2D Graded-Mesh FDTD Algorithm for Interconnects Analysis

The traditional FDTD discretization of Maxwell equations in which all cells are equal is proved not to be efficient in many cases. In order to conform to fine scale geometric details of interconnects without increasing the overall mesh size and without losing computational accuracy, graded mesh technique combined with perfectly electric conducting boundary in 2D FDTD algorithm is proposed in this paper. Numerical experiments verify its accuracy and efficiency.