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//Chapter 24: Space Wave Propagation
//Example 24-9.4
clc;
//Variable Initialization
gain = 10 //Antenna gain (dB)
Wt = 500 //Power radiation (W)
d = 15e3 //Distance (m)
Wr = 2e-6 //Received power (W)
//Calculations
Ae = Wr*(4*%pi*(d**2))/(Wt*gain) //Effective area (m^2)
//Result
mprintf("The effective area of the receiving antenna is %.2f m^2", Ae)
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