DocumentCode :
2186867
Title :
GPR antenna simulations and optimizations in time domain
Author :
Ligthart, L.P. ; Yarovoy, A.G. ; Kirana, A.Y.
Author_Institution :
Fac. of Inf. Technol. & Syst., Delft Univ. of Technol., Netherlands
Volume :
1
fYear :
2003
fDate :
9-12 Sept. 2003
Firstpage :
21
Abstract :
The development and optimization of transient antennas for ground penetrating radar would be difficult without numerical simulations of their performance. To this end the FDTD algorithm should be considered as a useful and powerful tool for transient antenna analysis. As an example of such analysis we describe simulations of the dielectric wedge antenna. Good agreement between theoretical predictions and experimental results was observed. Some of the antenna characteristics (like the radial component of the electric field in the near zone, the radiated waveform and the antenna footprint in different grounds) cannot be measured easily, so the correct theoretical (numerical) model is essential for their determination. The numerical model of the antenna can also be used for optimization of the antenna. As an example of such optimization we present a design of the shield for the dielectrically embedded dipole antenna.
Keywords :
antenna radiation patterns; dipole antennas; electric fields; finite difference time-domain analysis; ground penetrating radar; optimisation; radar antennas; transient analysis; GPR antenna simulations; antenna footprint; dielectric wedge antenna; dielectrically embedded dipole antenna; electric field radial component; finite difference time domain algorithm; ground penetrating radar; optimization; transient antenna analysis; waveform radiation; Antenna accessories; Antenna theory; Dielectrics; Dipole antennas; Finite difference methods; Ground penetrating radar; Numerical models; Numerical simulation; Radar antennas; Transient analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antenna Theory and Techniques, 2003. 4th International Conference on
Print_ISBN :
0-7803-7881-4
Type :
conf
DOI :
10.1109/ICATT.2003.1239143
Filename :
1239143
Link To Document :
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