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

Volume

3

fYear

2003

fDate

22-27 June 2003

Firstpage

632

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1219927

Filename

1219927