Acceleration of FDTD radiation pattern calculation using two-dimensional ARMA

抄録

In recent years, the finite-difference time-domain (FDTD) method has been widely employed for analyzing various electromagnetic problems, including low-frequency problems. It provides accurate results in most cases, but it requires relatively long calculation time for slow convergence problems, such as array antennas. For this reason, the autoregressive moving average (ARMA) model has been applied to the FDTD analysis to reduce calculation time. However, it has not been applied to FDTD radiation pattern analysis because the radiation patterns calculation requires multi-dimensional (time and space) data. In this letter, two-dimensional ARMA is applied to FDTD radiation pattern analysis to reduce the calculation time. We confirm effectiveness of the method by calculating the radiation pattern of Yagi-Uda antenna.