Deployable dipole antenna system

Flight heritage since 2010

Deployable dipole antenna system

€4500 - €5250

The ISIS deployable dipole antenna system contains two or 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 dipole 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

  • Features
  • Performance
  • Product properties
  • Available configurations
  • Documents
  • Applications:
    • CubeSat TT&C
    • CubeSat RF Payloads
  • Linear polarization
  • Deployment confirmation switch per antenna
  • Designed for maximum compatibility with existing COTS CubeSat components
  • Software safe/arm implementation
  • Dual redundant deployment system
  • 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 1-2 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
  • 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
  • Mass: < 100g
  • Operational Temperature Range: -20 to 60°C
  • I2C Interface
  • Other protocole 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)
  • Various RF antenna configurations
    • Single VHF or UHF dipole
    • Dual VHF and/or UHF dipole