Give the Friis radio link formula.

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26. Give the Friis radio link formula.

Friis radio link formula


Pr= Received power ( antenna matched) in W

Pt= power in to transmitting antenna in W

Aet= Effective aperture of transmitting antenna, m2

Aer= Effective aperture of Receiving antenna , m2

r=distance between transmitting and receiving antenna , m

λ= wave length, m

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