On addressing the practical issues in the extraction of RLGC parameters for lossy multiconductor transmission lines using S-parameter models

This paper addresses the difficulties involved in extracting efficient and accurate frequency-dependent per-unit-length RLGC parameters for lossy multi-conductor transmission lines using S-parameter models. One major difficulty involved with the conventional equations for the extraction of RLGC parameters is the discontinuity caused by the hyperbolic functions. This limits the extraction technique to specific lengths, frequencies, and number of lines in the model. In this paper, we propose to perform the extraction by using modified equations obtained by combining the transmission matrices of two similar lines with different lengths. Numerical examples demonstrate the robustness of the proposed method.