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PHAROS PHased Arrays for Reflector Observing Systems

THE UNIVERSITY OF BIRMINGHAM. PHAROS PHased Arrays for Reflector Observing Systems. Faraday Prototype. Test runs at WSRT repeated in July and October this year Good results on the final run: Full match between simulation and measurements!. Faraday Prototype.

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PHAROS PHased Arrays for Reflector Observing Systems

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  1. THE UNIVERSITY OF BIRMINGHAM PHAROSPHased Arrays for Reflector Observing Systems

  2. Faraday Prototype • Test runs at WSRT repeated in July and October this year • Good results on the final run:Full match between simulation and measurements!

  3. Faraday Prototype • More details reported next week …….

  4. RECAP PHAROS System Parameters • Frequency range 4 - 8 GHz (optimal for 4.0 - 7.0 GHz) • Number of antenna elements 2x (14 x 13) = 364 • Number of beams 4, with 13 elements per beam • Polarisation single • Tsys < 20 K

  5. Cryostat enclosure

  6. Beam-former

  7. Antenna array

  8. Beam-former beam- former power splitters LNAs

  9. Cryostat

  10. Control and calibration

  11. Advanced technology MMIC run • 70nm GaAs mHEMT run executed • Designs from, MECSA/INAF, ASTRON and CSIRO • LNAs, 0.4GHz - - 100GHz • Vectormods, phaseshifter

  12. Summary progress • Antenna array: prototyping completed, to be ordered • MMICs: Produced tested and available • Cryostat: design completed, to be ordered • Waiting for BF finalization • Beamformer: prototyping completed, final design needed • Control and Calibration: principle design done

  13. Summary progress, constraints • UMAN progress on hold for 4 months due to priority shift • UMAN design/production and test of the BF on the critical path due to (too) late start: direct impact on schedule • Delay causes project efficiency problems (€?)

  14. Summary progress, euros • MECSA: completion expected within budget • ASTRON: manhour costs overrun expected • INAF: no budget constraints • UBIR: no budget constraints • TCfA: no budget constraints • UMAN: tbd

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