FDTD Analysis of Periodic Structures With Arbitrary Skewed Grid

Khaled ElMahgoub, Fan Yang, Atef Z Elsherbeni, Veysel Demir, Ji Chen
2010 IEEE Transactions on Antennas and Propagation  
An efficient finite-difference time-domain (FDTD) algorithm with a simple periodic boundary condition (PBC) is developed to analyze general periodic structures with arbitrary skewed grids. The algorithm is easy to implement and efficient in both memory usage and computation time. The stability criterion of the algorithm is angle independent and therefore it is suitable for implementing incidence with angle close to grazing as well as normal incidence. The validity of this algorithm is verified
more » ... orithm is verified through several numerical examples such as dipole and Jerusalem cross frequency selective surfaces (FSS) with various skew angles. Index Terms-Finite-difference time-domain (FDTD), frequency selective surfaces (FSS), periodic boundary conditions (PBC), periodic structures, skewed grid. Fig. 1. Geometries of (a) axial and (b) skewed periodic structures.
doi:10.1109/tap.2010.2050445 fatcat:v5s43uy6ibgbhkie2hcyhxt5iy