Signal Induced EMI in Fibre Channel Cable-Connector Assemblies

M. Xu
S. Radu
James L. Drewniak, Missouri University of Science and Technology
Todd H. Hubing, Missouri University of Science and Technology
James L. Knighten
L. O. Hoeft
J. T. DiBene II

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The EMI performance of cable-connector assemblies designed for FC-0 transmission has been studied. Two types of cable and two connector styles were evaluated. Experimental results show that the dominant radiation mechanism for short cable lengths is the common-mode current caused by source and PCB skew that leaks to the exterior of the shield via the transfer impedance of the connector. However, the cable imbalance becomes a more significant source of common-mode current than the source skew when the cable assembly is tens of meters long