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// chapter 7 example 5
//-----------------------------------------------------------------------------
clc;
clear;
// given data
Ptot = 100; // certain antenna radiating power
Ptot_iso = 10*10^3; // isotropic antenna radiating power
// Calculations
D = 10*log10(Ptot_iso/Ptot); // Directivity of antenna
// Output
mprintf('Directivity of antenna = %d dB',D);
//------------------------------------------------------------------------------
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