Title :
Analysis of RC loading profiles for antenna bandwidth improvement
Author :
Lestari, A.A. ; Yarovoy, A.G. ; Ligthart, L.P.
Author_Institution :
Int. Res. Centre for Telecommun.-transmission & Radar, Delft Univ. of Technol., Netherlands
Abstract :
The most-widely used technique for enlarging antenna bandwidth is the application of resistive loading, for which the well-known Wu-King profile can be used to determine the loading distribution along the antenna. However, the disadvantage of resistive loading is that it drops radiation efficiency down to as low as 23%. To deal with this problem the application of capacitive and resistive-capacitive (RC) loading with linear/non-linear loading profiles has been proposed . In this paper, we propose the application of RC loading with linear/constant loading profiles. The aim of this paper is to demonstrate that the proposed loading profiles decrease antenna currents rapidly towards the ends to improve bandwidth.
Keywords :
antenna theory; RC loading profiles; antenna bandwidth improvement; capacitive loading; linear loading profile; loading distribution; nonlinear loading profile; radiation efficiency; resistive loading; resistive-capacitive loading; Antenna accessories; Antenna feeds; Antenna theory; Bandwidth; Current distribution; Dipole antennas; Impedance; Loaded antennas; Radar antennas; Wire;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219927
