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Space Inflatables > Space Deployable Inflatable Antennas >
3m Ka-Band Reflectarray
Support Structure Design
  • 3.75 meter Horseshoe Shaped Support Frame
    • 25 cm diameter Rigid Composite Roll-up Tubes
      • Material: Graphite Epoxy
    • 25 cm diameter soft Inflatable Tubes
    • All "soft" mitered joints
    • Inflation Pressure of 3 psi
  • 3 Feedhorn Support Columns
  • 40.0 cm diameter (10.0 cm dia. tube) Feedhorn Torus
  • Material: Black Urethane Coated Kevlar
RF Testing
  • Excellent radiation patterns during RF test
  • Beamwidth (0.22°) in the broadside direction
  • Very low average sidelobe level (below -30 dB within ±15°, below -50 dBoutside ±15°)
  • Very low average cross-pol radiation (below -40 dB within ±40°, below -50 dB outside ±40°)
  • The antenna has achieved the required surface flatness (requirement 0.5 mm rms, achieved 0.1 mm rms)
  • Antenna determined to be mechanically feasible at the Ka-band frequency by JPL



For more information on Space Inflatables, please contact Cliff Willey.