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A New CPW Dual Band Wilkinson Power Divider Using Composite Right/Left-Handed Transmission Line

Composite Righg/Left-Hand 전송선로를 이용한 새로운 이중대역의 CPW 윌킨슨 전력 분배기

  • Zhang, Zufu (Dept. of Radio Science and Engineering, Kwangwoon University) ;
  • Wang, Yang (Dept. of Radio Science and Engineering, Kwangwoon University) ;
  • Yoon, Ki-Cheol (RFIC Research Center Kwangwoon University) ;
  • Lee, Jong-Chul (Dept. of Radio Science and Engineering, Kwangwoon University)
  • 장조복 (광운대학교 전파공학과) ;
  • 왕양 (광운대학교 전파공학과) ;
  • 윤기철 (광운대학교 RFIC 연구센터) ;
  • 이종철 (광운대학교 전파공학과)
  • Received : 2015.10.06
  • Accepted : 2015.11.03
  • Published : 2015.12.31
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Abstract

In this paper, a new kind of wideband, low-loss composite right/left-handed (CRLH) transmission line (TL) and a Wilkinson power divider are presented. The TL is composed of a parallel meander inductor and a series cutting capacitor based on coplanar waveguide (CPW) structure. The power divider is designed by substituting the CRLH-TL into the conventional transmission line. The experiment results show that the TL has a good agreement with the desired results, exhibiting the return losses under 12 dB from 8.4 GHz to 34.4 GHz. The operating frequencies of the power divider are 12.05 GHz to 13.15 GHz and 16.50 GHz to 19.30 GHz, respectively. The 20 dB bandwidths are 8.9 % and 17.9 %, respectively. Typical experimental measurements are conducted and compared with the simulated results.

본 논문에서는 새로운 기법의 광대역 저손실 CRLH(composit right/left handed) 전송선로와 윌킨슨 전력 분배기에 대해 제안한다. 전송선로는 평형 미엔더 인덕터와 직렬 캐패시터로 구성된 coplanar 도파관 (CPW)으로 구성되며, 전력 분배기는 CRLH 전송선로를 일반 전송선로 부분에 대체하여 설계를 한다. 실험 결과 동작 주파수 대역 8.4 GHz 에서 30.0 GHz내에서 반사손실은 12 dB 이하로써 비교적 만족한 결과를 얻었다. 전력 분배기의 주파수는 12.05에서 13.15 GHz 그리고 16.50에서 19.30 GHz 로써 대역폭은 20 dB 기준으로 8.9 % 및 17.9 % 이며 이는 측정결과와 시뮬레이션 결과와 비교를 하였을 때 상당히 일치하는 것을 알 수 있다.

Keywords

References

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