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Study on Extracting Method of Distributed Parameters for Non-uniform Transmission Lines

In this paper, in order to solve the problem about extracting the distributed parameters of 3D vertical bending non-uniform transmission lines, the model of this structure composed of two conductors is studied, and the time domain method for extracting the distributed parameters is discussed. The time domain method is given by analyzing the port characteristics of non-uniform transmission lines and researching the relationships between port parameters. Then, the lumped equivalent circuit model for this non-uniform transmission lines is established, and the S-parameters of ports in equivalent circuit model are calculated. Compared S-parameters obtained by the time domain method and equivalent circuit method, the validity and correctness of the time domain method for extracting the distributed parameters of 3D vertical bending non-uniform transmission lines are verified.