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EMC analysis and prediction of complex electronic systems

Taylor & Francis Group4 Park Square - Milton ParkAbingdon - Oxon - UK
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  • Mathematics
  • Physics


A methodology is presented to study the interaction of electromagnetic disturbances with complex systems represented as networks of transmission lines. The systems are separated into distributed and lumped parts: a clear distinction is made between circuits of discrete lumped, linear, passive or active components that represent loads or interconnection blocks, and connecting wires that are treated as multi-conductor transmission lines. The telegrapher's differential equations represent a widely accepted model for wire bundles, buses or lines of common use in electrical and electronic circuitry. Coupling with external interfering disturbances is rigorously evaluated, and equivalent distributed sources are introduced along the lines. Each subsystem is viewed as a multi-port component and is characterized in terms of a multi-port matrix. This is a natural choice for the distributed element sections and it is also well suited for lumped circuits. The key element of this formulation is the definition of a correspondance matrix that accounts for the topology of the connections between sections and blocks. The solution of the system equations describes the influence of a disturbance in virtually any section of the network. The potential of this method to display either the frequency or the time response at different places inside a complex system is assessed

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