Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Design and Implementation of Frequency Down Converter for Satellite Communication

위성 통신용 주파수 하향 변환기의 설계 및 제작

  • 이승대 (남서울대학교 전자공학과) ;
  • 나상엽 (남서울대학교 컴퓨터학과)
  • Received : 2011.12.16
  • Accepted : 2012.02.10
  • Published : 2012.02.29
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Abstract

In this paper, design and implementation of frequency down converter based on LC filter technic. Single frequency down converter, designed a low-noise amplifier, mixer, IF amplifier, LC filter was configured. And it is composed of DC block capacitors and RF bypass capacitor. LC filter, replace it with the IC reduced the power and realized low cost. The gain of single down converter is about 10dBm and realized by 18MHz bandwidth at 70MHz band.

본 논문에서는 LC 필터 기술을 기반으로 하는 주파수 단일 하향 변환기를 설계 및 제작하였다. 설계한 단일 하향 변환기는 저잡음 증폭기, 혼합기 IF 증폭기, LC 필터로 구성하였으며 DC block 커패시터와 RF bypass 커패시터로 구성된다. 설계한 변환기는 IC를 LC 필터로 대치하여 전력을 감소시키고 제작비용을 낮추어주는 효과를 보인다. 본 논문에서 설계, 제작한 단일 하향 변환기는 이득이 약 10dBm이고 70MHz에서 18MHz의 대역폭을 실현하였다.

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References

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