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Measurement of Sonobuoy Transmitting Antenna System for Anti-Submarine Warfare
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  • Measurement of Sonobuoy Transmitting Antenna System for Anti-Submarine Warfare
  • Measurement of Sonobuoy Transmitting Antenna System for Anti-Submarine Warfare
저자명
Min. Kyeong-Sik
간행물명
Journal of the Korea Electromagnetic Engineering Society
권/호정보
2005년|5권 2호|pp.97-103 (7 pages)
발행정보
한국전자파학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

This paper describes the measured results of sonobuoy transmitting antenna system for anti-submarine warfare (ASW). Since radiation pattern and power density depend on impedance matching between transmitting RF part and antenna with termination resistance, design of matching circuit is very important for sonobuoy system performance. Matching circuit is designed by Smith chart using control of L and C. In standing wave ratio(SWR) measurement using Network Analyzer, SWR of antenna with matching circuit observed 1.5 below at the assigned VHF band. It shows very excellent performance comparison with conversional product that is used for the same object. The measured vertical and horizontal radiation patterns are also shown the satisfaction of military specifications. A drop out of sonobuoy system on the sea is happened when angle of elevation direction is over 10 degrees, and it is conformed that it takes less than I second return to original signal level. The required electric power density is $83;mW/m^2$ in the military specification, and measured electric power density is observed over average $110;mW/m^2$ at all frequency bands.