Title :
Accurate FDTD modelling of resistively-loaded bow-tie antennas for GPR applications
Author :
Caratelli, Diego ; Yarovoy, Alexander ; Ligthart, Leo P.
Author_Institution :
Int. Res. Centre for Telecommun. & Radar, Delft Univ. of Technol., Delft
Abstract :
In this paper, a cavity-backed bow-tie antenna for ground-penetrating radar is presented. Dielectric embedding and resistive loading of the radiating structure are employed to achieve a 10 :1 relative bandwidth (from 100 MHz to 1 GHz), with a maximum antenna size of 52 cm, and stable performance over different types of the ground. The full-wave analysis of the developed antenna is performed by means of a dedicated locally conformal finite-difference time-domain procedure.
Keywords :
UHF antennas; VHF antennas; antenna radiation patterns; bow-tie antennas; finite difference time-domain analysis; ground penetrating radar; radar antennas; FDTD modelling; GPR applications; antenna radiating structure; bandwidth 100 MHz to 1 GHz; dielectric embedding loading; finite-difference time-domain procedure; full-wave analysis; ground-penetrating radar; resistive loading; resistively-loaded bow-tie antennas; size 52 cm; Bandwidth; Dielectrics; Finite difference methods; Ground penetrating radar; Loaded antennas; Radar antennas; Receiving antennas; Reflector antennas; Time domain analysis; Transmitting antennas;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
