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//example 4.2.1
//Calculate the Flux Density and Power received
//Variables
clc
clear
D = 40000
gain = 17 //gain is in dB
Gt = 50
A = 10 //effective area of antenna
Pt = 10 //transmitted power
R = 4*(10)^7
//Calculation
F=(Pt*Gt)/(4*%pi*R^2) //flux density equation
Pr = Pt/A //Received Power
//Result
printf("The flux density is %f Watts per sqm \n",F)
printf("The power received by antenna is %f Watts",Pr)
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