Receiver development for Square Kilometer Array, SKA

Purpose and goal

The purpose of the project has been to position Sweden and Omnisys for future high technology procurements within the SKA project. Omnisys, together with the SKA Dish consortium and Onsala Space Observatory, defined specifications and performed system design for the Single Pixel Feed (SPF) Band 1 receiver. Moreover, we have performed detailed design and certain prototyping for the bias and control system, the cryostat and otyer mechanics. All in all, the project has generated valuable knowledge in preparation for future development stages and the coming industrialisation phase.

Expected results and effects

Omnisys efforts in the SKA development have contributed to the high technical maturity of the Band 1 to be provided by Sweden and therefore also to its high priority within SKA. We have also gained important knowledge and capabilities within Omnisys for the remaining development work and future procurement phases. The project has increased the probability for Band 1 to be selected and increased the chances to have a high return of high technology industrial contracts within SKA. However, to further ensure this return, continued development is needed within SPF Band 1 and Wide Band SPF.

Planned approach and implementation

Omnisys has performed several work packages in the Band 1 predevelopment, such as bias and control electronics, design of the cooling system and parts of the RF design. In addition, we participated in work meetings within the Dish consortium with focus on specifications, interfaces and system design. Important decisions have been taken where Omnisys provided input. Most important is the choice of selecting a room temperature receiver for Band 1. This has lead to a reduction of manufacturing cost and allowed for Sweden to take on responsibility also for the Wide Band Single Pixel Feed.