한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
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X-대역 레이더용 SSPA 모듈 설계 및 제작

Design and fabrication of SSPA module in X-band for Radar

  • 양성수 (동신대학교 정보통신공학과)
  • Yang, Seong-Soo (Dept. Information & Communication Engineering, DongShin University)
  • 투고 : 2018.09.09
  • 심사 : 2018.10.15
  • 발행 : 2018.10.31
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초록

본 논문에서는 GaN MMIC를 활용하여 X-band 레이더용 SSPA모듈을 설계 및 제작하였다. SSPA의 구동 증폭기 단은 Gain Loss를 감안하여 GaN MMIC를 2단으로 구성하였다. 그리고 고출력 SSPA 모듈 구성을 위해 전력증폭단을 4단으로 설계함에 따라 전력분배기와 전력합성기는 4way 방식으로 설계하였다. 제작된 전력 분배기는 -3.0dB 이상의 손실을 나타내었으며, 전력합성기는 -0.2dB의 입출력 손실과 각 포트 간 위상차는 평균 $2^{\circ}$로 양호한 특성을 보이고 있다. 제작한 SSPA모듈 실험 측정 결과 9~10GHz 주파수 대역에서의 Gain은 48.0dB 이상인 것을 확인하였으며, P(sat)=88.3W (49.46dBm) 이상, PAE=30.3% 이상임을 확인하였다. 본 논문에서 제작된 X-Band SSPA 모듈 성능 확인과 전력분배기/합성기 개선을 통해 향후 SSPA모듈에 대한 RF성능 개선에 많이 활용될 수 있을 것이다.

In this paper, SSPA Module for X-band radar was designed and fabricated by using GaN MMIC. For the purpose of configuring the high power SSPA module, the drive steamers are composed of 2-layers of GaN MMIC with considering Gain Loss. In addition, the power divider and power combiner used a 4way approach by designing a 4-stage power amplifier. The power divider has a loss of -3.0dB or more, and the I/O has a loss of -0.2dB in the power combiner and the phase difference between the ports are good at $2^{\circ}$ on average. The fabricated SSPA module got the measurement results that satisfy a Gain 48dB, P(sat)=88.3W(49.46 dBm), PAE=30.3% or more efficiency in condition of frequency range 9~10GHz. The fabricated X-Band SSPA module can be applied in RF performance improvement for SSPA module whit improvement of power divider/combiner.

키워드

참고문헌

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