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A Design of Frequency Multipliers Using λ/4 Open Composite Right/Left Handed Stub and Left Handed Transmission Line

λ/4 개방형 CRLH 스터브와 LH 전송 선로를 이용한 주파수 체배기 설계

  • Seo, Su-Jin (Dept. of Electronics and Communication Engineering, Chonbuk National University) ;
  • Park, Sang-Keun (Samsung Thales) ;
  • Choi, Heung-Jae (Dept. of Electronics and Communication Engineering, Chonbuk National University) ;
  • Jeong, Yong-Chae (Dept. of Electronics and Communication Engineering, Chonbuk National University) ;
  • Lim, Jong-Sik (Dept. of Electrical & Communication System Engineering, Soonchunhyang University)
  • 서수진 (전북대학교 전자정보공학부 & BK21) ;
  • 박상근 (삼성탈레스(주)) ;
  • 최흥재 (전북대학교 전자정보공학부 & BK21) ;
  • 정용채 (전북대학교 전자정보공학부 & BK21) ;
  • 임종식 (순천향대학교 전기통신시스템공학과)
  • Published : 2007.11.30

Abstract

A novel frequency multiplier using composite right/left-handed transmission line is proposed. The left-handed transmission line in the proposed frequency multiplier suppresses the fundamental component($f_0$), while the composite right/left-handed ${\lambda}/4$ open stub diminishes unwanted harmonics. Due to the combination of the left-handed transmission line and composite right/left-handed ${\lambda}/4$ open stub, the only desirable multiplied frequency component such as 3 $f_0$ and 4 $f_0$ are obtained at the output port excellently. For the example of the proposed design, frequency multipliers are designed at 1 GHz of $f_0$ and measured. The measured output power of 3 $f_0$ and 4 $f_0$ is -5.67 dBm and -6.43 dBm, respectively, when the fundamental input power was 0 dBm.

본 논문에서는 composite right/left-handed 전송 선로를 이용한 주파수 체배기를 제안하였다. 제안된 주파수 체배기의 left-handed 전송 선로는 기본 주파수($f_0$) 성분을 억압하였고, composite right/left-handed ${\lambda}/4$ 개방 스터브는 원하지 않는 고조파 신호 성분들을 제거하였다. Left-handed 전송 선로와 composite right/left-handed ${\lambda}/4$ 개방 스터브를 조합하여 사용함으로, 오직 3차 및 4차 고조파와 같은 원하는 고조파 신호들만을 효과적으로 얻을 수 있었다. 본 논문의 타당성을 보이기 위해 기본 주파수를 1 GHz로 하는 주파수 체배기를 설계하고, 측정하였다. 설계된 주파수 체배기의 입력 전력을 0 dBm으로 하였을 때, 측정된 3차 체배기와 4차 체배기의 출력 전력은 각각 -5.67 dBm과 -6.43 dBm이다.

Keywords

References

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