Iterative Solution of MTL Based on the Spatial Decomposition and the Second-Order FDTD

To reduce the computational time for solving multiconductor transmission lines (MTL), an iterative solution with a spatial decomposition and the second-order finite-difference time domain (FDTD) is presented. The coupling effects among the MTL are equivalent by a set of distributed voltage and current sources, which decouples the MTL. The voltages and the currents along the lines are evaluated by the second-order FDTD at each iteration step, and the equivalent distributed sources are updated accordingly. The solution of MTL is obtained when convergence is reached. The proposed approach is validated by the numerical examples. The major advantage of the proposed approach, by nature, is an inherent parallel algorithm, which will reduce the computational time, especially for the MTL system with nonlinear devices.