Modal-Based Design of a Wideband Quadruple-Ridged Flared Horn Antenna
Journal article, 2016

In this paper, a systematic design technique for quadruple-ridged flared horn antennas is presented, to enhance the radiation properties through the profiling of the ridge taper. The technique relies on control of the cutoff frequencies of specific modes inside the horn, instead of brute-force optimization. This is used to design a prototype antenna as a feed for an offset Gregorian reflector system, such as considered for the Square Kilometer Array (SKA) radio telescope, to achieve an optimized aperture efficiency from 2 to 12 GHz. The antenna is employed with a quadraxial feeding network that allows the excitation of the fundamental TE11 mode, while suppressing all other modes that causes phase errors in the aperture. Measured results confirm the validity of this approach, where good agreement is found with the simulated results.

ridged waveguide

ridged horn

ultra wideband antenna

Reflector antenna feed

Author

T. S. Beukman

Stellenbosch University

P. Meyer

Stellenbosch University

Marianna Ivashina

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

Rob Maaskant

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

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. 64 5 1615-1626 7423692

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/tap.2016.2537363

More information

Created

10/7/2017