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clc;
close();
clear();
//page no 554
//prob no. 17.6
c=3*10^8; //speed of light in m/s
f=5.925*10^9; //Hz
lembda=c/f; //m
mprintf('The wave length is %.3f cm \n',lembda*100)
theta_3dB=1.6; // beamwidth degree
D=70*lembda/theta_3dB //m
mprintf('The diameter is, D= %.3f m \n',D);
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