Radiation resistance of an antenna is 54 Ω and loss resistance is 6 Ω. If antenna has power gain of 10, then directivity is:

1.

Radiation resistance of an antenna is 54 Ω and loss resistance is 6 Ω. If antenna has power gain of 10, then directivity is:

[A].	9
[B].	11.11
[C].	data not sufficient
[D].	10

Answer: Option B

Explanation:

Efficiency of antenna 1-750-18-1

Power gain = 10

Thus directivity 1-750-18-2

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