Which of the following is a valid expression for power gain of an antenna.a)is time average pointing vector andU(andtheta;,) is radiation intensityb)is input power.c)d)is average value of radiation intensity.Correct answer is option 'B'. Can you explain this answer?

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Which of the following is a valid expression for power gain of an antenna.

a)
is time average pointing vector and U(θ,ϕ) is radiation intensity
b)
is input power.
c)
d)
is average value of radiation intensity.

Correct answer is option 'B'. Can you explain this answer?

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Which of the following is a valid expression for power gain of an ante...

Power gain GP(θ,ϕ) is given by

is the expression for directive gain.

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Which of the following is a valid expression for power gain of an antenna.a)is time average pointing vector andU(θ,) is radiation intensityb)is input power.c)d)is average value of radiation intensity.Correct answer is option 'B'. Can you explain this answer?

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