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GATE EC 2016 Set 3 — Question 64

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NAT+2 / -0HardGain, Directivity & Radiation ResistanceAntennasElectromagneticsEffective Aperture

Electromagnetics → Antennas → Effective Aperture

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Question

A radar operating at 5 GHz5\text{ GHz} uses a common antenna for transmission and reception. The antenna has a gain of 150 and is aligned for maximum directional radiation and reception to a target 1 km1\text{ km} away having radar cross-section of 3 m23\text{ m}^2. If it transmits 100 kW100\text{ kW}, then the received power (in μW\mu\text{W}) is __________
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