ANTENNA MODELLING USING THE DGF-FDTD METHOD

A new discrete Green’s function formulation of the finite difference time domain (DGF-FDTD) method has been developed which expresses the field response as a convolution of the current sources and the impulse response of the FDTD equation system. DGF-FDTD avoids the need for computation of free space nodes and absorbing boundary conditions. The method has been demonstrated by its application to a simple Yagi-Uda antenna where the efficiency over the standard FDTD method is clearly demonstrated