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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Isolation Improvement in Vivaldi Antennas Using DSRR

DSRR을 이용한 비발디 안테나 소자 간 격리도 향상

  • 윤주호 (성균관대학교 전자전기컴퓨터공학과) ;
  • 박대성 (한화시스템) ;
  • 장동혁 (한화시스템) ;
  • 황금철 (성균관대학교 전자전기컴퓨터공학과)
  • Received : 2018.07.25
  • Accepted : 2018.10.02
  • Published : 2018.10.31
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Abstract

In this paper, a double split-ring resonator(DSRR) is proposed to improve the isolation between Vivaldi antenna elements. The DSRR was designed using a unit cell simulation and applied to a $1{\times}2$ Vivaldi antenna array to confirm the improvement in the isolation. The unit cell size of the proposed DSRR is $5mm{\times}5mm{\times}1.52mm$ and six unit cells are used. To verify the performance of the proposed DSRR, $1{\times}2$ Vivaldi antenna arrays with and without the DSRR were fabricated and measured. The results show an isolation improvement of 20 dB in the Vivaldi antennas with the DSRR when compared to the Vivaldi antennas without the DSRR.

본 논문에서는 비발디 안테나 소자 간 격리도 향상을 위해, 메타구조 기반 흡수체의 한 종류인 double split ring resonator(DSRR)를 제안하였다. Unitcell 모의실험을 통하여 흡수체로 동작하는 DSRR을 설계하였으며, DSRR을 통한 격리도 향상을 확인하기 위하여 $1{\times}2$ 비발디 안테나에 적용하였다. 제안된 DSRR의 unitcell 크기는 $5mm{\times}5mm{\times}1.52mm$이며, 총 6개의 unitcell이 사용되었다. 제안된 DSRR의 성능 검증을 위하여 DSRR 적용 유무에 따른 $1{\times}2$ 비발디 안테나를 제작 및 측정하였으며, 측정 결과 DSRR이 적용된 비발디 안테나는 DSRR이 적용되지 않은 비발디 안테나에 비해 20 dB의 격리도 향상을 보였다.

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References

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