Full-duplex S-band Transceiver (SRS-3)

The Satlab SRS-3 is a full-duplex, low-power, S-band transceiver designed for TM & TC on micro- and nano-satellites.

The self-contained system operates on the ITU space operations S-band frequencies and features integrated transmit and receive filters, LNA and power amplifier, requiring only passive external antennas.

SRS-3 is highly configurable, with transmit and receive frequencies, bit rates, output power and framing configurations being adjustable on-orbit.

The SRS-3 has demonstrated reliable flight heritage since 2019, with over 100 units successfully delivered to customers around the world for a multitude of space missions. With a TRL of 9, it is fully qualified and operational in its intended environment.

Features

• Variable transmit symbol rate up to 512 kbps

• Variable receive symbol rate up to 128 kbps

• Configurable forward error correction and framing

• Adjustable output power up to 30 dBm with Automatic Level Control (ALC)

• On-board PA, LNA, transmit and receive filters

• CAN-bus and RS-422 interfaces using CubeSat Space Protocol (CSP)

• Ethernet interface with IP routing

• AES-256-GCM link-layer encryption and authentication

• Wide supply voltage range with over-current protection and external watchdog timer

• CubeSat Kit form factor compatible aluminum enclosure

• Delivered with source-level software support library for easy integration

Key Parameters

• Transmitter frequency range: 2200 to 2290 MHz

• Transmitter symbol rate: 9.6 to 512 kBd

• Transmitter power: Adjustable 20 to 30 dBm, with ALC

• Receiver frequency range: 2025 to 2110 MHz

• Receiver symbol rate: 9.6 to 128 kBd

• Receiver sensitivity: -107 dBm (<1% PER, 128 kBd, BT=0.5)

• Modulation: GMSK

• Supply voltage: 5 to 40 V

• Typical power consumption (5 V input, 20℃, 30 dBm):
  Awaiting frames: 550 mW
  Full-duplex transmit and receive: 5.0 W

• Operating temperature:
  RX: -40℃ to +85℃
  TX: -40℃ to +70℃

• Dimensions87.0 × 93.0 × 17.0 mm

• Mass190 g