Question

Spatial attenuation coefficient is given by ____

(a) (4πd/λ)^2

(b) (4πλ/d)^2

(c) 4πλ/d

(d) 4πd/λ

I had been asked this question during an interview for a job.

I'd like to ask this question from Radio Wave Propagation topic in division Radio Wave Propagation of Antennas

Answer 1

Right answer is (a) (4πd/λ)^2

The best explanation: Spatial attenuation coefficient reflects the decrease in the power density due to the spherical spread of the wave. It is also known as the loss factor. Expression for loss factor is given by Ls=(4πd/λ)^2