Theoretical and experimental results obtained during development of UWB antenna system with deep isolation between the transmitting and receiving modules for ground penetrating radar are discussed. Design features of the antenna are described. It was achieved the following main characteristics of the antenna system: operating frequency band of the radiation and reception of the antenna has a range from 0.8 GHz to 1.6 GHz, the signal attenuation, penetrating directly from the transmitting antenna to the receiver input, not worse - 64.8 dB.