한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제22권9호
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  • Pages.852-857
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  • 2011
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  • 1226-3133(pISSN)
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  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지
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가변 특성 임피던스 전송 선로를 이용한 가변 이중 대역 대역 통과 여파기

A Tuable Dual-Band Bandpass Filter Design Using Variable Characteristic Transmission Lines

  • ;
  • 정용채 (전북대학교 전자정보공학부 및 IT융합연구센터) ;
  • 임종식 (순천향대학교 전기통신공학과) ;
  • 김동수 (전자부품연구원) ;
  • 김준철 (전자부품연구원)
  • Chaudhary, Girdhari (Department of Electronics & Communication Engineering, IT Convergence Research Center, Chonbuk National University) ;
  • Jeong, Yong-Chae (Department of Electronics & Communication Engineering, IT Convergence Research Center, Chonbuk National University) ;
  • Lim, Jong-Sik (Department of Electronics & Communication Engineering, Soonchunhyang University) ;
  • Kim, Dong-Su (Korea Electronics Technology Institute) ;
  • Kim, Jun-Chul (Korea Electronics Technology Institute)
  • 발행 : 2011.09.30
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초록

본 논문에서는 이중 대역 대역 통과 여파기 설계에 이용 가능한 가변 특성 임피던스 전송 선로의 응용을 제시하였다. 제안된 여파기는 고정된 첫 번째 통과 대역과 가변 가능한 두 번째 통과 대역을 갖는다. 스터브 부하공진기(Stub Loaded Resonator: SLR)는 직렬 공진기와 개방 단락 스터브로 구성되는데, 개방 단락 스터브를 결함 접지 구조(Defected Ground Structure: DGS) 전송 선로와 바랙터 다이오드로 구현함으로써 두 번째 통과 대역의 조정이 가능하다. 제안된 구조의 타당성을 보이기 위해 3개의 전송 영점을 갖는 2단 이중 대역 대역 통과 여파기를 설계하였고, 이론적인 예측값과 시뮬레이션 결과를 실험적으로 증명하였다.

In this paper, the application of a variable characteristic impedance transmission line that can be used to design a dual-band bandpass filter(BPF) is presented. The proposed filter offers a fixed first frequency passband and a controllable second passband. The tuning of the second passband is achieved by varying the characteristic impedance of and open shunt stub line in a stub loaded resonator(SLR) with the help of a defected ground structure(DGS) transmission line and varactor diodes. In order to validate the proposed structure, a two stage dual-band BPF with three transmission zeros was implemeted and experimentally verified based on its theoretical predictions and simulations.

키워드

참고문헌

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