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

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Optimized Design Technique of a Differential Pair Having 2 Drop Configuration through Impedance Analysis

2 Drop 구조를 가지는 Differential Pair의 Impedance 해석 및 설계 방안

  • Bae, Min-Ji (Agency for Defense Development) ;
  • Kim, Yoon-Jung (Department for Electronic and Electrical Engineering, Pohang University of Science and Technology) ;
  • Choi, Ung (Department for Electronic and Electrical Engineering, Pohang University of Science and Technology) ;
  • Yang, Kook-Bo (Department for Electronic and Electrical Engineering, Pohang University of Science and Technology) ;
  • Kim, Young-Soo (Department for Electronic and Electrical Engineering, Pohang University of Science and Technology)
  • 배민지 (국방과학연구소) ;
  • 김윤정 (포항공과대학교 전자전기공학과) ;
  • 최웅 (포항공과대학교 전자전기공학과) ;
  • 양국보 (포항공과대학교 전자전기공학과) ;
  • 김영수 (포항공과대학교 전자전기공학과)
  • Published : 2009.02.28
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Abstract

In this paper, impedance analysis of a differential pall having 2 drop configuration is performed using the reflection theory and verified by circuit simulator (Ansoft designer). Through the impedance analysis, it was possible to understand the signal transmission at a differential pall, and an optimized 2 drop design technique of a differential pair could be developed. When compared with the conventional design, the proposed design shows a good signal integrity and has much less design restrictions.

본 논문에서는 microstrip line 구조를 가지는 differential pair의 2 drop 구조에 대한 임피던스 해석을 reflection theory를 바탕으로 분석하였다. 또한 시뮬레이션을 통한 transient 해석을 통해 임피던스 해석의 타당성을 검증하였다. 위와 같은 해석 과정을 통하여 다양한 drop 구조의 신호 전달 특성을 이해할 수 있다. 임피던스 해석을 바탕으로 2 drop 구조 해석을 통하여 최적의 signal integrity를 가지는 설계 기법을 제안하였고, circuit 시뮬레이션 해석(Ansoft designer)을 통해 signal integrity 효과를 검증하였다.

Keywords

References

  1. 배민지, 김윤정, 최웅, 양국보, 김영수, '2 drop 구조를 가지는 differential pair의 signal integrity에 관한 고찰', 한국전자파학회 종합학술발표회논문집, 1(1), pp. 120, 2008년 11월
  2. 배민지, 김윤정, 최웅, 양국보, 김영수, 'Differential pair에서 최적의 signal integrity를 위한 2-drop 설계 방법', 대한전자공학회 추계학술대회논문집, 31(2), pp. 1013-1014, 2008년 11월
  3. Texas Instruments, 'LVDS Application and Data Handbook', Literature Number: SLLD009, Nov. 2002
  4. Elliott Cole, 'LVDS Multidrop Connection', Application note, Texas Instrument, 2002
  5. LVDS Owner's Manual, Including High-Speed CML and Signal Conditioning, Fourth Edition, 2002
  6. John Goldie, 'A Baker's dozen of high-speed differential backplane design tips', High-Performance Design Conference, 2000
  7. Eric Bogatin, Signal Integrity Simplified, Prentice Hall, pp. 471-549, 2002
  8. John Goldie, Michael Hinh, 'Multi-Drop Channel- Link Operation', National Semiconductor, Application Note 1109, May 1998
  9. Clayton R. Paul, Electromagnetic Compatibility, Wiley, 2005
  10. Kenneth M. True, 'Long transmission lines and data signal quality', National Semiconductor Application Note 807, Mar. 1992