Question

The reflection coefficient is 0.5. Find the return loss.

(a) 12.12

(b) -12.12

(c) 6.02

(d) -6.02

The question was posed to me in semester exam.

The above asked question is from Power, Power Loss and Return Loss in section EM Wave Propagation of Electromagnetic Theory

Answer 1

Correct option is (c) 6.02

Explanation: The return loss is given by RL = -20log R, where is the reflection coefficient. It is given as 0.5. Thus the return loss will be RL = -20 log 0.5 = 6.02 decibel.