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// Example 7.2, page no-262
clear
clc
c=3*10^8 //speed of light
R=10000 //path length
f=4 // operating frequencyin GHz
EIRP=50 //in dB
gr=20 //antenna gain in dB
rp=-120 // received power in dB
//(a)
lamda=c/(f*10^9)
pl=20*log10(4*%pi*R/lamda)
//(b)
Lp=EIRP+gr-rp
printf("(a)\n Operating wavelength = %.3f m\n Path loss(in dB) = %.2f dB",lamda,pl)
printf("\n\n (b)\n Path loss = %.0fdB",Lp)
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