Modélisation de l’impédance de transfert des câbles coaxiaux à blindages multiples |
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Authors: | Bernard Démoulin Serge Ficheux Pierre Degauque |
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Institution: | 1. Laboratoire de radiopropagation et électronique, l’Université des sciences et techniques de Lille, 59655, Villeneuve-d’Ascq
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Abstract: | The shielding effectiveness of multishielded coaxial cables is determinated through the concept of the equivalent transfer impedance. The transfer impedance is computed from the main parameters of the coaxial structure. We describe in this paper the theoretical formulation to evaluate the amplitude of the disturbing voltage at the end of the cable flowed by the disturbing current. This result is used for the computation of the equivalent transfer impedance when the cable is made of various shields for exemple: homogeneous screens or braids. A comparison with the experimental results is also described. |
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