XLink-S - S Band Transceiver SDR

XLink-S is an advanced transceiver system (Software Defined Radio – SDR) for S band communication links of small satellites in LEO environment. The mechanical dimensions fit a 1U CubeSat as well as larger satellites. The radio interface and radio protocol were developed according to standard CCSDS protocols.

Downlink data rates with very high net payload rates of up to 200 Mbps are possible. Supported modulation schemes include BPSK, QPSK and higher order types of modulation with appropriate FEC encoding schemes. Adaptive
modulation and coding schemes (AMC) are applicable to maximize data throughput.

The satellite receiver (uplink) used for telecommand purposes of the satellites is designed for a standard CCSDS BPSK with BCH coding and net data rates of at least 56 kbps. Two separate usable S band uplink receivers are available. Data interface is based on CCSDS transfer frames.

A special feature of the XLink-S transceiver is the optional application of two separate Tx and Rx channels. They can be used either for an increase of the transmit power or for redundancy purposes.


  • Fully featured and transparent bidirectional S band transceiver (SDR)
  • CCSDS compliant for physical and synchronisation layer
  • Flight grade tested design
  • Compact case and low power consumption
  • Extra flat patch antenna design matched to customer specific frequencies
  • Low-cost COTS design
  • Short delivery time
Frequency Range:
2.200 to 2.290 GHz (Tx)
Frequency Range:
2.025 to 2.110 GHz (Rx)
Data Rate:
0.5 to 100 Mbps (Downlink)
Data Rate:
56+ kbps (Uplink)
Power Consumption:
12 W (Tx + Rx)
Power Consumption:
4 W (1 Rx channel)
Supply Voltage:
6 to 18 V
Supply Voltage:
28 V
< 0.2U
200 g