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: Title: EEE-006 Novel Techniques For General Antenna Characterisation In The Time Domain Beside frequency domain measurements allowing characterizing the device under test in its operational frequency domain, time domain measurements techniques are well known to provide additional information on the mismatches seen by a signal propagating in a guided circuit. The time domain performances dealing with large frequency bandwidth, this technique provides more qualitative measurements well suited for a diagnostic purpose. This activity deals with time domain measurement techniques to perform fast antenna radiation diagnostic. Time domain allows having in one acquisition a full signature of the antenna behavior which can be compared at different stages of environmental test sequence to identify potential hardware damage. This technique is particularly well suited as time gating allow rejecting parasitic reflections of the radiated signal and make possible measurements in reverberant situation (just before or after a Thermal vacuum test or a vibration test as compared to an ideal situation in an anechoic chamber). Reducing test time and making possible in-situ measurements is of particular relevance for all kind of antennas used for Earth Observation, telecommunication and science. The interest is reinforced when multiple beams are required. The activity will address theoretical aspects together with implementation constraints to end-up with a demonstration phase to be performed on an existing antenna. Deliverables: Technical note on time domain interest for radiative measurements. Test procedure Test report. Evaluation report on time domain for radiative measurements Current TRL: TRL2 Target TRL: TRL3 Application Need/Date: SW operational by 2008 Application/Mission: All missions with complex antennas Contract Duration: 18 months SW Clause : - Dossier0 Ref.: T-52 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: EEE-008 Title: Spacecraft EMI control in the presence of composite materials Traditionally spacecraft construction has relied on metal or metal honeycomb structures that provide good shielding behaviour. The future use of composite materials will not have such performance from an Electro-Magnetic Compatibility (EMC) point of view and the consequences on the EMC performance of the system will have to be carefully evaluated in light of the actual performance of the composite material. The objective of this activity is to provide a characterisation of the shielding performance and the transfer impedance of target materials, develop measurement techniques, and develop necessary analytical tools for EMC performance evaluation. Deliverables: Technical note (characterisation of shielding performance and transfer impedance of target materials; development of measurement techniques). Analytical tools for EMC performance evaluation. Current TRL: TRL1 Target TRL: TRL2-3 Application Need/Date: SW operational by 2008 Application/Mission: All missions with complex antennas Contract Duration: 18 months SW Clause : - Dossier0 Ref.: T-53 Consistency with Harmonisation Roadmap and Conclusions: Page 165 of 227
TRP Work Plan 2005-2007 Description of Activities TEC-SB/7935/dc 12/Feb/09 TRP Reference: ETM-192 / T-M-QCT-06 Design of photonic crystals front-end (Photonic crystals: Material selection and Title: fabrication) Photonic Band Gap technology is a breakthrough, mainly due to their ability to guide and control efficiently electromagnetic waves. As most fundamental components shall be soon available in PBG technology, a fully integrated receiver incorporating antenna, mixer, waveguides, LO injection and filtering in one unit could be developed in order to take full advantage of this technology. True integration of passive and active components can now begin to materialize using PBG technology leading towards the development of a complete system. In parallel, a PBG component in an ideal concept would be fully dynamic, reconfigurable and multifunctional and the association of PBG with other enabling technologies such as MST (Micro-Systems Technologies) and more specifically RF MEMS may allow completely novel EBG concepts and designs. Such a concept is clearly visionary, but the combination of RF MEMS with novel periodic structures such as PBG my allow prototyping (and probably patenting) innovative functional concepts to demonstrate adjustability of electromagnetic crystals. This would represent a fundamental change in the way systems are being designed today. Deliverables: Design documentation. Current TRL: TRL1 Target TRL: TRL1 Application Need/Date: TRL4 by 2012 Application/Mission: Imaging Instruments EO / SCI Contract Duration: 18 months SW Clause : - Dossier0 Ref.: T-47 Consistency with Harmonisation Roadmap and Conclusions: TRP Reference: T603-27EE Title: Secured link for TT&C antennas design phase This activity deals with the design of antennas for secure TT&C links using adaptive (including switching) antenna techniques. The activity shall consider identification of likely threat scenarios, trade-offs of adaptive antenna concepts, architectures and design, ground segment and other infrastructure impacts/requirements, interferer location techniques and adaptive antenna control including software and hardware requirements. The output of this activity shall be the design of the adaptive antenna system(s) together with analyses to investigate the antenna expected performance. Development plan for future hardware development. Deliverables: Adaptive antenna system(s) design and performances analysis. Future HW development plan. Current TRL: TRL1 Target TRL: TRL1-2 Application Need/Date: TRL3 by 2008 Application/Mission: EO, Telecom Contract Duration: 12 months SW Clause : - Dossier0 Ref.: T-7827 Consistency with Harmonisation Roadmap and Conclusions: Page 166 of 227
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