System simulation of network analysis for a lossy cable system

Abstract

This Paper presents a system simulation for a lossy cable system using network analysis method. A R'L'G'C' distributed element model for the lossy transmission line parameters of a twisted-pair cable including frequency dependent filtering effect is used in this study to evaluate impulse response of the cable systems in time and frequency domain. Three different kinds of network parameter, impedance (Z), scattering (S) and ABCD, are used to calculate the reflected wave from the cable system. The reflection coefficient of cable under test is simulated using vector network analyzer (VNA) method and converted to other characteristic parameters of transmission line. The simulated results are compared with the ideal results from transmission line model.