CST – Computer Simulation Technology

A 900MHz Shielded Bow-tie Antenna System for Ground Penetrating Radar
Chen Guo, Richard C. Liu
13th International Conference on Ground Penetrating Radar (GPR), 2010
June 2010
1 - 6
Ultra-Wideband (UWB), Ground-penetrating radar (GPR), back-cavity, bow-tie
A back-cavity shielded bow-tie antenna system working at 900MHz center frequency for ground-coupled GPR application is investigated numerically and experimentally in this paper. Bow-tie geometrical structure is modified for a compact design and back-cavity assembly. A layer of absorber is employed to overcome the back reflection by omni-directional radiation pattern of a bow-tie antenna in H-plane, thus increasing the SNR and improve the isolation between T and R antennas as well. The designed antenna system is applied to a prototype GPR system. Tested data shows that the back-cavity shielded antenna works satisfactorily in the 900MHz GPR system.

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