The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Design of a Miniature Power Divider Based on the CRLH Zeroth Order Resonator with the Bandpass Filtering for the Military Satellite

군 위성통신 중계기용 대역통과 여파기 특성을 갖는 CRLH O-차 공진 기반 소형 전력분배기의 설계

  • 엄다정 (인천대학교 정보통신공학과 전파환경.전파공학 연구실) ;
  • 강승택 (인천대학교 정보통신공학과 전파환경.전파공학 연구실) ;
  • 송충호 (LIG넥스원) ;
  • 우춘식 (LIG넥스원) ;
  • 박도현 (LIG넥스원)
  • Received : 2011.11.24
  • Accepted : 2012.08.14
  • Published : 2012.08.31
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Abstract

In this paper, a new compact power divider is suggested. Instead of the quarter wavelength transmission line(TX-line)s for the branches of the conventional Wilkinson's power divider design method, we use our composite right- and left-handed(CRLH) TX-line zeroth order resonator(ZOR) bandpass filters of one twelfth wavelength and reduce the physical length of the power divider. Besides, the filters in the branches can secure the passband for power-division. To validate the proposed power divider, we take an L-band for millitary satellaite transponder as the test case and the performances of the circuit and full-wave simulation results with the CRLH properties of the structure are shown with the dispersion curve and E-field at the ZOR. The measurement is compared with the simulation results. Also, the size reduction effect by the proposed scheme is addressed

본 논문에서는 새로운 소형 전력 분배기를 제안한다. 기존의 Wilkinson 전력 분배기에서 ${\lambda}/4$ 길이의 분기선로 대신 ${\lambda}/12$ 길이의 CRLH 전송선 0차 공진 대역통과 여파기를 사용하여 전체구조의 물리적 크기를 줄였다. 분기 선로의 위상을 만족하면서 원하는 주파수를 중심으로 대역을 형성하고 전력 분배가 이뤄지는 기능을 가진다. 설계방법의 타당성 확인을 위해 군위성 통신 시스템의 L-대역을 적용예로 선택하여 등가 모델과 3차원 모의실험의 성능과 함께 분산도와 ZOR 전계분포로써 CRLH의 특성이 제시된다. 모의실험 결과는 측정결과와 비교하였으며 제안기법의 소형화 효과가 논의된다.

Keywords

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