Analysis of crosstalk induction by EMI source on a twisted pair transmission line

We are aware of the near end and far end crosstalk in general. However, in this paper a general study is made of crosstalk induced on twisted pair transmission lines by a simulated power line type noisy source. A laboratory study of crosstalk induced by power parallel lines on the twisted pair transmission line is made. The influence of the ground plane location on the above crosstalk due to capacitive coupling is brought out both practically and theoretically. The capacitance is theoretically calculated by applying the finite element method (FEM) to the electric field intensity. Theoretically calculated results are almost in agreement with laboratory experimental results. It is concluded that closer the twisted pair transmission line to the ground the lesser is the induced crosstalk.