FDTD analysis of MHz band using Autoregressive moving average model

MHz frequency range is often used for wireless power transmission engineering, antenna engineering and so on. In the FDTD method, small cell size is required with complexity of analysis object. On the other hand, the FDTD maximum time step is determined by FDTD cell size. A quite small time step is required if small cell size is used. However, time period of MHz is long. Therefore, extremely large number of time steps is required to calculate MHz frequency range by the FDTD method. In this paper, reducing calculation time technique in the FDTD MHz range analysis is proposed. The proposed method uses ARMA (Autoregressive moving average model) model.