Title :
Impedance characterization of dielectric horn antennas using FDTD
Author :
Venkatarayalu, Neelakantam V. ; Chen, Chi-Chih ; Teixeira, Fernando L. ; Lee, Robert
Author_Institution :
Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
In this paper, we perform a detailed study of the input impedance of dielectric horn antennas with a two conical plate transmission line as a launcher, using the finite-difference time-domain (FDTD) method. Dielectric antennas are well known for having properties such as increased directivity, reduced sidelobe level, and wide bandwidth. These properties are particularly attractive for ground penetrating radar (GPR) applications.
Keywords :
antenna radiation patterns; broadband antennas; conical antennas; electric impedance; finite difference time-domain analysis; ground penetrating radar; horn antennas; radar antennas; transmission lines; FDTD; GPR; conical plate transmission line; dielectric horn antennas; directivity; finite-difference time-domain method; ground penetrating radar; input impedance; sidelobe level; wideband antennas; Conductors; Dielectrics; Feeds; Finite difference methods; Horn antennas; Impedance; Time domain analysis; Transmission line antennas; Transmission line theory; Voltage;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2002. IEEE
Print_ISBN :
0-7803-7330-8
DOI :
10.1109/APS.2002.1017026
