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Question 20305
JEE Physics · Hard

Principles of Communication: Satellite Communication MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Satellite CommunicationHardQuestion 20305

Question

The EIRP (Effective Isotropic Radiated Power) of a satellite transmitter is defined as:
  1. A
    P_t / G_t
  2. B
    P_t × G_t
    Correct
  3. C
    P_t + G_t in linear scale
  4. D
    G_t / P_t

Correct answer

P_t × G_t

Explanation

EIRP = Pt × Gt (linear) or EIRP(dBW) = Pt(dBW) + Gt(dBi). It is the power an isotropic radiator would need to produce the same flux density in the direction of maximum gain. Higher EIRP = stronger signal at receiver. Satellite EIRP typically 40–60 dBW.

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