Analysis of Coupled or Single Nonuniform Transmission Lines Using Taylor’s Series Expansion

A method is proposed for analysis of arbitrarily loaded lossy and dispersive nonuniform single or coupled transmission lines. In this method, all the per-unit-length parameters or matrices of the single or coupled lines and also the voltages and currents along the length of them are expanded in Taylor’s series. The solutions of voltages and currents are obtained after finding unknown coefficients of their series. The accuracy of the method is studied using analysis of some special types of single and coupled transmission lines.