23rd KA and Broadband Communications Conference

23rd KA and Broadband Communications Conference

QV-LIFT will be presented at the 23rd KA and Broadband Communications Conference that will be held in Trieste, Italy, together with the 35th AIAA International Communications Satellite Systems Conference (ICSSC) on October 16th to 19th.

These conferences care some of the most influential technical conferences on satellite systems and cover the new trends in satellite communication, including the future exploitation of the Q/V frequency bands.

A booth has been booked to give participants the opportunity to discover the QV-LIFT project activities and discuss with the Consortium.

Additionally, 3 papers based on the work of QV-LIFT have been accepted in the Technical Program of the Ka-Conference: their topics range from the advantages provided by the use of Q/V-band for feeder links in future satellites, to the new technologies that are being developed in the project and how they will be validated on the Aldo Paraboni Demonstration Payload.

The first paper with title “Q/V-band feeder links and flexible bandwidth assignment in future very high throughput satellite (VHTS) communication systems” describes part of the activities done in Work Package 2 on the analysis of a generic VHTS mission utilizing Q/V-band feeder links and Ka-band user links, where the use of Smart Gateway techniques is envisaged to enable flexible capacity assignment while optimizing the number of gateways. In particular, soft diversity is used to ensure a soft service degradation in adverse conditions. Performance evaluations in terms of simulation results are provided comparing the system performance for a selected set of diversity strategies. High level considerations for future satellite systems and related user equipment are provided in that context.

N+P Smart GW concept with beam multiplex

The second paper with title “RF Technologies for the Ground Segment of future Q/V band Satellite Systems“ presents the hardware developments which include RF blocks and tracking and pointing systems. As the project is still in its first year, developments are currently at different stages and for this reason the results presented are at varying levels of detail.  However, the paper aims at introducing the reader to the QV-LIFT developments and to underline the high performance required, the challenges that are currently being faced and limits of the technologies available today.

RF building blocks in development

  • V band MMIC amplifier
  • V band power combining SSPA
  • V band BUC (Block Up Converter)
  • Q band LNB (Low Noise Block down converter)
  • Q/V band (RX/TX) antennas for mobile terminals (QV-AT)
  • Q/V band (RX/TX) antenna for fixed station (QV-ES)
  • Tracking and pointing systems for the mobile and fixed antennas

The third paper with title “QV-LIFT Project: Using the Q/V Band Aldo Paraboni Demonstration Payload for Validating Future Satellite Systems” presents how the core technologies for both ground and user segments developed in the course of the project will be tested in a real environment using the Q/V-band Aldo Paraboni Demonstration Payload on Alphasat and its associated ground segment, made available by the Italian Space Agency (ASI).

Test environment with existing assets and new developed components

The targets of the tests are manifold. On one side, the QV-LIFT project aims at demonstrating the planned technology developments for the LNB, BUC and antennas in Q/V-band (Q/V communication validation). On the other, it represents an opportunity to develop and test a set of hub functionalities (Smart Gateway Management System) that come along with the adoption of Q/V-band for the feeder and/or user links (Smart Gateways validation). Expected performances have been assessed through link budget calculations.