A Quadraxial Feed for Ultra-Wide Bandwidth Quadruple-Ridged Flared Horn Antennas
Paper in proceedings, 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

Author

Theunis S. Beukman

Marianna Ivashina

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Rob Maaskant

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

Petrie Meyer

Carlo Bencivenni

Chalmers, Signals and Systems, Communication and Antenna Systems, Antennas

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

2164-3342 (ISSN)

3312 - 3316

Areas of Advance

Information and Communication Technology

Infrastructure

Onsala Space Observatory

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/EuCAP.2014.6902537

ISBN

978-889070184-9

More information

Created

10/7/2017