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Explain the significance of the term 'effective area of an antenna'. Derive the relationship between effective area and directivity of any antenna.

Mumbai University > Electronics Engineering > Sem 5 > Electromagnetic Engineering

Marks: 10 Marks

Year: May 2015, 2016

1 Answer
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A useful parameter of calculating the received power of an antenna is the effective area or effective aperture(Ae).

The gain is related to effective area by following relationship:

$G=\dfrac{4πA_e}{λ^2}$

And $A_e=k_a.A$

Where,

λ → wave length

$A_e →$ Effective antenna aperture

A → Physical area of antenna

$k_a →$ Antenna …

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