A Quadraxial Feed for Ultra-Wide Bandwidth Quadruple-Ridged Flared Horn Antennas
Paper i proceeding, 2014

A quadraxial feed, excited by two orthogonal differential modes, is proposed for ultra wideband quadruple-ridged flared horn (QRFH) antennas that obviates the need for a balun. It is shown that in this configuration the fundamental TE11 mode is most strongly excited over the entire frequency band, while the higher-order modes are significantly suppressed, as compared to the conventional excitation using the ridge-to-coax balun transition. These properties lead to several advantages for QRFH antenna applications which require frequency-invariant beam characteristics, high port isolation and low cross-polarisation level, such as e.g. reflector antenna feeds for future radio telescopes.

Reflector antenna feeds

Ultra wideband antennas

Quadruple-ridged waveguides

Radio astronomy

Författare

Theunis S. Beukman

Marianna Ivashina

Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Rob Maaskant

Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Petrie Meyer

Carlo Bencivenni

Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

8th European Conference on Antennas and Propagation, EuCAP 2014, The Hague, The Netherlands 6-11 April 2014

2164-3342 (ISSN)

3312 - 3316

Styrkeområden

Informations- och kommunikationsteknik

Infrastruktur

Onsala rymdobservatorium

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/EuCAP.2014.6902537

ISBN

978-889070184-9