The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of LNA and Mixer for Ku-band Receiver

Ku 밴드 수신단을 위한 저잡음 증폭기 및 주파수 혼합기 설계

  • 최혁재 (중앙대학교 전자전기공학부) ;
  • 고재형 (중앙대학교 전자전기공학부) ;
  • 김군태 (중앙대학교 전자전기공학부) ;
  • 이제광 (중앙대학교 전자전기공학부) ;
  • 김형석 (중앙대학교 전자전기공학부)
  • Received : 2011.10.22
  • Accepted : 2011.11.25
  • Published : 2012.02.01
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Abstract

The Ministry of Information-Communication assigned 18~19GHz frequency band for communication of cabins and platform to link between subway/train and it's station. In this paper, we propose wireless transmission devices which are 2 stage hybrid low noise amplifier of 18GHz band and mixer for 18GHz as well to apply for RF receiver. We designed LNA to be noise matched its 1st stage and gain matched for 2nd stage and mixer using $180^{\circ}$ hybrid coupler to suppress the spurious signal. The transistors of 18 GHz LNA and mixer are NE3210S01 of NEC and KMB-N51-1, respectively. As the result of simulation, we get 19.92dB gain and 2.06dB noise figure with LNA and 8.61dB conversion loss with mixer.

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References

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