Sensitivity Analysis Of Networks Including Uniform And Nonuniform Transmission Lines

At present, there are still few good methods in nonuniform transmission lines (NTLs) sensitivity analysis. The differential quadrature method (DQM) adapts to model uniform transmission lines (UTLs) and NTLs. Due to global sampling of points in the DQM approximation, it requires far fewer grid points in order to build accurate discrete models than other numerical methods do. The DQM-based modeling leads to high accuracy, as well as high efficiency. First of all, this paper analyzes the sensitivity of NTLs on frequency-domain using the DQM; secondly, in order to obtain the sensitivity directly on time domain, this paper calculates the sensitivity using DQM and the precise integration method, while the method obtaining the sensitivity using the numerical inversion of Laplace transmission is also presented; at last, this paper applied the this paper's method to two examples about the microwave and high speed circuits and the electric power system, which analyzed the sensitivities about the parameters of PCB's interconnects and the tower model.