Describe the antenna subsystem of satellite.

Subject: Advance Communication System

Difficulty: Medium

Marks: 4 marks

1 Answer

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  • The antenna subsystem are complicated mechanical assemblies that are folded into dense packet for launch and must be deployed in large accurately alight assembly during orbit.
  • Antenna receive the uplink signal and transmit the downlink signal .In addition they provide a signal link for satellite telemetry command and ranging system which alone with the attitude control sub system provide tracking signal for precise pointing of antenna towards the earth coverage area.
  • Satellite communication system uses a variety of antenna system. This maybe linear dipole, helix, horn antenna array and parabolic reflector. However, the parabolic reflector is most commonly used antenna as it gives a highly directional symmetric radiation pattern.
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