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//Chapter-9 example 4
//=============================================================================
clc;
clear;
//input data
Da = 2;//diameter of parabolic antenna in m
F = 2*10^9;//radar operating frequency in hz
Vo = 3*10^8;//velocity of EM wave in m/s
//Calculations
lamda = Vo/F;//wavelength
Gp = 6.4*(Da/lamda)^2//gain of parabolic reflector
G = 10*log10(Gp)//gain in dB
//Output
mprintf('Gain of parabolic reflector is %3.2f dB',G);
//=============end of the program==============================================
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