Closed-Form Transmission Line Model for Radiated Susceptibility in Metallic Enclosures
Giordano Spadacini, Sergio A. Pignari, Filippo Marliani
IEEE Transactions on Electromagnetic Compatibility
Vol. 47, No. 4, Nov. 2005
701 - 708
Terms—Field-to-wire coupling, metallic enclosures, radiated susceptibility, transmission lines (TLs), wire scatterers
This work presents an approximate frequency domain mathematical model based on the transmission line (TL) theory for field-to-wire coupling in a rectangular metallic enclosure. The currents and voltages at the terminations of a TL induced by known electromagnetic (EM) field sources are expressed in closed form. Validity limits and applicability of the model are discussed by comparing the analytical TL-based predictions with the outputs of a full-wave numerical analysis of the overall structure using a three-dimensional finite integration technique. Deviations from the full-wave solution, due to the scattered field from the TL, have been identified, analyzed, and discussed. The proposed analytical model proves to be generally suited for accurate prediction of radiated susceptibility of single-ended interconnections in closed environments.
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