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Radiosat

K/KA-BAND transponder

Miniaturized non-regenerative transponder designed for cubesat and small satellites for leo and geo applications

Overview

A miniaturized non regenerative bent-pipe transponder designed for CubeSat and Small Satellites for LEO and GEO applications. With a volume of 0.5 U and a mass of 700 g, the transponder operates in K/Ka-band and it is characterized by high performances and low power consumption.

The transponder analog bandwidth can be customized from 400 kHz to 500 MHz. The receiver and transmitter can be tuned independently and the gain can be set in 60 dB range as fixed (FGM) or adaptive with automatic gain control mode (AGC). The transponder offers a versatile CW beacon mode as an option.

Applications

  • LEO small satellite services
  • GEO satellites services

Key features

Frequencies

  • Downlink: 17.8 – 20.2 GHz
  • Uplink: 27.6 – 30.0 GHz

Performance

  • Customizable bandwidth: from 400 kHz to 500 MHz (20 MHz default)
  • RF output power: up to 5 W
  • Receiver noise figure: 3 dB

Interfaces

  • 2.92 mm RF connectors
  • Space qualified data and power connectors
  • Transponder telemetry and control over RS422
  • Additional control over RS232

WORK ENVIRONMENT and TESTING

  • Operating temperature range: -20 °C to +70 °C
  • Non-operating temperature range: -30 °C to +90 °C
  • Vibration and TVAC qualified by ECSS-E-ST-10-03C

POWER SUPPLY

  • Power consumption: < 40 W
  • Input supply: from 12 V to 24 V

Accommodation

  • Mass: 700 g
  • Volume: 93.5 x 114.2 x 45.6 mm

ADDITIONAL FEATURES

  • Fixed Gain Mode (FGM) and Automatic Gain Control mode (AGC) available
  • In-Orbit firmware updating
  • Optional CW beacon function
  • Optional programmable oscillator frequency correction