Description
The objective of this activity is to assess the viability of the embedded antenna array with real time adaptive beamforming in small UAV wing structures.
Higher level of integration enabling a high data rate capability for smaller UAVs that are foreseen to be used for civilian applications.
The market for satellite communications for backhaul of UAV payload data is expected to grow considerably in the next years. ESA is already funding a number of technical activities in this area. Although the satcom requirement is obvious for larger UAVs, it is expected that the market for middle sized and smaller UAVs will grow the fastest, as there are fewer regulatory hurdles to overcome. However, a recurring obstacle is the accommodation of any satellite antenna into such smaller sized UAVs. Novel concepts shall therefore be explored and validated, also taking into account the compatibility with future systems such as Inmarsats Ka-band Global Express, or similar multi-spot beam Ka-band systems. An additional requirement is the support of futuredatalinks (possibly in the 5GHz band) for command control of UAVs in civilian airspace.
Although using antenna arrays in the wings of UAVs has been proposed in literature, few concepts take into account the aerodynamic deformation of the wings. This has been shown to have a significant impact of the overall performance of the antenna in terms of beam pointing, beamwidth and sidelobe level.In order to compensate for this, real-time adaptive beamforming is required. This would also allow for beamsteering. Another challenge is the available volume. In order to optimize the available antenna real estate there is a need to tightly integrate the antennawith the mechanical structure of the UAV or use the structural components as radiating elements.
The embedding of phased arrays infuselage panels has many advantages: lighter weight, no access holes, no mounting hardware, improved RF performance, increased component integration, no aerodynamic drag. ARINC 791 develops new standards for Ku and Ka airborne satcom, which require the placement ofadvanced electronics (BFN) inside pressurised aircraftstructures.
In order to optimise performance, some novel antenna concepts would be needed, leading to higher data rates, extended communication range and reduced sensitivity to interference.Furthermore, the weight impact would be minimised.
The activity would comprise:
- Preliminary design
- Critical bread boarding
- Detailed design.-Manufacture of a prototype
- Testing of prototype in realistic environment
Procurement Policy: C(1) = Activity restricted to non-prime contractors (incl. SMEs). For additional information please go to EMITS news "Industrial Policy measures for non-primes, SMEs andRD entities in ESA programmes".
Tender Specifics