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

Chalmers, Signaler och system, Kommunikations- och antennsystem, Antennsystem

Rob Maaskant

Chalmers, Signaler och system, Kommunikations- och antennsystem, Antennsystem

Petrie Meyer

Carlo Bencivenni

Chalmers, Signaler och system, Kommunikations- och antennsystem, 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

Mer information

Skapat

2017-10-07