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The Korean Institute of Electrical Engineers (대한전기학회)
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A Frequency Adjustable Double Lorentz CRLH Transmission Line using DGS

DGS를 이용한 주파수 가변 DL-CRLH 전송선로

  • 임종식 (순천향대 전기통신공학과) ;
  • 이재훈 (순천향대 전기통신공학과) ;
  • 이준 (순천향대 전기통신공학과) ;
  • 정용채 (전북대 전자정보공학부) ;
  • 한상민 (순천향대 정보통신공학과) ;
  • 안달 (순천향대 전기통신공학과)
  • Received : 2010.06.22
  • Accepted : 2010.07.05
  • Published : 2010.08.01
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Abstract

In this paper, a double lorentz composite right left handed(DL-CRLH) transmission line is designed using defected ground structure (DGS) and varactor diodes. Previously, the diode has been adopted only selectively for one of parallel or series resonators, and the balanced frequency as well as triple band frequencies were fixed. However in the proposed DL-CRLH transmission line, the balanced frequency, where the resonant frequencies of the series-connected parallel resonator and shunt-connected series resonator are the same, is adjustable. In addition, the triple band frequencies are controlled, too. The measured balanced frequency varies between 3.42~4.8GHz according to the controlled bias voltage. Under the same bias condition for the balanced frequency, the adjusted frequencies are 2.22~2.77GHz, 3.7~5.2GHz, 7.32~8.23GHz, 3.42~4.8GHz, and 4.44~5.92GHz for the conditions that ${\beta}d=+0.5{\pi}$, $-0.5{\pi}$, 2nd $+0.5{\pi}$, ${\omega}_{\infty}$, and ${\omega}_o$, respectively.

Keywords

References

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