Nightingale is a fully-integrated Ka-band phased array communication system that provides a complete hardware and software solution for high-speed RF links with dynamically-steerable beams. The system includes a software-defined radio, single-board computer, power converter, RF front-end, and active phased array – all packaged into a thin tile.

The complete-system approach and small form-factor allow for plug and play integration with LEO spacecraft and airborne platforms, while the tile architecture allows for system scaling and adaptation to mission requirements. Per-element array control enables on-orbit optimization of power and beam shape.

Cesium’s approach pushes the envelope to provide a cost-effective phased array solution on aggressive schedules – a key enabler of LEO constellations.


  • 90mm x 90mm x 20mm packaged form-factor

  • Modular architecture: Other frequency ranges available with the same back-end.

  • Multi-beam design

  • Scalable antenna array

  • TDD architecture

  • Conformal mounting options

  • On-orbit reconfigurability for modulation format, encryption, bandwidth, and carrier frequency

  • Post-launch software upgrades supported by fail-safe boot

  • Polarization: RHCP or LHCP

  • Electronic steering to +/- 60 degrees

  • Ruggedized design in an aluminum enclosure

  • Input voltage: 9 to 14V using PCU-1C12 (Other configurations available)

  • Suitable for both military and commercial applications on LEO satellites and airborne platforms

  • Thermal management included

  • Other frequencies in development


  • 1x Multi-Beam Ka-band Antenna Array

  • 1x

  • 1x                                                         (Optional)

  • 1x

  • 1x



Nightingale system shown on a LEO satellite with multiple active phased array tiles. The system is modular and can be configured to your specific needs or frequency requirements.

Active Phased Array Tile


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