Bi-Axial Antenna Pointing Mechanism


Antenna Pointing Mechanism by Kongsberg (1 more product)

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KARMA-8 FG Image

The KARMA-8 FG from Kongsberg is a Bi-Axial Antenna Pointing Mechanism that has been designed for both LEO data downlink antennas and inter-satellite link antennas. This antenna-pointing mechanism uses a redundant bipolar stepper motor that has a rotational speed capability of 0.5 degrees/sec. It has an operational life of 8.5 years and a cycle life of more than 6000 cycles. The antenna pointing mechanism consists of a Ka-band high-gain antenna  (incl. polarizer) for data downlink with a frequency range of 25.5–27 GHz and an X-band high medium antenna (horn type with polarizer) for TT&C communication with a frequency range of 7.19-8.5 MHz. It features new driveline components giving back-lash-free pointing with high accuracy and is ideal for future science missions. The KARMA-8 FG  has a mass of 22.5 Kg.

Product Specifications

Product Details

  • Part Number
    KARMA-8 FG
  • Manufacturer
  • Description
    Bi-Axial Antenna Pointing Mechanism

General Parameters

  • Space Heritage
  • Mission
    PLATO Mission
  • Frequency
    25.5 to 27 GHz
  • Motor Type
    Redundant Bipolar Stepper Motor
  • Mass
    22.5 Kg
  • Gain
    12.5 to 38.95 dBi
  • Insertion Loss
    1 dB
  • Polarization
    Right Hand Circularly Polarized, Left Hand Circularly Polarized
  • Power Consumption
    12 to 60 W
  • Velocity
    0.5 Degree/sec
  • Return Loss
    27 dB
  • Waveguide Size
    WR-32, WR-42
  • Application
    LEO data downlink antennas and inter-satellite link antennas.

Technical Documents