The Journal of the Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회논문지)

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
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Near-end Cross-talk Analysis of Unshielded Twisted Pair Cable using the Transmission Line Model

전송선로 모델을 이용한 UTP 케이블의 NEXT 해석

  • 이원희 (포항공과대학교 전자전기공학과) ;
  • 박위상 (포항공과대학교 전자전기공학과)
  • Received : 2009.03.06
  • Published : 2009.04.30
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Abstract

The UTP cable has been widely used, recently it is being developed for use in the UHF frequency band. One important characteristic of the UTP cable is NEXT. This research is to develop a pitch selection technique for an UTP cable which leads to a satisfactory NEXT. The transmission line model involving mutual inductances and capacitances between line pairs is used, and the simulation was carried out for frequencies from 1 MHz to 600 MHz. With respect to the worst margin of the NEXT for a Cat. 6 cable the simulation and measurement results show a good agreement.

UTP 케이블은 광범위하게 사용되고 있고, 최근에는 UHF 주파수 밴드를 위한 제품도 개발되고 있다. UTP 케이블의 가장 중요한 성능 중 하나는 NEXT 특성이다. NEXT 특성을 만족하는 UTP 케이블을 제조하기 위해서 적당한 피치의 길이를 선택하는 기술을 연구하였다. 전산모사는 선로 사이의 뮤추얼 인덕턴스와 커패시턴스를 포함한 전송선로 모델을 이용하였고, 주파수는 1 MHz에서 600 MHz까지의 데이터로 나타내었다. Cat. 6 케이블 NEXT의 worst margin은 전산모사와 측정 결과가 잘 일치하였다.

Keywords

References

  1. J. R. Moser, R. F. Spencer, "Predicting the Magnetic Fields from a Twsited-Pair Cable", IEEE Trans. Electromagnetic Compatibility, Vol. EMC-10, No.3, pp. 324-329, 1968. https://doi.org/10.1109/TEMC.1968.302936
  2. S. Shenfeld, "Magnetic Fields of Twisted-Wire Pairs", IEEE Trans. Electromagnetic Compatibility, Vol. EMC-11, No.4, pp. 164-168, 1969. https://doi.org/10.1109/TEMC.1969.303030
  3. A. Rashid, "A Mathematic Analysis of the Electromagnetic Compatibility of Twisted Wires", IEEE International Symposium on EMC, pp.31-35, 1978.
  4. C. R. Paul, J. W. Mcknight, "Prediction of Crosstalk Involving Twisted Pairs of Wires-Part1: A Transmission Line Model for Twisted Wire Pairs", IEEE Trans. Electromagnetic Compatibility, Vol. EMC-21, No.2, pp. 92-104, 1979. https://doi.org/10.1109/TEMC.1979.303751
  5. C. R. Paul, "Literal Solutions for Time-Domain Crosstalk on Lossless Transmission Lines", IEEE Trans. Electromagnetic Compatibility, Vol. EMC-34, No. 4, pp. 433-444, 1992.
  6. C. R. Paul, A. E. Feather, "Computation of the Transmission Line Inductance and Capacitance Matrices form the Generalized Capacitance Matrix", IEEE Trans. Electromagnetic Compatibility, Vol.EMC-18, pp. 175-183, 1976. https://doi.org/10.1109/TEMC.1976.303498
  7. C. R. Paul, "Solution of the Transmission Line Equations for Tree-conductor lines In Homogeneous Media", IEEE Trans. Electromagnetic Compatibility, Vol. EMC-20, pp. 216-222, 1978. https://doi.org/10.1109/TEMC.1978.303651