ARTES-5.1 – ESA Telecom Technology Workplan ... - Emits - ESA

Annex 2Page 39Ref. Activity Title Procurement Policy Budget(KEUR)5C.087(08.153.32)Objective:Description:Planned TenderIssueSSPAs with European GaN devices Open Competitive Tender Type: C 1200 Priority 2 36The activity is to design, manufacture and test two Elegant Breadboards of SSPAs using European GaN devices and operating in different frequency bands.Estimated Duration(months)GaN technology enables SSPAs with significant increases in RF output power and efficiency compared to other semiconductor technologies. The GaN technology is capable of operating athigher temperatures than for example GaAs technology. This may enable new types of application such as direct radiating arrays and reduce the requirements on the thermal control.Simplification of the design and size reduction with higher operational voltage and higher power density leads towards overall cost reduction at equipment level.The scope of the activity is focused on the validation of the GaN technology developed in the framework of the EU GREAT2 initiative and provision of feedback to further enhance thetechnology. The requirements are to be derived on solid-state high power amplifiers for commercial and institutional telecommunication satellites required in mid term future from UHF bandup to Ka-band. On this basis Elegant Breadboards of two SSPAs operating in two different frequency bands (most probably in L and C Bands) with power levels of several tenths of Wattswill be designed, manufactured and tested. The SSPAs shall be implemented using GaN devices coming from the EU GREAT2 initiative, which aims at significantly improving the reliabilityof the European GaN technology,. The SSPA design and develop shall allow for several iterations incorporating new versions of the GaN devices as they become available. Most of thebreadboard effort shall be focused on the optimization of the output stage. The final Elegant Breadboards shall use the devices finally resulting from the GREAT2 initiative.NOTE: This activity has been designated as "Priority 2". Priority 2 activities will only be initiated on the explicit request of at least one delegation.Ref. Activity Title Procurement Policy Budget(KEUR)5C.088(08.153.33)Objective:Description:Planned TenderIssueLow phase noise reference oscillator Open Competitive Tender Type: C 500 2Q 24The activity is to design, manufacture and test an Engineering Model of a compact and low-cost European reference oscillator with low phase noise and high stability.Estimated Duration(months)The current development and implementation of high order and bandwidth-efficient modulation schemes significantly strengthens the phase noise and stability requirements on the localoscillator. At the same time, flexible payloads require some frequency agility of the local oscillators. The introduction of agility in converter equipment implies that complex architectures (e.g.dual conversion scheme) with multiple LO’s will be used. The generation of these LO’s will be using complex frequency synthesis and conversion schemes, using reference oscillators (in the10 to 25MHz range) with very low phase noise and high absolute frequency stability. A thorough trade-off shall be made of various designs considering different technologies for the activeparts and a crystal being used as resonator. Temperature stabilisation and the required control loops shall also be addressed. A preferred design shall be selected. The target is to have withreference oscillator for which the mass and volume performances are improved while improving phase noise performances from about -150 dBc/Hz to -160 dBc/Hz at 1 kHz. offset.An Engineering Model shall be designed, manufactured and tested of a the preferred design meeting the demanding phase noise and stability requirements. The reference oscillator shall useEuropean technology to the maximum extent and shall have a competitive recurrent cost.