DocumentCode :
903482
Title :
Numerical and experimental analysis of circular-end wire bow-tie antennas over a lossy ground
Author :
Lestari, Andrian Andaya ; Yarovoy, Alexander G. ; Ligthart, Leo P.
Author_Institution :
Int. Res. Centre for Telecommun.-transmission & Radar, Delft Univ. of Technol., Netherlands
Volume :
52
Issue :
1
fYear :
2004
Firstpage :
26
Lastpage :
35
Abstract :
This paper presents a numerical and experimental analysis of a wire bow-tie antenna situated horizontally near a lossy ground. The antenna is basically an array of identical wire dipoles having a common feed point and equal angular separation between two neighboring wires. This antenna is particularly suitable for ultrawide-band applications as it possesses a wideband property and allows a simple realization of resistive loading. It also provides a possibility to easily vary the antenna flare angle for the purpose of antenna matching or to adjust its footprint. In this work a theoretical model of the antenna is developed and verified experimentally. The wires are modeled as a tape-like structure by triangular patches and the antenna is analyzed using a mixed-potential integral equation formulation. Moreover, time-domain solutions are computed using the Fourier transformation, and a time-window technique is employed to calculate the antenna characteristic impedance. Using the model a comprehensive analysis of the antenna performance is carried out.
Keywords :
Fourier transforms; absorbing media; broadband antennas; dipole antenna arrays; ground penetrating radar; integral equations; time-domain analysis; wire antennas; Fourier transformation; antenna characteristic impedance; antenna flare angle; antenna footprint; antenna matching; circular-end wire bow-tie antennas; common feed point; equal angular separation; ground penetrating radar; identical wire dipole arrays; lossy ground; mixed-potential integral equation formulation; resistive loading realization; tape-like structured wire; time-domain solutions; time-window technique; triangular patches; ultrawide-band applications; Antenna accessories; Antenna arrays; Antenna feeds; Antenna theory; Dipole antennas; Integral equations; Loaded antennas; Time domain analysis; Ultra wideband antennas; Wire;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2003.820959
Filename :
1268296
Link To Document :
بازگشت