document title / titre du document TRP W ORK PLAN ... - emits - ESA

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TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 TRP Reference: T603-32ET Power/Efficiency flexibility of spaceborne SSPA using Doherty scheme associated to a Title: linearizer The Doherty configuration is an advanced design concept of SSPA which can provide instantaneous flat efficiency for a wide range of input / power range. Very interesting results have been obtained for the base station market where extreme requirements for linearity/power and efficiency are rewarded. This activity is aiming at demonstrating the applicability of this concept to spaceborne applications by using the most advanced semiconductor technologies allowing to focus on very high constant efficiency. The linearity performance in a range of 3 to 6dB of output power flexibility will represent a key point, and linearization schemes will be addressed to assure sufficient performance. Deliverables: RF amplifiers demonstrators. Standard design documentation. Test reports. Associated linearization scheme. Standard design documentation. Test reports. Current TRL: TRL2 Target TRL: TRL3 Application Need/Date: TRL5 by 2010 Application/Mission: Telecom Contract Duration: 18 months SW Clause : - Dossier0 Ref.: T-7825 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: T603-33ET Title: Solid State Isolators based on GaN technology This activity shall first concentrate on identifying ways to develop RF/microwave high power isolators based on solid state semiconductor GaN technology. In a second part, the demonstration of feasibility of isolators for space borne applications will be provided by designing and testing high power isolators aiming at shrinking both size/volume and mass of current ferrite based isolators used in SSPA equipments. Deliverables: Isolator breadboard. Design documentation. Test reports. Current TRL: TRL1 Target TRL: TRL2 Application Need/Date: TRL5 by 2012 Application/Mission: Telecom, EO, Navigation Contract Duration: 24 months SW Clause : - Dossier0 Ref.: T-7742 Consistency with Harmonisation Roadmap and Conclusions: Not directly linked to harmonised technology. Page 161 of 227
TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 TRP Reference: Title: T603-37ET Future Multipurpose TT&C Systems & Techniques The objective of this activity is to investigate, analyse and propose new TT&C Communication Systems looking to the overall end-to-end perspective for a broad range of possible missions (e.g. from Near Earth to Deep Space). The target is to devise a flexible tool-kit of solutions for both the on-board and ground system which can be embedded in highly reconfigurable hardware platform to adapt to the different mission needs. This approach will avoid the use of expensive ad-hoc solutions to cope with the different missions and will be leveraging on the advances in signal processing techniques and technologies. Stemming from the requirements envisaged for future TT&C applications (and for the different application fields: Science, Earth Observation, Navigation and Telecommunication), this activity shall investigate a flexible yet robust solution for TT&C tackling aspects such as: spectrum congestion (interference, spectral efficiency, frequency reuse...), on-board power efficiency (nonlinearity countermeasures), link security, mission adaptability etc.... Deliverables: Analysis of curent/future application scenarios/req. Broad review of possible comm. link + ranging approaches. Identification of ref. scenarios, overall end-to-end perform. analysis + trade-off. Proposed solution benchmarking current approach. Current TRL: - Target TRL: TRL1-2 Application Need/Date: TRL5 by 2015 Application/Mission: All missions Contract Duration: 12 months SW Clause : - Dossier0 Ref.: T-7749 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: T603-39ET Title: Design and Synthesis of a New Class of Receiver Filters With the increasing complexity of satellite payloads there is increased demand of miniaturized high performance receiver filters. This includes waveguide and planar filters. Current synthesis techniques assume close to lossless (high Q) networks which forces the filter to be reflective. If this restriction is removed a new degree of freedom is achieved and very high performance filter transfer functions can be acomplised utilising very low Q resonators. Initial estimations show that the for same size significant improved flatness and selectivity can be achieved over state of the art predistorted topologies. Deliverables: Circuit design tool and breadboard demonstrators Current TRL: TRL1 Target TRL: TRL2 Application Need/Date: TRL6 by 2011 Application/Mission: All missions Contract Duration: 18 months SW Clause : - Dossier0 Ref.: T-7908, T-7918 Consistency with Harmonisation Roadmap and Conclusions: Not directly linked to harmonised technology. Page 162 of 227
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