Satellites and subsystems > Communication systems > Software Defined Radios (SDRs) > TOTEM Software Defined Radio (SDR)
Key highlights
The Alén Space TOTEM Software Defined Radio (SDR) is a flight-proven software defined radio system suitable for communication nanosatellites. TOTEM operates in commonly-used nanosatellite frequency bands using Xilinx's Zynq-7020 SoC with embedded Linux and programmable logic. It also includes a wide frequency range transceiver and can be reconfigured in orbit.
Key features
- User-flexible SDR compatible with GNURadio
- High performance SoC - Zynq 7020 with embedded Linux
- 2 x TX and 3 x RX channels
- Multi-application capabilities
- Plugging of different RF Frontends: UHF, VHF and S-Band
- Cross-compatible with other subsystems
- In-orbit reconfiguration
Flight heritage
The system has achieved flight heritage.
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Last updated: 2026-04-27
Technical specs
mass
< 150 g
width
93.30 mm
length
89.30 mm
height
13.61 mm
supply voltage
5 V
transmit power
5 to 7 dBm
transmit frequency
70 MHz to 6 GHz
receive frequency
70 MHz to 6 GHz
RAM
1 GB DDR3L (512 MB with ECC)
NAND flash
1 GB
data interface
UART
I2C
JTAG
Ethernet
CAN
I2C
JTAG
Ethernet
CAN
operating temperature
-40 to 85 C
processor type
Zynq 7000 SoC
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