A novel low-profile log-periodic ultra wideband feed for the dual-reflector antenna of US-SKA

Author

Olsson, R. ; Kilda, P.-S. ; Weinreb, Sander

Author_Institution

Chalmers Univ. of Technol., Goteborg, Sweden

Volume

3

fYear

2004

fDate

20-25 June 2004

Firstpage

3035

Abstract

We present a novel low-profile log-periodic ultra wideband (UWB) dipole antenna referred to as the Chalmers feed. The simulated results presented show that the antenna has low input reflection coefficient, low cross-polarization, constant beam width and constant phase center position over more than a decade bandwidth. The antenna can be enclosed in a volume of 0.5λ_L, · 0.5λ_L · 0.15λ_L size, where λ_L is the wavelength at the lowest frequency. The ground plane needs to be somewhat larger. The antenna is intended to feed a dual-reflector antenna proposed by the US-SKA consortium.

Keywords

antenna radiation patterns; broadband antennas; dipole antennas; electromagnetic wave polarisation; electromagnetic wave reflection; reflector antenna feeds; Chalmers feed; US-SKA; UWB dipole antenna; constant beam width; constant phase center position; cross-polarization; dual-reflector antenna; ground plane; input reflection coefficient; log-periodic feed; low-profile feed; ultra wideband feed; Antenna feeds; Apertures; Bandwidth; Broadband antennas; Dipole antennas; Distributed parameter circuits; Frequency; Radio astronomy; Ultra wideband antennas; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2004. IEEE

Print_ISBN

0-7803-8302-8

Type

conf

DOI

10.1109/APS.2004.1332018

Filename

1332018