Wideband single pixel feed system over 4.6-24 GHz for the Square Kilometre Array
Paper in proceeding, 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.
Spine-defined profile
Quad-ridge flared horn
Ultra-wideband feed
Sensitivity
Radio astronomy
Author
Jonas Flygare
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Bin Dong
Chinese Academy of Sciences
Jian Yang
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Leif Helldner
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Magnus Dahlgren
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Jin Chengjin
Chinese Academy of Sciences
Miroslav Pantaleev
Chalmers, Space, Earth and Environment, Onsala Space Observatory
Gary Hovey
Chalmers, Space, Earth and Environment, Onsala Space Observatory
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
978-1-7281-0563-5 (ISBN)
21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019
Granada, Spain,
Granada, Spain,
Infrastructure
Onsala Space Observatory
Subject Categories (SSIF 2011)
Communication Systems
Signal Processing
DOI
10.1109/ICEAA.2019.8879392