The Journal of The Korea Institute of Intelligent Transport Systems (한국ITS학회 논문지)

The Korea Institute of Intelligent Transport Systems (한국ITS학회)
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A Low-loss Phase Shifter with Harmonics Suppression Using Compact Hybrid Coupler

소형 하이브리드 커플러를 이용한 고조파가 억압된 저손실 위상 변위기

  • 윤기철 (광운대학교 RFIC 연구센터) ;
  • 지승한 (대림대학교 메카트로닉스과) ;
  • 이종철 (광운대학교 전자융합공학과)
  • Received : 2015.09.30
  • Accepted : 2015.11.03
  • Published : 2015.12.31
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Abstract

In this paper, a compact low-loss reflector-type phase shifter with harmonic suppression using meander T-shaped branch-line coupler is suggested. The compact coupler for the phase shifter has a size of $22.2{\times}14.9mm^2$ while a conventional branch coupler has a size of $32.6{\times}27.8mm^2$. The phase shifter shows insertion losses of 0.19-0.28 dB at the center frequency of 2.1 GHz, and a measured maximum phase shift of $137^{\circ}$.

본 논문은 T 형태의 미엔더 선로를 적용한 브랜치 라인 커플러를 이용하여 고조파가 억압된 소형 저손실의 반사기 형태인 위상 변위기에 대해 제안을 한다. 위상 변위기의 소형 커플러는 $22.2{\times}14.9mm^2$의 크기를 갖고 있으며, 기존의 브랜치 커플러는 $32.6{\times}27.8mm^2$의 크기를 나타낸다. 본 논문에서 제안된 위상 변위기는 2.1 GHz의 중심 주파수에서 삽입손실 0.19~0.28 dB, 그리고 $137^{\circ}$의 최대 위상 변위를 보여주고 있다.

Keywords

References

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