Title :
The dielectric wedge antenna
Author :
Yarovoy, Alexander G. ; Schukin, Alexander D. ; Kaploun, Igor V. ; Ligthart, Leo P.
Author_Institution :
Dept. of Inf. Technol. & Syst., Delft Univ. of Technol., Netherlands
fDate :
10/1/2002 12:00:00 AM
Abstract :
A new modification of the TEM-horn antenna has been developed for ground-penetrating radar (GPR) applications. The antenna is based on a dielectric wedge, and thus, was named the dielectric wedge antenna. Tapering of the metal flairs has been used to match the antenna to the ground and to reduce the late-time ringing. The finite-difference time-domain model of the antenna has been created to investigate physical processes within the antenna and to optimize its performance. The dielectric wedge antenna has shown a superior (in comparison with the TEM-horn) performance by radiation in different types of the ground and has been used in a novel antenna configuration within a GPR system, which is dedicated for landmine detection.
Keywords :
antenna radiation patterns; dielectric-loaded antennas; finite difference time-domain analysis; ground penetrating radar; horn antennas; landmine detection; radar antennas; GPR; TEM-horn antenna; dielectric wedge antenna; finite-difference time-domain model; ground matching; ground-penetrating radar; landmine detection; late-time ringing; performance optimization; radiation; Antenna theory; Dielectrics; Finite difference methods; Ground penetrating radar; Horn antennas; Radar antennas; Reflector antennas; Time domain analysis; Transmitting antennas; Ultra wideband antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.803968
