The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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An Unequal Power Divider with Adjustable Dividing Ratio

가변 분배 비율 비대칭 전력 분배기

  • Lim, Jong-Sik (Department of Electrical and Communication System Engineering, Soonchunhyang University) ;
  • Oh, Seong-Min (Department of Electrical and Communication System Engineering, Soonchunhyang University) ;
  • Koo, Jae-Jin (Department of Electrical and Communication System Engineering, Soonchunhyang University) ;
  • Jeong, Yong-Chae (Department of Electronic and Information Engineering, Chonbuk National University) ;
  • Ahn, Dal (Department of Electrical and Communication System Engineering, Soonchunhyang University)
  • 임종식 (순천향대학교 전기통신시스템공학과) ;
  • 오성민 (순천향대학교 전기통신시스템공학과) ;
  • 구재진 (순천향대학교 전기통신시스템공학과) ;
  • 정용채 (전북대학교 전자정보공학부) ;
  • 안달 (순천향대학교 전기통신시스템공학과)
  • Published : 2007.05.31
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Abstract

In this paper, an unequal 1:N Wilkinson power divider with adjustable dividing ratio is proposed. The proposed unequal power divider is composed of basic Wilkinson structure. It consists of rectangular-shaped defected ground structure (DGS), isolated island pattern in DGS, and varactor diodes of which capacitance depends on bias voltage. The characteristic impedance value of microstrip line having DGS goes up and down by controlling bias voltage for diodes, and consequently the power dividing ratio(N) is adjusted. The obtained N from measurement is $2.59{\sim}10.4$ which mean the proposed divider has adjustable unequal dividing ratio.

본 논문에서는 분배 비율을 조절할 수 있는 1:N 비대칭 월킨슨 전력 분배기를 제안한다. 제안된 비대칭 전력분배기는 월킨슨 구조에 기인하고 있다. 제안한 분배기는 사각형 형태의 결함 접지 구조와 결함 접지 구조 안에 위치한 격리 패턴 구조, 그리고 바이어스 전압에 따라 캐패시턴스가 변하는 버랙터 다이오드를 지니고 있다. 결함 접지 구조를 지니는 마이크로스트립 전송 선로의 특성 임피던스는 버랙터 다이오드에 인가된 전압에 따라서 값이 변화하고, 이로 인하여 비대칭 전력 분배 비율도 변한다. 측정에서 얻은 비대칭 전력 분배 비율(N)은 $2.59{\sim}10.4$로써 매우 다양한 전력 분배 비율을 보여준다.

Keywords

References

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