Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Miniaturized UHF WLAN Bandpass Filter Design for Wide Stopband Using the Metamaterial CRLH Structure

메타재질 CRLH 구조를 이용한 넓은 차단 대역을 갖는 UHF WLAN용 소형 대역통과 여파기의 설계

  • Ju, Jeong-Ho (Dept. of Information & Telecommunication Engineering, University of Incheon) ;
  • Kahng, Sung-Tek (Dept. of Information & Telecommunication Engineering, University of Incheon)
  • 주정호 (인천대학교 정보통신공학부) ;
  • 강승택 (인천대학교 정보통신공학부)
  • Published : 2007.12.25
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Abstract

This paper proposes the design method based on the composite right/left-handed (CRLH) structure to miniaturize and enhance the rejection performance in the stopband. For realization, we used the 0-th order resonance point of the unbalanced case of the CRLH and the simple theory of Inverter. The proposed technique is validated by the performance predictions and experiments, and it is found out that the suggested method enables the sire reduction of over 65 % from the conventional filters such as the parallel coupled type.

본 논문에서는 WLAN(902MHz-928MHz)용 대역통과 여파기의 소형화와 향상된 차단대역 저지특성을 구현하기 위하여, 기존의 Right-Handed 전송선이 Left-Handed 특성을 가미한 복합구조를 이용하여 설계하였다. 대역통과 여파기의 unbalanced형 복합구조의 0차 공진기의 공진점을 사용하고 공진기간의 결합을 간편한 인버터 이론으로써 구현하였다. 제안된 기법의 타당성은 예측특성과 실험결과로써 확인되며, 평행결합 선로형과 같은 기존의 대역통과 여파기 보다 65% 이상 소형화됨을 알 수 있었다.

Keywords

References

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