This paper deals with the self-imaging effect in multimode waveguides. Analogies and differences to the free-space case are shown. The fields in multimode waveguides are studied. Particularly, the behavior of the fields is examined, when a periodic perturbation is introduced.

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An enhanced MoM scheme is suggested to effectively handle EM and EMC problems with including general N-port networks. This scheme is based on incorporation of network equations for voltages and currents into the standard MoM scheme. Application of this scheme to handle complicated automotive EMC problems is considered. Potential of integratedMoM-network scheme to solve complicated automotive and other vehicle EMC problems is outlined.

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