The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Design of Dual Band Amplifier Using Left Handed Transmission Lines

LH 전송선로를 이용한 이중대역 증폭기의 설계

  • 임종식 (순천향대 전기통신공학과) ;
  • 이재훈 (순천향대 전기통신공학과) ;
  • 이준 (순천향대 전기통신공학과) ;
  • 구자경 (순천향대 전기통신공학과) ;
  • 정용채 (전북대 전자정보공학부) ;
  • 한상민 (순천향대 정보통신공학) ;
  • 안달 (순천향대 전기통신공학과)
  • Received : 2010.08.26
  • Accepted : 2010.10.11
  • Published : 2010.11.01
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Abstract

This paper describes a design of dual band amplifier using left handed (LHJ) transmission line, which is a part of composite right/left handed (CRLH) transmission line. It is well known that CRLH transmission lines show dual band frequency response. At first, two single-band amplifiers for frequency f1 and f2 are designed, and their matching networks at both amplifiers are synthesized into the dual band matching network by adopting CRLH structure. As an example for proving the validity of the proposed design, a dual band amplifier operating at 1800MHz and 2300MHz is designed, fabricated and measured. The simulation and measurement show that the proposed amplifier operates well at the desired dual bands with the gain of 13.65dB and 19dB at 1850MHz and 2360MHz, respectively, and a good matching performances. In addition, a quite good agreement between the simulation and measurement is observed.

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References

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