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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Gain Enhancement of a Horn Antenna with Latticed Aperture

격자로 분할된 개구면을 갖는 혼 안테나의 이득 개선

  • Hur, Moon-Man (Department of Electronic Engineering, Dongguk University) ;
  • Lee, In-Jae (Department of Electronic Engineering, Dongguk University) ;
  • Lim, Gye-Jae (Division of Electronic Information Engineering, Kwandong University) ;
  • Yoon, Hyun-Bo (Department of Electronic Engineering, Dongguk University)
  • 허문만 (동국대학교 전자공학과) ;
  • 이인재 (동국대학교 전자공학과) ;
  • 임계재 (관동대학교 전자정보통신공학부) ;
  • 윤현보 (동국대학교 전자공학과)
  • Published : 2006.10.31
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Abstract

In this paper, the gain of the square hem antenna is enhanced with $3{\times}3$ latticed aperture. In order to get the uniform field distribution on the aperture, the different thicknesses of dielectric plates for the phase compensation are inserted into the center and the edge of the aperture respectively. The proposed horn antenna is designed at 12.5 GHz band, and then the analysis of the field distribution on the aperture is performed by using FDTD method. The radiation pattern is also calculated from the analysis. Based on the measured data, it is verified that the gain of a horn antenna with latticed aperture is 18 dBi and this is 2 dB gain enhancement compare with a normal horn antenna without latticed aperture.

정사각형 혼 안테나의 개구면을 $3{\times}3$의 도체 격자로 분할하여 이득을 개선하였다. 개구면상의 균일한 필드 분포를 얻기 위해서, 중앙과 가장자리의 격자에 두께가 서로 다른 유전체 판을 삽입하여 위상을 보상하였다. 12.5GHz 대역의 혼 안테나를 설계하여 FDTD 방법으로 개구면의 필드 분포를 해석하였고, 이로부터 복사 패턴을 계산하였다. 실제 측정한 결과, 격자형 개구면을 갖는 안테나의 이득은 18 dBi로 일반적인 혼에 비해 이득이 약 2 dB 개선됨을 확인하였다.

Keywords

References

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