Far Field Analysis by MR/FDTD with Adaptive Integration Method

With the widespread adoption of telecommunication devices such as smartphones, the importance of numerically simulating the environments where such devices are typically used (e.g. cities) had increased over the recent years. Simulating such environments typically requires large-scale models. The Finite-Difference Time-Domain (FDTD) method is a widely used numerical electromagnetic simulation method. However, this method is typically not suited for simulating large-scale models. The Multiple-Region (MR) FDTD method addresses some down-sides of the FDTD method. However, its calculation speed can still be slow. In this letter, calculation speed optimization method for the MR/FDTD is proposed and verified through simulations.