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

Volume

44

Issue

12

fYear

2006

Firstpage

3555

Lastpage

3562

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;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/TGRS.2006.881747

Filename

4014328