Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Power Divider using Zero-Degree Composite Right/Left-Handed Transmission Line

0도 CRLH 전송선로를 이용한 전력 분배기

  • Kim, Seung-Hwan (Department of Radio Communication Engineering, Kumoh National Institute of Technology) ;
  • Kim, Young (Department of Radio Communication Engineering, Kumoh National Institute of Technology) ;
  • Yoon, Young-Chul (Department of Electric & Information Communication Engineering, Kwandong University)
  • 김승환 (금오공과대학교 전파통신공학과) ;
  • 김영 (금오공과대학교 전파통신공학과) ;
  • 윤영철 (관동대학교 전자정보통신공학부)
  • Received : 2009.09.12
  • Accepted : 2009.10.30
  • Published : 2009.10.31
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Abstract

This paper proposes a modified Wilkinson power divider using a zero-degree composit right/left-handed(CRLH) transmission line to obtain a isolation between ports. A zero-degree CRLH transmission line, which has a total electrical length of zero, consists of a RH(Right-Handed) transmission line of a negative phase characteristic and a LH (Left-Handed) transmission line of a positive phase characteristic. To validate a value of zero-degree CRLH transmission line, the electrical lengths of RH and LH transmission line select $-30^{\circ}$ and $+30^{\circ}$ and a 2-way Wilkinson divider designed, we are measured S21 of -3.3dB, S11 of -27.5dB and S23 of -25dB at 1GHz center frequency. These characteristics are same the conventional divider using RH transmission line.

본 논문은 월킨슨 전력 분배기에서 고립 특성을 확보하기 위해 사용된 100오옴의 연결을 0도 CRLH 전송선로를 사용한 변형된 전력 분배기를 제안하였다. 여기서 사용된 0도 CRLH 전송선로는 위상이 음의 특성을 갖는 RH(Right-Handed) 전송선로와 양의 특성을 가지는 LH (Left-Handed) 전송선로의 결합하여 전체 전기적 길이가 0도가 되는 특성을 갖고 있다. 0도 CRLH 전송선로를 $-30^{\circ}$의 RH 전송선로와 $+30^{\circ}$의 LH 전송선로의 전기적 길이를 선택하여 2-way 전력분배기의 특성을 확인한 결과는 중심주파수 1GHz에서 -3.3dB의 S21과 -27.5dB의 S11 그리고 -25dB 이상의 S23특성을 얻었다. 이 특성은 기존의 RH 전송선로를 이용한 것과 동일함을 확인하였다.

Keywords

References

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