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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Design for Mutual Coupling Suppression between Elements in Planar Array Antenna

평면 배열 안테나의 소자간 상호 결합 억압 설계

  • Min Kyeong-Sik (Dept. of Radio Sciences & Engineering, Korea Maritime University) ;
  • Kim Dong-Jin (Dept. of Radio Sciences & Engineering, Korea Maritime University) ;
  • Park Chul-Keun (Dept. of Radio Sciences & Enginering, Korea Maritime University) ;
  • Moon Young-Min (Samsung Advanced Institute of Technology) ;
  • Kim Young-Eil (Samsung Advanced Institute of Technology)
  • Published : 2005.08.01
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Abstract

This paper presents a novel method of mutual coupling suppression between antenna elements for performance improvement in planar array antenna system. Two miniature patch antenna elements satisfied IEEE 802.1 la($5.75\~5.35\;GHz,\;5.75\~5.85\;GHz$) are used for this research, they are arrayed by half wave length interval. It is observed about -20 dB mutual coupling between each antenna element at center frequency. To suppress mutual coupling, the arrayed antennas with a reversed 'U' structure are observed below -30 dB mutual coupling at IEEE 802.1la band.

본 논문은 평면 배열 안테나의 성능 향상을 위한 안테나 소자간의 새로운 상호 결합 억제 방법을 제안하고 있다. 연구에 사용된 IEEE 802.1la($5.15\~5.35 GHz,\;5.75\~5.85\;GHz$)를 만족하는 두 개의 안테나 소자가 반파장 간격으로 배열되어 있을 때, 안테나 소자간의 상호 결합은 -20 dB 정도였으나 본 논문에서 제안된 뒤집힌 U자형 구조물을 안테나 단 사이에 삽입한 경우, 5 GHz전 대역에서 상호 결합이 -30 dB 이하로 현저히 억압되는 특성을 나타내었다. 본 논문에서 제안한 역 U자형 구조물은 안테나간 상호 결합을 개선할 뿐 아니라, 기생 안테나 성분으로 동작하여 안테나 이득도 2 dBi 이상 개선되는 특성을 나타내었다.

Keywords

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