Wideband single pixel feed system over 4.6–24 GHz for the Square Kilometre Array
- Resource Type
- Conference
- Authors
- Flygare, Jonas; Dong, Bin; Yang, Jian; Helldner, Leif; Dahlgren, Magnus; Chengjin, Jin; Pantaleev, Miroslav; Hovey, Gary; Conway, John
- Source
- 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Electromagnetics in Advanced Applications (ICEAA), 2019 International Conference on. :0630-0635 Sep, 2019
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Power, Energy and Industry Applications
Feeds
Apertures
Temperature measurement
Splines (mathematics)
Observatories
Receivers
Sea measurements
quad-ridge flared horn
ultra-wideband feed
spine-defined profile
radio astronomy
sensitivity
- Language
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.