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

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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The Study on Advanced Frequency Up Converter

개선된 주파수 상향 변환기에 관한 연구

  • Lee, Seung-Dae (Department of Electronic Engineering, Namseoul University) ;
  • Shin, Hyun-Yong (Department of Electronic Engineering, Namseoul University)
  • 이승대 (남서울대학교 전자공학과) ;
  • 신현용 (남서울대학교 전자공학과)
  • Received : 2014.01.13
  • Accepted : 2014.05.08
  • Published : 2014.05.31
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Abstract

This paper suggests a power level controllable frequency up-converter which is designed and fabricated using both the filtering technology consisted with only passive devices and a multi-level digital attenuator. The suggested frequency up-converter simultaneously realizes the low power consumption and the low cost model. Because of the possibility for controlling power levels, it is possible to use the suggested frequency up-converter for wide spectral range. According to the experimental results, the average gain value of 0.75dB is obtained for the bandwidth of 160MHz at the center frequency of 1,200MHz. Especially, it is confirmed that the power level can be controlled from 10 to -21.5dBm through the digital attenuator.

본 논문에서는 수동소자를 이용한 필터 설계기술을 기반으로 하고 디지털 계단형 감쇠기를 이용하여 전력레벨 조절이 가능한 주파수 상향 변환기를 설계 및 제작하였다. 제작한 주파수 변환기는 저전력 및 저가의 제작비용을 실현하였으며 전력레벨의 조절이 가능하여 광범위한 영역에서 사용이 가능하다. 실험 결과, 중심 주파수 1, 200MHz에서 160MHz의 대역을 확보하였으며 이득은 평균 0.75dB임을 확인하였다. 또한, 디지털 감쇠기를 통해 전력레벨을 10~-21.5dBm까지 조절이 가능함을 확인하였다.

Keywords

References

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