Time-Domain Analysis of Pulse Parameters Effects on Crosstalk (In High Speed Circuits)

Crosstalk among interconnects and printed-circuit board (PCB) traces is a major limiting factor of signal quality in highspeed digital and communication equipments especially when fast data buses are involved. Such a bus is considered as a planar multiconductor transmission line. This paper will demonstrate how the finite difference time domain (FDTD) method provides an exact solution of the transmission-line equations to analyze the near end and the far end crosstalk. In addition, this study makes it possible to analyze the rise time effect on the near and far end voltages of the victim conductor. The paper also discusses a statistical analysis, based upon a set of several simulations. Such analysis leads to a better understanding of the phenomenon and yields useful information.

Authors:

• L. Tani
• N. El Ouzzani

Keywords:

• Multiconductor transmission line
• Crosstalk
• Finite difference time domain (FDTD)
• printed-circuit board (PCB)
• Rise time
• Statistical analysis.

References:

[1] Qin Yin, Bin Chen, Bo Yang, Zhixue Shao, Bihua Zhou "Analysis of
Crosstalk in PCB Design". Lab of Electromagnetics, Nanjing
Engineering Institute No.1 Haifuxiang, Nanjing 210007, China.
[2] Christian Schuster, Wolfgang Fichtner, “Parasitic Modes on Printed
Circuit Boards and Their Effects on EMC and Signal Integrity” IEEE
Transactions on Electromagnetic Compatibility, vol. 43, no. 4,
November 2001.
[3] K. Li, M. A. Tassoudi, R, T. Shin, and J. A. Kong, “Simulation of
electromagnetic radiation and scattering using a finite difference-time
domain technique,” Comput. Appl. in Eng. Education, vol. 1, no, 1, pp.
45-62, Sept./Oct. 1992.
[4] C. R. Paul, Introduction to Electromugnetic Compatibility, New York
Wiley-Interscience, 1992.
[5] F. M. Tesche, “On the inclusion of losses in time-domain solutions of
electromagnetic interaction problems,”IEEE Trans. Elecfromugn.
[6] J. Alan Roden, Clayton R. Paul, William T. Smith and Stephen D.
Gedney, “Finite-Difference, Time Domain Analysis of Lossy
Transmission Lines,” Phil. IEEE Trans. Electromagnetic Compatibility,
vol. 38,no,1, February 1996.
[7] C. R. Paul, Analysis of Multiconductor Transmission Lines. New York:
Wiley Interscience, 1994.
[8] Loubna Tani, Nabih El Ouazzani,” FDTD-Based Statistical Analysis of
Crosstalk on Planar Data buses”. International Journal of Scientific
Engineering and Technology, Volume No.4, Issue No.2, Feb 2015.