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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Small Mu-Zero Zeroth Order Resonance Antenna with Parasitic Patch

기생패치를 이용한 소형 뮤-제로 영차공진 안테나

  • Um, Kwi Seob (Department of Electronic Information and Communication Engineering, Hongik University) ;
  • Lee, Chang-Hyun (Department of Electronic Information and Communication Engineering, Hongik University) ;
  • Lee, Jae-Gon (Department of Electronic Information and Communication Engineering, Hongik University) ;
  • Lee, Jeong-Hae (Department of Electronic Information and Communication Engineering, Hongik University)
  • 엄귀섭 (홍익대학교 전자정보통신공학과) ;
  • 이창현 (홍익대학교 전자정보통신공학과) ;
  • 이재곤 (홍익대학교 전자정보통신공학과) ;
  • 이정해 (홍익대학교 전자정보통신공학과)
  • Received : 2015.12.16
  • Accepted : 2016.03.22
  • Published : 2016.04.30
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Abstract

In this paper, a small mu-zero zeroth order resonance(ZOR) antenna based on meta structure is proposed using parasitic patch at 5.8 GHz. The mu-zero ZOR antenna is designed by utilizing the resonance of series inductance and capacitance of mu-negative transmission line and its size can be further reduced by a simple parasitic patch. The parasitic patch can increase series capacitance of mu-negative transmission line related to a resonant frequency. We have simulated and optimized dimension of the parasitic patch using Ansys commercial simulator(HFSS). As a result, the antenna has the following characteristics: kr of 0.59, efficiency of 92 %, and gain of 6.57 dBi. Also, its size is reduced by 24 % compared to a conventional mu-zero ZOR antenna. The measured results are in good agreement with the simulated results.

본 논문에서는 5.8 GHz에서 동작하는 기생패치를 이용한 소형 메타구조 기반의 뮤-제로 영차공진 안테나를 제안한다. 제안된 안테나는 뮤-네거티브(MNG: Mu-negative) 전송선로의 직렬 인덕턴스와 커패시턴스를 사용하는 뮤-제로 영차공진 안테나이며, 간단한 구조의 기생패치를 추가함으로써 직렬 커패시턴스를 증가시켜 소형화 하였다. 추가된 기생패치는 기존의 직렬 커패시턴스에 추가적인 병렬로 커패시턴스를 만들어 공진 주파수를 결정하는 직렬 커패시턴스를 등가적으로 증가시킨다. 기생패치는 HFSS를 이용한 모의실험을 통하여 최적화되었다. 제안된 안테나는 0.59의 kr값을 가지며, 기존 뮤-제로 영차공진 안테나 크기 대비 24 % 소형화 되었으며, 92 %의 효율과 6.57 dBi의 이득을 보였다. 최종 설계된 안테나는 제작 및 측정되었으며, 측정 결과는 모의실험 결과와 잘 일치함을 확인하였다.

Keywords

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