FDTD Analysis of a Novel GPR Antenna

The Ground-Penetrating Radar (GPR) systems usually use broadband electromagnetic pulse, so the antennas must be wideband and can couple electromagnetic energy into the ground. A novel GPR antenna that the dipole with discrete exponential resistive loading is above the image plane is present in this paper. Radiation characteristics of the antenna are researched through the Finite Difference Time Domain (FDTD) method. The results show that the antenna in the paper terminates the reflections at the end of antennas through resistive loading, and it can be applied in GPR systems. Several different modes of employed antennas to influence the coupled signal and the scatter signal are also studied.