Excitation source in FDTD method calculate phased array antenna

Excitation source model with an internal source resistance in the dipole feeding gap is applied in the phased array antenna calculated by finite difference-time domain(FDTD) method, and the modulation Gaussian pulse is also used, which can improve the convergence. The proper time delay introduced in the time-domain excitation signal can lead the needed phase to each feed cell. The result of a dyadic phased array antenna validates the algorithm and the grogram, and a six-cell circular phased array antenna illustrates the application in practice.