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 W-Band Cassegrain Antenna for Beam Steering

빔 조향을 위한 W-대역 카세그레인 안테나 설계

  • Park, Myung-Hoon (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Han, Jun-Yong (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Lee, Taek-Kyung (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Lee, Jae-Wook (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Oh, Gyung-Hyun (Hanwha Thales) ;
  • Song, Sung-Chan (Hanwha Thales)
  • 박명훈 (한국항공대학교 항공전자정보공학부) ;
  • 한준용 (한국항공대학교 항공전자정보공학부) ;
  • 이택경 (한국항공대학교 항공전자정보공학부) ;
  • 이재욱 (한국항공대학교 항공전자정보공학부) ;
  • 오경현 (한화탈레스) ;
  • 송성찬 (한화탈레스)
  • Published : 2016.04.30
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Abstract

In this paper, for the mechanical beam steering of the Cassegrain antenna, the steering performances of the main reflector tilting method are characterized, and the Cassegrain antenna for the antenna rotating method is designed and its performances are measured. In the Cassegrain antenna operating at W-band, the changes of characteristics due to changes in the sizes of the main/sub-reflectors and other structural changes are analyzed to obtain the structural variables satisfying the performance goal. The manufactured antenna in W-band shows the measured gain of 42.08 dBi, 3 dB beamwidth of $1.32^{\circ}$, $1.14^{\circ}$ and the return loss($S_{11}$) of -23.58 dB at the center frequency of 94 GHz.

본 논문에서는 카세그레인 안테나에서 기계적인 빔 조향을 위해 주반사판 기울임 방식에서 반사판의 기울임에 의한 빔 조향 특성을 분석하였으며, 안테나 회전방식에서 사용하기 위한 안테나를 설계하고, 그 성능을 측정하였다. 설계된 카세그레인 안테나는 W-대역에서 동작하며, 주반사판 및 부반사판의 크기 및 구조변수에 따른 안테나의 특성 변화를 분석하여 목표성능을 만족하는 설계변수를 도출하였다. 제작된 안테나는 W-대역에서 이득은 42.08 dBi, 빔폭은 E,H-plane에서 각각 $1.32^{\circ}$, $1.14^{\circ}$이며, 반사손실($S_{11}$)의 경우 중심주파수인 94 GHz에서 -23.58 dB이다.

Keywords

References

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