Wideband single pixel feed system over 4.6-24 GHz for the Square Kilometre Array
Paper in proceedings, 2019

We present the Band B feed system over 4.6-24 GHz designed for the Square Kilometre Array (SKA) reflector for radio astronomy applications. The feed is a Quad-ridge Flared Horn (QRFH) with a customized shape based on spline-defined profiles to achieve improved wideband performance. The feed system shows high aperture efficiency and sensitivity on the SKA reflector in predictions based on measured feed beam patterns. We present the feed design overview, cryogenic dewar concept and measurement of receiver noise (10-20 K) with wideband low-noise amplifiers, and full system simulation of the performance.

Quad-ridge flared horn

Radio astronomy

Ultra-wideband feed

Spine-defined profile

Sensitivity

Author

Jonas Flygare

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Electronics Laboratory

Bin Dong

Chinese Academy of Sciences

Jian Yang

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Leif Helldner

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Electronics Laboratory

Magnus Dahlgren

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Electronics Laboratory

Jin Chengjin

Chinese Academy of Sciences

Miroslav Pantaleev

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Electronics Laboratory

Gary Hovey

Chalmers, Space, Earth and Environment, Onsala Space Observatory, Electronics Laboratory

John Conway

Chalmers, Space, Earth and Environment, Onsala Space Observatory

Proceedings of the 2019 21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019

630-635 8879392

21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019
Granada, Spain,

Infrastructure

Onsala Space Observatory

Subject Categories

Communication Systems

Signal Processing

DOI

10.1109/ICEAA.2019.8879392

More information

Latest update

1/4/2020 1