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Over the last years, an increasing number of small satellite have been launched for a variety of applications (Earth imaging, in-flight technology demonstration, …). Moreover, there is a large demand of telecommunication solutions for space missions: industry has been showing a special interest in the future commercial applications.
In particular, an increasing number of telecommunication space missions require a miniaturised fixed satellite service (FSS) based on small satellites and able to support radio frequency at K/Ka bands.
This project aimed at filling such a gap, through the realisation of a miniaturised regenerative Transceiver for Low Earth Orbit (LEO) CubeSats communicating with ground stations. The choice of the K/Ka- band frequencies in both uplink and downlink (receiving at 27.6-30.0 GHz; transmitting at 17.8-20.2 GHz) guarantees a high data rate, suitable for DVB-S2 capability.
Challenges focus on the design of a telecommunication transceiver
The key advantages of RADIOSAT are:
RADIOSAT is characterized by:
The system consists of 4 electrical subsystems plus their accommodations. The electrical subsystems are distributed among 6 boards:
To ensure a successful exploitation of RADIOSAT, three additional objectives must be accomplished:
RADIOSAT successfully passed all the Reviews. It targeted all the initially set technical specification goals, which allowed the final output Engineering Model to achieve TRL 6. The project thus has been completed from the Feasibility Study to the Demo.
In order to attain the marketable level of TRL 9, a flight test is required.
Hence, the ongoing activities are focused on a minor redesign aimed at the fulfilment of the planned in-orbit demonstration.