ISIS Deployable antenna system for 1U/3U CubeSats

Flight heritage since 2010

ISIS Deployable antenna system for 1U/3U CubeSats


The ISIS deployable antenna system for 1U/3U CubeSats contains four tape spring antennas of up to 55 cm length. The deployment system relies on a thermal knife composed of one wire and two redundant heating elements per tape. RF phasing / BalUn circuitry ties the antennas together in a turnstile configuration.

Depending on the configuration, one or two radios in the CubeSat can connect to the antenna system by means of miniature RF connectors. The top face of the antenna system can accommodate a two solar cell solar panel and it can be customized for accommodating sensors or other systems to protrude to the exterior, e.g. camera apertures.

The antenna is compatible with any UHF and/or VHF radio system. It can be mounted on all ISIS CubeSat structures and Pumpkin rev C and rev D CubeSat structures. For custom made structures, which adhere to the CubeSat standard mechanical envelope, mounting should also be possible.

Availability: 8-12 weeks

Sold By : ISISPACE SKU: N/A Category: Tags: ,
  • Features
  • Performance
  • Product properties
  • Available configuration
  • Documents
  • Applications:
    • CubeSat TT&C
    • CubeSat RF Payloads
  • Circular polarization
  • Deployment confirmation switch per antenna
  • Software safe/arm implementation
  • Dual redundant deployment system
  • Designed for maximum compatibility with existing COTS CubeSat components
  • Designed for combination with the ISIS TRXUV and TRXVU VHF/UHF Transceiver
  • Compatible with ISIS products and recent Pumpkin, ClydeSpace and GomSpace products
  • Compliant to CubeSat standard
  • Design based on heritage from the Delfi-C3 satellite (2008)
  • Flight heritage since July 2010 on several missions
  • Rf input/output MMCX, female, 50 Ohm
  • Power Consumption:
    • Nominal: < 40 mW (3V3 model)
    • Nominal: < 60 mW (5V model)
    • During Deployment: 2W
  • Frequency Range: >10MHz useable bandwidth in frequency range specified
  • Max RF Power: 2W
  • Antenna Return Loss at resonance frequency > 10 db (VSWR < 2:1)
  • Deployment Duration: < 3 s above 15°C operating temperature
  • Antenna main beam gain:
    • UHF: 0 dBi
    • VHF: 0 dBi
  • Envelope stowed: (l x w x h) 98 x 98 x 7 [mm3] (supplied aluminium cover plate included)
  • 30 mm diameter centre through-hole for pass-through of payload or other interfaces (for mono/dipole configurations)
  • Mass: < 100g
  • Operational Temperature Range: -20 to 60°C
  • I2C Interface
  • Other protocol on demand
  • Miniature 9 pin OMNETICS connector
  • Supply Voltage 3.3V and 5V available on demand
  • ISIS Solar panel on top
  • ADCS sensor set (sun sensor/temp sensor)
  • RF antenna configurations
    • VHF or UHF turnstile