Figure 15.3 shows a communication system. What is the output power when input signal is of 1.01mW? (gain in dB = 10 log10 (P_o/P_i).

Question

Figure 15.3 shows a communication system. What is the output power when input signal is of 1.01mW? (gain in dB = 10 log10 (P o /P i ).

Philoid · Accepted Answer

Given,

Input power,

Loss suffered in transmission

Gain due to amplifiers =

Total gain =

Let the output power be .

Hence, the output power is .