Title :
An Investigation of Some Geometrical Shapes and Selection of Shielding and Lumped Resistors of Planar Dipole Antennas for GPR Applications Using FDTD
Author :
Uduwawala, Disala ; Norgren, Martin
Author_Institution :
Div. of Electromagn. Eng., R. Inst. of Technol., Stockholm
Abstract :
A ground-penetrating radar (GPR) antenna system is modeled using the three-dimensional finite-difference time-domain technique. This paper investigates some basic geometrical shapes for planar dipoles to find what shape gives the best performance for GPR applications. The antenna is resistor loaded and shielded by a rectangular conducting cavity to suit the application. The effect of adding a wave-absorbing coat to the shield is also studied. Furthermore, a genetic algorithm is used to optimize the cavity height and the resistor values
Keywords :
dipole antennas; finite difference time-domain analysis; genetic algorithms; ground penetrating radar; radar antennas; 3D finite-difference time-domain technique; FDTD; GPR applications; cavity height; genetic algorithm; ground-penetrating radar antenna system; planar dipole antennas; resistors; wave-absorbing coat; Broadband antennas; Dipole antennas; Finite difference methods; Genetic algorithms; Ground penetrating radar; Radar antennas; Radar detection; Resistors; Shape; Time domain analysis; Absorbing media; buried-object detection; dipole antennas; genetic algorithms;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2006.881747
