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Abstract-The inductive effect of near-end crosstalk for a category five unshielded, twisted-pair cable has been verified using the electromagnetic topology simulation method. Crosstalk reduction and its dependency on such parameters as driving signals, circuit configuration and impedance, are studied. The simulation results are consistent with analytical analysis. Results show that the straightthrough, differential-generator, twisted-pair receptor model is the most effective configuration to control the near-end crosstalk level. This is due to the influences from both the neutralizing mutual inductance and the single current generator. The simulation results also show that electromagnetic topology-based predictions are valid only for cables that are electrically short. Simulations are carried out using a compaction scheme with a single equivalent circuit. As a result, the unshielded, twisted-pair cable portion of the circuit can be combined with a larger network for analyzing the overall response of the entire network system.

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− The ability to understand and predict the effects on electronic systems that might result from an intentional EMI attack is of great importance in defending critical electronic systems against such a threat. In this paper we focus on predicting the response of a microcontroller to a high-power electromagnetic waveform. We will describe our approach and present results from experimental investigations as well as modeling of the response of different microcontrollers to direct injection of an RF signal into clock and signal lines. In addition, we will discuss how these results may be extended to the case of free-field illumination. Finally, we will describe how our results shed light on the broader problem of predicting the response of a general digital system to a high-power electromagnetic waveform.

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