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Design of 4×4 Array Synthesis Horn Antenna and Radiated Power Measurement by Magnetron

4×4 배열 합성 혼 안테나 및 고출력 마그네트론에 의한 방사전력 측정

  • 고동옥 (충남대학교 전자전파정보통신공학부) ;
  • 신재윤 (충남대학교 전자전파정보통신공학부) ;
  • 우종명 (충남대학교 전파공학과)
  • Received : 2016.09.12
  • Accepted : 2016.10.18
  • Published : 2016.10.31

Abstract

In this paper, the array synthesis horn antenna was designed and measured a radiation power after connecting magnetron. The proposed antenna was designed on the basis of the $4{\times}4$ array synthesis horn antenna characteristics. For suppressing a back-lobe, 2 step short-stub structures were attached to synthesis horn aperture upper and lower. The designed antenna has FBR(Front to Back Ratio) of 39.7 dB. HPBW(Half Power Beam Width) of the E-plane and the H-plane are $8.86^{\circ}$ and $7.35^{\circ}$ each in the measurement. For measuring a radiation power of array antenna that use a magnetron, the waveguide adaptor was designed and connected magnetron with horn antenna. Also, microstrip line coupler that replace a dielectric material with an air gap was designed for measuring a high power. As a result, average radiation output power of the $4{\times}4$ array synthesis horn antenna that connect a four magnetrons had a 0.063W.

본 논문에서는 배열 합성 혼 안테나를 설계하고 고출력 마그네트론을 연결하여 방사전력을 측정하였다. 제안된 안테나는 $4{\times}4$ 배열 합성 혼 안테나 특성을 바탕으로 후방 방사를 억제시키기 위해 합성 혼 개구면 상, 하단에 2단 단락구조물을 부착하여 빔폭 E-plane $8.86^{\circ}$, H-plane $7.35^{\circ}$, 전후방비 39.7 dB를 얻었다. 또한 배열된 마그네트론을 이용한 배열 혼 안테나의 방사전력을 측정하기 위하여 도파관 어댑터를 설계하여 마그네트론과 혼 안테나를 연결 시켰고 고출력의 파워를 측정하기 위해 중간단에 에어갭을 넣은 마이크로스트립 라인 커플러를 설계하였다. $4{\times}4$ 배열 합성 혼 안테나의 중앙에 4개의 마그네트론을 연결하여 측정한 결과 평균 방사 출력 0.063 W를 얻었다.

Keywords

References

  1. Rahmat-Samii Y., Duan D. W., Giri D. V. and Libelo L. F.(2002), "Conical exampled of reflector antennas for high-power microwave applications," IEEE Transactions on Electromagnetic Compatibility, pp.197-205.
  2. Liang T. Z., Huang W. H., Shao H., Wang K. Y., Li J. W. and Huang H. J.(2012), "Design and near field characteristic of high power microwave dual-reflector antenna," Microwave and Millimeter Wave Technology International Conference, pp.1-4.
  3. Gupta L., Choyal Y., Deshpande P., Maheshwari K. P. and Mittal K. C.(2008), "High Power Microwave generation by relativistic Backward Wave Oscillator," International Conference on Microwave and Millimeter Wave Technology, pp.1355-1358.
  4. Jiang W., Kanbara K., Ohno S., Yuyama T. and Yatsui K.(2014), "Hign power microwave generation by virtual cathode oscillator," IEEE International Power Modulator and High Voltage Conference, pp.312-315.
  5. Lee J. M. and Woo J. M.(2012), "Design of Array Synthesis Horn antenna for High Power Microwave Applications," Progress in Electromagnetics Reaserch Symposium, pp.1196-1198.