Title :
Compact UWB radiator for short-range GPR applications
Author :
Lestari, A.A. ; Kirana, Y.A. ; Suksmono, A.B. ; Kurniawan, Adit ; Bharata, E. ; Yarovo, A.G. ; Ligthart, L.P.
Author_Institution :
International Research Centre for Telecommunications-transmission and Radar (IRCTR), Delft University of Technology, Delft, The Netherlands
Abstract :
In this paper the design of an UWB antenna for short-range impulse GPR applications is presented. The antenna consists of an UWB radiator and a metallic shielding. The radiator is based on a modified bow-tie antenna that in comparison with conventional bow-tie antennas shows improvement in the form of higher radiation efficiency and reduced dimension. Using resistive loading with certain loading profile, the antenna´s late-time ringing is minimized for allowing detection of shallowly-buried objects. The shielding has a shape of a simple rectangular box. By means of FDTD simulations its dimensions have been optimized to maximize radiation in the broadside direction of the antenna. The radiator and the shielding have been constructed for experimental verifications.
Keywords :
Dipole antennas; Directive antennas; Finite difference methods; Ground penetrating radar; Microwave technology; Radar antennas; Radar applications; Time domain analysis; Transmitting antennas; Ultra wideband antennas; ground penetrating radar antennas; transient antennas; ultra-wideband antennas;
Conference_Titel :
Ground Penetrating Radar, 2004. GPR 2004. Proceedings of the Tenth International Conference on
Conference_Location :
Delft, The Netherlands
Print_ISBN :
90-9017959-3
