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LH 전송선로를 이용한 이중대역 증폭기의 설계

A Design of Dual Band Amplifier Using Left Handed Transmission Lines

  • 임종식 (순천향대 전기통신공학과) ;
  • 이재훈 (순천향대 전기통신공학과) ;
  • 이준 (순천향대 전기통신공학과) ;
  • 구자경 (순천향대 전기통신공학과) ;
  • 정용채 (전북대 전자정보공학부) ;
  • 한상민 (순천향대 정보통신공학) ;
  • 안달 (순천향대 전기통신공학과)
  • 투고 : 2010.08.26
  • 심사 : 2010.10.11
  • 발행 : 2010.11.01

초록

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.

키워드

참고문헌

  1. D. M. Pozar, Microwave Engineering, 3rd edition, John Wiely and Sons, Inc., 2003.
  2. K. C. Gupta, et al., Microstrip Lines and Slotlines, 2nd edition, Artech House, Boston, 1996.
  3. R. A. Shelby, D. R. Smith, and S. Schultz, "Experimental verification of a negative index refraction," Science, vol. 292, pp. 77-79, Apr. 2001. https://doi.org/10.1126/science.1058847
  4. Caloz and T. Itoh, "Novel microwave devices and structures based on the transmission line approach of meta-materials," in IEEE MTT-S Int. Microwave Symp. Dig., vol. 1, 2003, pp. 195-198.
  5. K. Iyer and G. V. Eleftheriades, "Negative refractive-index metamaterials supporting 2-D waves," in IEEE MTT-S Int. Microwave Symp. Dig., vol. 2, Seattle, WA, June 2002, pp. 1067-1070.
  6. G. V. Eleftheriades, A. K. Iyer, and P. C. Kremer, "Planar negative refractive index media using periodically L-C loaded transmission lines", IEEE Trans. on Microwave Theory Tech., vol. 50, no. 12, pp. 2702-2712, Dec. 2002. https://doi.org/10.1109/TMTT.2002.805197
  7. C. Caloz, T. Itoh, "Application of the transmission line theory of Left-Handed(LH) materials to the realization of a microstrip LH transmission line", IEEE-APS Int'l Symp., vol. 2, pp. 412-415, San Antonio, TX, Jun. 2002.
  8. C. Caloz and T. Itoh, "Unusual propagation characteristics in CRLH periodic structures," in Proc. IEEE AP-S International Symposium USNC/URSI National Radio Science Meeting, Special session EBG/PBG-Based Antennas and Wave-Guiding Structures, Monterey, CA, USA, June 2004, CD-R 55.7
  9. C. Caloz, "Dual composite right/left-handed(D-CRLH) transmission line metamaterial", IEEE Microw. Wireless Compon. Lett., vol. 16, no. 11, pp. 585-687, Nov. 2006. https://doi.org/10.1109/LMWC.2006.884773
  10. A. Sanada, C. Caloz, and T. Itoh, "Characteristics of the composite right/left-handed transmission lines," IEEE Microwave Wireless Comp. Lett., vol. 14, pp. 68-70, Feb. 2004. https://doi.org/10.1109/LMWC.2003.822563
  11. I. H. Lin, C. Caloz, and T. Itoh, "A branch-line coupler with two arbitrary operating frequencies using left-handed transmission lines", Proc. IEEE MTT-S Int. Microwave Symp. Dig., Special Session Metamaterials, Philadelphia, USA, pp. 325-327, Jun. 2003.
  12. I. H. Lin, K. M. K. H. Leong, C. Caloz, and T. Itoh, "Dual-band sub-harmonic quadrature mixer using composite right/left-handed transmission lines", IEE Proc. Microwaves, Antennas and Propagation, vol. 153, no. 4, pp. 153-180, Aug. 2006.
  13. I. H. Lin, M. DeVincentis, C. Caloz, and T. Itoh, "Arbitrary Dual-Band Components Using Composite Right/Left-Handed Transmission Lines," IEEE Trans. on Microw. Theory Tech., Vol. 52, No. 4, pp.1142-1149, Apr. 2004. https://doi.org/10.1109/TMTT.2004.825747
  14. 박민우, 구자경, 임종식, 정용채, 안달, "CRLH 전송선로 구조를 이용한 이중대역 브랜치 라인 커플러 설계", 전기학회논문지, 제 58권 제 12호, pp. 2462-2467, 2009년 12월.
  15. 임종식, 이재훈, 이준, 정용채, 한상민, 안달, "DGS를 이용한 주파수 가변 DL-CRLH 전송선로", 전기학회논문지, 제 59권 제 8호, pp. 1429-1435, 2010년 8월.
  16. S. H. Ji, C. S. Cho, J. W. Lee, and J. Kim, "Concurrent Dual-Band Class-E Power Amplifier Using Composite Right/Left-Handed Transmission Lines," IEEE Trans. on Microw. Theory Tech., Vol. 55, No. 6, Part 2, pp. 1341-1347, Jun. 2007. https://doi.org/10.1109/TMTT.2007.895236