ISIS TXS S-Band Transmitter

8,500

The ISIS High Data-rate S-band Transmitter is a CubeSat compatible Transmitter designed to meet the needs of high data-rate downlinks of up to 3.4 Mbps (information bit-rate at CCSDS transfer frame level). The transmitter can be used for both TT&C or PDT downlinks. The S-band transmitter is as robust as it is flexible, implementing CCSDS as datalink layer protocol and allowing in-flight configuration of data-rate and RF output power.

Availability: 8-12 weeks

  • Features
  • Performance
  • Product properties
  • Available configuration
  • Testing
  • Documents
  • Operates in EESS/SRS/SOS allocation band
  • CCSDS compliant
  • Data-rate and RF power re-configurable in-flight
  • RF power control loop to maintain constant RF power over the temperature range and Frequency band
  • SFCG Spectral mask compliant (Recommendation: SFCG-21-2R4)
  • Safety watchdog
  • Adjustable RF output power from 27 to 33dBm (0.5dB steps)
  • RF output tolerant to full mismatch
  • Frequency range: 2200-2290 MHz (EESS/SRS/SOS allocations)
  • Transmit power: 27 to 33 dBm
  • Modulation options:
    • Offset Quadrature Phase-shift
    • Keying (OQPSK)
  • Pulse shaping: Square Root Raised Cosine, Roll-off 0.5, 0.35 (other options on request)
  • Channel coding: Concatenated Reed Solomon and Convolutional coding [C(7, ½) and RS (255, 223)]
  • Data rate selectable: 3.4 Mbps ( ½ , ¼ and 1/8 )
  • Data link layer protocol: CCSDS
  • Transmit power:27 to 33dBm
  • Dimensions: 90 x 96 x 33 mm
  • Mass: <300g
  • Supply voltage range: 6,5 – 20 V DC
  • Power consumption: 9,2W
  • Operating temperature: -40 to +60 deg C
  • Interfaces:
    • Data:
      • Housekeeping: I2C, CAN III(optional)
      • Payload: SPI over LVDS (CCSDS IIItransfer frames)
  • Power: 6-20V DC
  • RF output: SMA (50 ohm)
  • Transmitter operating frequency
  • Downlink data rate
  • RF output power
  • RF connector mounting position and orientation
  • I2C and CAN watchdog implementation

Qualification and Acceptance testing

Test QT AT
Functional
Vibration
Mechanical Shock
Thermal Cycling
Thermal Vacuum
Total Ionizing Dose

*QT is performed on the design/qualification model
*AT is performed on the unit to be shipped