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Radiative and Non Radiative fields are parts of which field region?

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Radiative and Non Radiative fields are parts of which field region?

(a) Near field

(b) Fresnel field

(c) Reactive field

(d) Far field

The question was asked by my school principal while I was bunking the class.

Question is from Near Field and Far Field topic in division Modern Antennas & Antenna Measurements of Antennas

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The correct option is (a) Near field

For explanation: The Near field region is less than \(\frac{2D^2}{λ}\) the Far field region is greater than\(\frac{2D^2}{λ}\). Radiative and reactive field regions are the parts of the near field region.  Reactive region is also known as non- Radiative region and is next to antenna. The Radiative region is also known as Fresnel region.

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