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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design of Dual-Band GPS Antenna Using a Single-Layer Coupled-Feed Structure

단층 간접급전구조를 이용한 이중대역 GPS 안테나 설계

  • Hur, Jun (School of Electronic and Electrical Engineering, Hongik University) ;
  • Byun, Gangil (Research Institute of Science and Technology, Hongik University) ;
  • Choo, Hosung (School of Electronic and Electrical Engineering, Hongik University) ;
  • Kay, Youngchul (School of Electronic and Electrical Engineering, Hongik University)
  • 허준 (홍익대학교 전자전기공학부) ;
  • 변강일 (홍익대학교 과학기술연구소) ;
  • 추호성 (홍익대학교 전자전기공학부) ;
  • 계영철 (홍익대학교 전자전기공학부)
  • Received : 2016.01.08
  • Accepted : 2016.08.31
  • Published : 2016.10.07
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Abstract

In this paper, we propose a dual-band GPS antenna using a single-layer coupled-feed structure for improvement of isolation and design complexity. The proposed antenna consists of a central feed patch and outer dual loops, and the loops are electromagnetically fed by the feed patch to induce currents. This feeding network can improve the isolation between antenna elements arranged in small arrays because the magnetic field strength near the antenna is minimized by confining the fields around the dual loops. The isolation characteristics of the proposed antenna are compared with those of the conventional multi-layer patch antenna, and the average field strength and the isolation are improved by 3 dB and 2 dB, respectively, which verifies that the antenna is suitable for small CRPA arrays.

본 논문에서는 배열 개별소자의 격리도 특성과 설계 복잡도 개선을 위한 단층 간접급전구조 이중대역 GPS 안테나를 제안한다. 제안된 안테나는 중앙의 급전패치와 외곽의 이중루프로 구성되며, 이중루프는 급전패치로부터 생성된 전자기장에 의해 전류가 유기된다. 제안된 급전구조는 이중루프 사이에 강한 근접장을 밀집시키므로 소형 배열안테나의 소자간 격리도 특성을 개선할 수 있다. 이러한 특성을 확인하기 위해 일반적인 상용 안테나와 자계분포 및 격리도 특성을 비교하였으며, 근접영역에서의 자계세기 및 격리도가 상용 안테나에 비해 각각 평균 3 dB, 2 dB 개선되어 소형 CRPA 배열안테나에 적합함을 확인하였다.

Keywords

References

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