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

  • 제19권2호
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  • Pages.223-230
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  • 2008
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  • 1226-3133(pISSN)
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  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
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Magneto-Dielectric Material을 이용한 소형 Composite Right/Left-Handed Transmission Line Metamaterial 안테나

A Small Composite Right/Left-Handed Transmission Line Metamaterial Antenna Using a Magneto-Dielectric Material

  • 장경덕 (포항공과대학교 전자전기공학과) ;
  • 김재희 (포항공과대학교 전자전기공학과) ;
  • 김기호 ((주)이엠따블유 안테나) ;
  • 성원모 ((주)이엠따블유 안테나) ;
  • 박위상 (포항공과대학교 전자전기공학과)
  • Jang, Kyung-Duk (Department of Electronic and Electrical Engineering, Pohang University of Science and Technology) ;
  • Kim, Jae-Hee (Department of Electronic and Electrical Engineering, Pohang University of Science and Technology) ;
  • Kim, Gi-Ho (E.M.W. Antenna Co. Ltd.) ;
  • Seong, Won-Mo (E.M.W. Antenna Co. Ltd.) ;
  • Park, Wee-Sang (Department of Electronic and Electrical Engineering, Pohang University of Science and Technology)
  • 발행 : 2008.02.29
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초록

본 논문에서는 magneto-dielectric material을 이용하여 CRLH-TL 안테나를 소형화 시키는 방법을 제안하였다. 제안된 안테나는 patch와 via를 이용하여 구현한 mushroom 구조의 CRLH-TL 안테나에 SRR을 이용한 magneto-dielectric material을 장하한 구조이다. 시뮬레이션을 통해 SRR의 동작 특성을 살펴보았고, SRR을 이용하여 기판의 투자율 값을 증가시킬 수 있음을 확인하였다. 또한, magneto-dielectric material을 이용함으로써 CRLH-TL 안테나의 공진 주파수를 감소시킬 수 있음을 확인하였다. -1차 공진 모드에서 7.13 %, 0차 공진 모드에서 23.9 %의 주파수 감소 효과를 얻을 수 있었다. 0차 공진 모드에서 동작하는 안테나를 제작하여 반사 손실과 방사 패턴을 살펴보았다. 제작된 안테나의 동작 주파수는 1.888 GHz이며, 측정된 대역폭은 0.48 %이고, 이득은 0.534 dBi, 효율은 51.7 %이다.

A CRLH-TL based compact metamaterial antenna on a magneto-dielectric material is proposed. The proposed antenna is composed of two patches and vias, which is loaded by a magneto-dielectric material constructed by SRRs. The characteristic of SRRs is studied, and the size reduction of the antenna by using the magneto-dielectric material is confirmed. The simulated resonant frequency of the antenna has showed a decrease of 7.13 % at - 1st-order resonant mode, and 23.9 % at zeroth-order resonant mode. A zeroth-order resonant antenna is fabricated and measured, which has a resonant frequency of 1.888 GHz, a bandwidth of 0.48 %, a gain of 0.534 dBi, and an efficiency of 51.7 %.

키워드

참고문헌

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