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The region greater than \(\frac{2D^2}{λ}\) in an antenna with largest dimension D is called _____

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The region greater than \(\frac{2D^2}{λ}\) in an antenna with largest dimension D is called _____

(a) Far field region

(b) Near filed region

(c) Radiative Field

(d) Reactive Field

The question was posed to me in exam.

I would like to ask this question from Near Field and Far Field topic in section Modern Antennas & Antenna Measurements of Antennas

1 Answer

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Best answer
Correct choice is (a) Far field region

Explanation: The characteristics of EM fields vary with distance from the antenna. It is divided into two regions. The region next to the antenna is the near field region and the region Far field region > \(\frac{2D^2}{λ}\).

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