한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제25권2호
  • /
  • Pages.135-143
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  • 2022
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  • 1598-9127(pISSN)
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  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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기저선이 최적화된 간섭계 레이다 고도계용 도파관 슬롯 배열 안테나 설계

Design of Optimized Two Baseline Waveguide Slot Array Antenna for Interferometric Radar Altimeter

  • 윤나내 (한화시스템(주) 특수레이다팀) ;
  • 김지형 (한화시스템(주) 특수레이다팀) ;
  • 김진수 (엘트로닉스(주) 초고주파부품 연구소) ;
  • 장종훈 (국방과학연구소 미사일연구원)
  • Yoon, Nanae (Department of Specific Radar, Hanwha Systems) ;
  • Kim, Jihyung (Department of Specific Radar, Hanwha Systems) ;
  • Kim, Jinsu (Department of Millimeter Microwave Device, Eltronix) ;
  • Jang, Jonghun (The 1st Research and Development Institute, Agency for Defense Development)
  • 투고 : 2021.11.09
  • 심사 : 2022.03.21
  • 발행 : 2022.04.05
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초록

In this paper, the compact waveguide slot array antenna for interferometric radar altimeter is proposed. The proposed antenna structure consist of corrugation structure which is applied between each channel to improve isolation, three-channel waveguide slot array antenna and feeder. In addition, to reduce the occurrence of phase ambiguity, the baseline spacing of the three-channel antenna is analyzed and the results are applied to the design. For compact design, reduced height and SMP connector structure are used and the dip brazing method which is the conjugation method after dipping to flux is used for the fabrication of the lightweight antenna. The measurement result of the proposed antenna shows less than 1.41 : 1 (VSWR) and 48.3 dBc (isolation). The antenna gain is higher than 20.2 dBi and the side lobe levels are lower than 18.8 dB (vertical plane) and 10.0 dB (horizontal plane).

키워드

참고문헌

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