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Dual-Band Negative Group Delay Circuit Using λ/4 Composite Right/Left-Handed Short Stubs 원문보기

Journal of the Korean Institute of Electromagnetic Engineering and Science, v.11 no.2, 2011년, pp.76 - 82  

Choi, Heung-Jae (Department of Electronics and Information Engineering, Chonbuk National University) ,  Mun, Tae-Su (Department of Electronics and Information Engineering, Chonbuk National University) ,  Jeong, Yong-Chae (Department of Electronics and Information Engineering, Chonbuk National University) ,  Lim, Jong-Sik (Department of Electrical and Communication Engineering, Soonchunhyang University) ,  Eom, Soon-Young (Antenna Technology Research Team, Electronics and Telecommunications Research Institute (ETRI)) ,  Jung, Young-Bae (Division of Electric, Electronic and Control Engineering, Hanbat National University)

Abstract ▼ AI-Helper 아이콘AI-Helper

In this paper, a novel design for a dual-band negative group delay circuit (NGDC) is proposed. Composite right/left-handed (CRLH) ${\lambda}/4$ short stubs are employed as a dual-band resonator. A CRLH ${\lambda}/4$ short stub is composed of a typical transmission line element ...

주제어

#Composite Right/Left-Handed   #Dual-Band   #Negative Group Delay   #WCDMA   #WiMAX  

AI 본문요약
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제안 방법

  • A dual-band NGDC employing the CRLH λ/4 stub and the broadband 3 dB 90° hybrid coupler is designed and implemented according to the proposed design method, and is fabricated with a microstrip line.
  • Based on the design method proposed in [17], the broadband 3 dB 90° hybrid coupler, which covers f1=2.14 GHz and f2=3.5 GHz was designed using the vertically installed planar (VIP) structure to increase the coupling area at the central coupling element.
  • In this paper, we propose the novel design and implementation of a 2-stage dual-band NGDC using a composite right/left-handed transmission line. The importance of the proposed work lies in the dual-band design for the interesting NGD property.
  • The main goal of this work is to design a dual-band NGDC for the WCDMA downlink band (2.14±0.02 GHz) and the WiMAX band (3.50±0.04 GHz).

대상 데이터

  • For both units, an RRP of 47/500 Ω were used.
  • The proposed circuit consists of a broadband 3 dB 90° hybrid coupler to fully cover the two frequencies (2.14～3.5 GHz) [17], and a termination resistor RRP that is loaded with a CRLH λ/4 short stub for dual-band operation.
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참고문헌 (17)

  1. H. Choi, Y. Jeong, J. S. Kenney, and C. D. Kim, "Dual-band feedforward linear power amplifier for digital cellular and IMT-2000 base-station," Microwave Optical Technol. Lett., vol. 51, no. 4, Apr. 2009. 

  2. M. R. Ghajar, S. Boumaiza, "Concurrent dual band 2.4/3.5GHz fully integrated power amplifier in 0.13 um CMOS technology," in Proc. 39th European Microwave Conf., pp. 1728-1731, Sep. 2009. 

  3. D. Solli, R. Y. Chiao, "Superluminal effects and negative delays in electronics, and their applications," Physical Review E, issue 5, Nov. 2002. 

  4. L. J. Wang, A. Kuzmich, and A. Dogariu, "Gain-assisted superluminal light propagation," Nature 406, pp. 277-279, Jun. 2000. 

    상세보기 crossref

  5. L. Brillouin, A. Sommerfeld, Wave Propagation and Group Velocity, Academic Press Network, pp. 113-137, 1960. 

  6. S. Lucyszyn, I. D. Robertson, "Analog reflection topology building blocks for adaptive microwave signal processing applications," IEEE Trans. Microwave Theory and Tech., vol. MTT-43, no. 3, pp. 601-661, Mar. 1995. 

    상세보기 crossref

  7. H. Noto, K. Yamauchi, M. Nakayama, and Y. Isota, "Negative group delay circuit for feed-forward amplifier," in IEEE MTT-S Int. Microwave Symp. Dig., pp. 1103-1106, Jun. 2007. 

    crossref

  8. B. Ravelo, A. Perennec, and M. Le Roy, "Synthesis of broadband negative group delay active circuits," in IEEE MTT-S Int. Microwave Symp. Dig., pp. 2177-2180, Jun. 2007. 

    crossref

  9. H. Choi, K. Song, C. D. Kim, and Y. Jeong, "Synthesis of negative group delay time circuit," in Asia- Pacific Microw. Conf. Dig., pp. B5-08, 2008. 

  10. H. Choi, Y. Kim, Y. Jeong, and C. D. Kim, "Synthesis of reflection type negative group delay circuit using transmission line resonator," in Proc. 39th European Microwave Conf., pp. 902-905, Sep. 2009. 

  11. Y. Jeong, H. Choi, and C. D. Kim, "Experimental verification for time advancement of negative group delay in RF electronics circuits," Electron. Lett., vol. 46, no. 4, pp. 306-307, Feb. 2010. 

    상세보기 crossref

  12. H. Choi, Y. Jeong, C. D. Kim, and J. S. Kenney, "Efficiency enhancement of feedforward amplifiers by employing a negative group-delay circuit," IEEE Trans. Microwave Theory and Tech., vol. 58, no. 5, pp. 1116-1125, May 2010. 

    상세보기 crossref

  13. H. Choi, Y. Jeong, C. D. Kim, and J. S. Kenney, "Bandwidth enhancement of an analog feedback amplifier by employing a negative group delay circuit," Progress in Electromagnetics Research, vol. 105, pp. 253-272, 2010. 

    상세보기 crossref

  14. Y. Eom, and Y. B. Jung, "2.14/3.5 GHz novel dual- band negative group delay circuit design based on composite right/left-handed transmission line," in Proc. 40th European Microwave Conf., pp. 441- 444, Sep. 2010. 

  15. C. Caloz, A. Sanada, and T. Itoh, "A novel composite right/left-handed coupled-line directional coupler with arbitrary coupling level and broad bandwidth," IEEE Trans. on Microwave Theory and Tech., vol. 52, pp. 980-992, Mar. 2004. 

    상세보기 crossref

  16. P. Chi, T. Itoh, "Miniaturized dual-band directional couplers using composite right/left-handed transmission structures and their applications in beam pattern diversity systems", IEEE Trans. on Microwave Theory and Tech., vol. MTT-57, no. 5, pp. 1207- 1215, May 2009. 

    상세보기 crossref

  17. I. S. Kim, C. S. Lee, "A study on broadband hybrid design using vertically installed planar circuit with partially removed ground plane," Journal of KIEES, vol. 16, no. 7, pp. 661-670, Jul. 2005. 

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