분석되었다.

Keywords

References

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