Image of Akash Systems - X/S-Band High-Speed LEO Radio on the satsearch marketplace

Key highlights

The X/S-Band High-Speed LEO Radio is a compact, flight-heritage satellite radio system for high-data-rate X-band payload downlink and S-band receive functions in LEO missions. It is suited to smallsat and CubeSat satellite communications where engineers need DVB-S2X modulation, high spectral efficiency, low DC power consumption and a very small radio package. The radio's sub-28 W power consumption and 0.55 kg mass support SWaP-sensitive spacecraft designs, while Akash's Diamond Cooling® and GaN RF heritage aligns with high-efficiency transmit chains that reduce heat load and simplify satellite thermal design.

Applications

LEO / GEO satellites, smallsat high-speed downlinks, CubeSat X-band transmitters, Earth observation payload data downlink, TT&C receive, remote sensing missions, DVB-S2X satellite radio links.

Key features

• Orbit: LEO; flight heritage noted as of January 2025.
• X-band transmit frequency: 8.0-8.4 GHz with 140 MHz bandwidth.
• DVB-S2X modulation from BPSK to 256 APSK; 1-120 MSps symbol rate.
• Transmit data rate: 692 Mbps.
• RF output: 37 dBm Psat; 32 dBm Pout at 64 APSK.
• PAE: 50% at 128 APSK; drain voltage: 28 V.
• S-band receive frequency: 2.025-2.11 GHz; bandwidth: 4-600 kHz.
• S-band receive modulation: FSK NRZ-L; sensitivity: -97 dBm at 10^-6 BER at 100 kbps.
• Data interface: LVDS; TT&C interface: RS-422.
• Mass: 0.55 kg; dimensions: 95 x 95 x 32.1 mm; total DC power: <28 W.

Gallium Nitride (GaN)-on-Diamond MMIC Power Amplifier

Customization

Customization of the product is possible.

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Last updated: 2026-07-09

Akash Systems